./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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 18:59:45,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:59:45,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:59:45,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:59:45,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:59:45,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:59:45,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:59:45,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:59:45,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:59:45,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:59:45,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:59:45,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:59:45,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:59:45,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:59:45,767 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:59:45,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:59:45,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:59:45,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:59:45,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:59:45,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:59:45,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:59:45,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:59:45,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:59:45,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:59:45,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:59:45,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:59:45,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:59:45,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:59:45,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:59:45,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:59:45,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:59:45,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:59:45,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:59:45,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:59:45,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:59:45,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:59:45,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:59:45,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:59:45,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:59:45,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:59:45,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:59:45,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:59:45,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:59:45,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:59:45,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:59:46,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:59:46,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:59:46,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:59:46,010 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:59:46,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 18:59:47,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:59:47,407 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:59:47,408 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 18:59:47,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a8fa959/9f1f79a31fbd4c3791a613d6917e3b43/FLAG7cedc5dff [2024-06-27 18:59:47,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a8fa959/9f1f79a31fbd4c3791a613d6917e3b43 [2024-06-27 18:59:47,440 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:59:47,441 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:59:47,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 18:59:47,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:59:47,560 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:59:47,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:59:47,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:59:47,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:59:47,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:59:47" (1/2) ... [2024-06-27 18:59:47,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e79c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:47, skipping insertion in model container [2024-06-27 18:59:47,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:59:47" (1/2) ... [2024-06-27 18:59:47,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1667f6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:59:47, skipping insertion in model container [2024-06-27 18:59:47,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:59:47" (2/2) ... [2024-06-27 18:59:47,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e79c84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:59:47, skipping insertion in model container [2024-06-27 18:59:47,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:59:47" (2/2) ... [2024-06-27 18:59:47,568 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:59:47,627 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:59:47,628 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 || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! 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 18:59:47,628 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 || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! 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 18:59:47,628 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 || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! 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 18:59:47,629 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:59:47,629 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-27 18:59:47,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:59:47,798 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/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-27 18:59:47,971 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:59:47,980 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:59:48,013 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/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:59:48,098 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:59:48,147 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:59:48,147 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:59:48 WrapperNode [2024-06-27 18:59:48,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:59:48,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:59:48,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:59:48,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:59:48,154 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,170 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,196 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2024-06-27 18:59:48,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:59:48,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:59:48,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:59:48,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:59:48,206 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,206 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,209 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,225 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 18:59:48,226 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,226 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,237 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,239 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,240 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,241 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:59:48,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:59:48,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:59:48,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:59:48,245 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 06:59:48" (1/1) ... [2024-06-27 18:59:48,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:59:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:59:48,309 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 18:59:48,328 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 18:59:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:59:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:59:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:59:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:59:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:59:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:59:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:59:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:59:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:59:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:59:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:59:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:59:48,344 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 18:59:48,464 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:59:48,466 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:59:48,792 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:59:48,793 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:59:48,892 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:59:48,892 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:59:48,893 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:59:48 BoogieIcfgContainer [2024-06-27 18:59:48,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:59:48,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:59:48,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:59:48,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:59:48,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:59:47" (1/4) ... [2024-06-27 18:59:48,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7becca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:59:48, skipping insertion in model container [2024-06-27 18:59:48,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:59:47" (2/4) ... [2024-06-27 18:59:48,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7becca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:59:48, skipping insertion in model container [2024-06-27 18:59:48,898 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 06:59:48" (3/4) ... [2024-06-27 18:59:48,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7becca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:59:48, skipping insertion in model container [2024-06-27 18:59:48,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:59:48" (4/4) ... [2024-06-27 18:59:48,900 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 18:59:48,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:59:48,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:59:48,914 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:59:48,956 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:59:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 18:59:49,016 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-27 18:59:49,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:59:49,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-27 18:59:49,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 18:59:49,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 42 transitions, 93 flow [2024-06-27 18:59:49,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:59:49,037 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;@543cd2b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:59:49,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:59:49,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:59:49,041 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:59:49,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:59:49,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:49,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:59:49,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:49,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash 349895316, now seen corresponding path program 1 times [2024-06-27 18:59:49,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:49,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656138538] [2024-06-27 18:59:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:49,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656138538] [2024-06-27 18:59:49,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656138538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:49,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:49,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:59:49,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196816997] [2024-06-27 18:59:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:59:49,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:59:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:59:49,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-27 18:59:49,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:49,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:49,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-27 18:59:49,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:50,642 INFO L124 PetriNetUnfolderBase]: 3513/5611 cut-off events. [2024-06-27 18:59:50,642 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:59:50,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10781 conditions, 5611 events. 3513/5611 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 33964 event pairs, 2751 based on Foata normal form. 176/5345 useless extension candidates. Maximal degree in co-relation 10769. Up to 5066 conditions per place. [2024-06-27 18:59:50,673 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 18:59:50,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 223 flow [2024-06-27 18:59:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:59:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:59:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-27 18:59:50,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-06-27 18:59:50,684 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 93 flow. Second operand 3 states and 91 transitions. [2024-06-27 18:59:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 223 flow [2024-06-27 18:59:50,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:59:50,690 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-27 18:59:50,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 18:59:50,694 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 18:59:50,695 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-27 18:59:50,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:50,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:50,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:59:50,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:59:50,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash 349895541, now seen corresponding path program 1 times [2024-06-27 18:59:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:50,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042363497] [2024-06-27 18:59:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:50,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042363497] [2024-06-27 18:59:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042363497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:50,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:59:50,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233103739] [2024-06-27 18:59:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:50,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:59:50,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:59:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:59:50,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 45 [2024-06-27 18:59:50,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:50,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:50,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 45 [2024-06-27 18:59:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:50,984 INFO L124 PetriNetUnfolderBase]: 891/1706 cut-off events. [2024-06-27 18:59:50,985 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-06-27 18:59:50,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3311 conditions, 1706 events. 891/1706 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11361 event pairs, 577 based on Foata normal form. 0/1567 useless extension candidates. Maximal degree in co-relation 3299. Up to 1152 conditions per place. [2024-06-27 18:59:50,994 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 35 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-06-27 18:59:50,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 228 flow [2024-06-27 18:59:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:59:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:59:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 18:59:50,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2024-06-27 18:59:50,996 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 3 states and 104 transitions. [2024-06-27 18:59:50,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 228 flow [2024-06-27 18:59:50,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:59:50,997 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 118 flow [2024-06-27 18:59:50,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-27 18:59:50,998 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 18:59:50,998 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 118 flow [2024-06-27 18:59:50,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:50,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:50,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:59:50,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:51,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1241996946, now seen corresponding path program 1 times [2024-06-27 18:59:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919806290] [2024-06-27 18:59:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:51,356 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 18:59:51,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:51,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919806290] [2024-06-27 18:59:51,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919806290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:51,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:51,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:59:51,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396798158] [2024-06-27 18:59:51,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:59:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:51,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:59:51,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:59:51,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-27 18:59:51,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 118 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 18:59:51,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:51,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-27 18:59:51,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:51,809 INFO L124 PetriNetUnfolderBase]: 2986/4789 cut-off events. [2024-06-27 18:59:51,809 INFO L125 PetriNetUnfolderBase]: For 1152/1160 co-relation queries the response was YES. [2024-06-27 18:59:51,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10326 conditions, 4789 events. 2986/4789 cut-off events. For 1152/1160 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28355 event pairs, 1953 based on Foata normal form. 6/4642 useless extension candidates. Maximal degree in co-relation 10313. Up to 4299 conditions per place. [2024-06-27 18:59:51,831 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 50 selfloop transitions, 8 changer transitions 2/70 dead transitions. [2024-06-27 18:59:51,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 312 flow [2024-06-27 18:59:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:59:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:59:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-06-27 18:59:51,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-27 18:59:51,833 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 118 flow. Second operand 4 states and 112 transitions. [2024-06-27 18:59:51,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 312 flow [2024-06-27 18:59:51,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:59:51,835 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 179 flow [2024-06-27 18:59:51,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-27 18:59:51,836 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-06-27 18:59:51,836 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 179 flow [2024-06-27 18:59:51,837 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 18:59:51,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:51,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:51,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:59:51,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:51,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -152798767, now seen corresponding path program 1 times [2024-06-27 18:59:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75242730] [2024-06-27 18:59:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:52,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:52,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75242730] [2024-06-27 18:59:52,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75242730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:52,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:59:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634864381] [2024-06-27 18:59:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:52,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:59:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:59:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:59:52,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 18:59:52,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:52,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:52,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 18:59:52,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:52,771 INFO L124 PetriNetUnfolderBase]: 3269/5289 cut-off events. [2024-06-27 18:59:52,771 INFO L125 PetriNetUnfolderBase]: For 2150/2150 co-relation queries the response was YES. [2024-06-27 18:59:52,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12242 conditions, 5289 events. 3269/5289 cut-off events. For 2150/2150 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 31795 event pairs, 1574 based on Foata normal form. 7/5107 useless extension candidates. Maximal degree in co-relation 12227. Up to 4520 conditions per place. [2024-06-27 18:59:52,795 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 77 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-06-27 18:59:52,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 102 transitions, 535 flow [2024-06-27 18:59:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:59:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:59:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-27 18:59:52,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355555555555555 [2024-06-27 18:59:52,798 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 179 flow. Second operand 5 states and 143 transitions. [2024-06-27 18:59:52,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 102 transitions, 535 flow [2024-06-27 18:59:52,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 102 transitions, 518 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:59:52,801 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 299 flow [2024-06-27 18:59:52,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2024-06-27 18:59:52,801 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-06-27 18:59:52,802 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 299 flow [2024-06-27 18:59:52,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:52,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:52,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:52,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:59:52,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:52,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -441792879, now seen corresponding path program 1 times [2024-06-27 18:59:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470942632] [2024-06-27 18:59:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470942632] [2024-06-27 18:59:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470942632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:53,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:59:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605799532] [2024-06-27 18:59:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:53,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:59:53,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:59:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:59:53,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 18:59:53,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:53,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:53,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 18:59:53,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:53,989 INFO L124 PetriNetUnfolderBase]: 3311/5360 cut-off events. [2024-06-27 18:59:53,989 INFO L125 PetriNetUnfolderBase]: For 5422/5424 co-relation queries the response was YES. [2024-06-27 18:59:53,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14781 conditions, 5360 events. 3311/5360 cut-off events. For 5422/5424 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 31944 event pairs, 1496 based on Foata normal form. 7/5175 useless extension candidates. Maximal degree in co-relation 14762. Up to 4479 conditions per place. [2024-06-27 18:59:54,030 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 101 selfloop transitions, 33 changer transitions 0/143 dead transitions. [2024-06-27 18:59:54,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 143 transitions, 899 flow [2024-06-27 18:59:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:59:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:59:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-27 18:59:54,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-06-27 18:59:54,038 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 299 flow. Second operand 6 states and 172 transitions. [2024-06-27 18:59:54,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 143 transitions, 899 flow [2024-06-27 18:59:54,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 891 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:59:54,050 INFO L231 Difference]: Finished difference. Result has 68 places, 93 transitions, 585 flow [2024-06-27 18:59:54,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=68, PETRI_TRANSITIONS=93} [2024-06-27 18:59:54,052 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-27 18:59:54,055 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 93 transitions, 585 flow [2024-06-27 18:59:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:54,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:54,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:59:54,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:54,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash -810675728, now seen corresponding path program 1 times [2024-06-27 18:59:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992510799] [2024-06-27 18:59:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:54,705 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 18:59:54,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992510799] [2024-06-27 18:59:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992510799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:54,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:54,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:59:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771197799] [2024-06-27 18:59:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:54,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:59:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:59:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:59:54,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 18:59:54,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 93 transitions, 585 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:54,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:54,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 18:59:54,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:55,438 INFO L124 PetriNetUnfolderBase]: 3449/5582 cut-off events. [2024-06-27 18:59:55,438 INFO L125 PetriNetUnfolderBase]: For 10839/10845 co-relation queries the response was YES. [2024-06-27 18:59:55,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18165 conditions, 5582 events. 3449/5582 cut-off events. For 10839/10845 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33788 event pairs, 897 based on Foata normal form. 28/5418 useless extension candidates. Maximal degree in co-relation 18140. Up to 4459 conditions per place. [2024-06-27 18:59:55,464 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 111 selfloop transitions, 36 changer transitions 0/156 dead transitions. [2024-06-27 18:59:55,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 156 transitions, 1135 flow [2024-06-27 18:59:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:59:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:59:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-27 18:59:55,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-06-27 18:59:55,466 INFO L175 Difference]: Start difference. First operand has 68 places, 93 transitions, 585 flow. Second operand 7 states and 197 transitions. [2024-06-27 18:59:55,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 156 transitions, 1135 flow [2024-06-27 18:59:55,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 156 transitions, 1125 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-27 18:59:55,475 INFO L231 Difference]: Finished difference. Result has 74 places, 95 transitions, 674 flow [2024-06-27 18:59:55,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=674, PETRI_PLACES=74, PETRI_TRANSITIONS=95} [2024-06-27 18:59:55,476 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-06-27 18:59:55,476 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 95 transitions, 674 flow [2024-06-27 18:59:55,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:55,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:55,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:55,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:59:55,477 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:55,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1852285598, now seen corresponding path program 1 times [2024-06-27 18:59:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016406199] [2024-06-27 18:59:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:55,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016406199] [2024-06-27 18:59:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016406199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:59:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657827040] [2024-06-27 18:59:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:55,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:59:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:59:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:59:55,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 18:59:55,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 95 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:55,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:55,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 18:59:55,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:56,620 INFO L124 PetriNetUnfolderBase]: 3924/6239 cut-off events. [2024-06-27 18:59:56,620 INFO L125 PetriNetUnfolderBase]: For 14801/14801 co-relation queries the response was YES. [2024-06-27 18:59:56,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21516 conditions, 6239 events. 3924/6239 cut-off events. For 14801/14801 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36802 event pairs, 1539 based on Foata normal form. 4/6054 useless extension candidates. Maximal degree in co-relation 21487. Up to 5619 conditions per place. [2024-06-27 18:59:56,654 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 99 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-27 18:59:56,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 1034 flow [2024-06-27 18:59:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:59:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:59:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-27 18:59:56,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-27 18:59:56,656 INFO L175 Difference]: Start difference. First operand has 74 places, 95 transitions, 674 flow. Second operand 5 states and 111 transitions. [2024-06-27 18:59:56,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 1034 flow [2024-06-27 18:59:56,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 953 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:59:56,670 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 735 flow [2024-06-27 18:59:56,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=735, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2024-06-27 18:59:56,671 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-06-27 18:59:56,671 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 735 flow [2024-06-27 18:59:56,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:56,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:56,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:59:56,672 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:56,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1184893310, now seen corresponding path program 1 times [2024-06-27 18:59:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450924241] [2024-06-27 18:59:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:57,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:57,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450924241] [2024-06-27 18:59:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450924241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:57,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:57,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:59:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051227949] [2024-06-27 18:59:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:57,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:59:57,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:59:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:59:57,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 18:59:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 735 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:57,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 18:59:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:57,879 INFO L124 PetriNetUnfolderBase]: 3966/6302 cut-off events. [2024-06-27 18:59:57,879 INFO L125 PetriNetUnfolderBase]: For 17476/17478 co-relation queries the response was YES. [2024-06-27 18:59:57,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22331 conditions, 6302 events. 3966/6302 cut-off events. For 17476/17478 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 37327 event pairs, 1246 based on Foata normal form. 10/6122 useless extension candidates. Maximal degree in co-relation 22299. Up to 5467 conditions per place. [2024-06-27 18:59:57,913 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 109 selfloop transitions, 30 changer transitions 0/146 dead transitions. [2024-06-27 18:59:57,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 146 transitions, 1194 flow [2024-06-27 18:59:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:59:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:59:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:59:57,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 18:59:57,914 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 735 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:59:57,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 146 transitions, 1194 flow [2024-06-27 18:59:57,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 146 transitions, 1182 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 18:59:57,929 INFO L231 Difference]: Finished difference. Result has 81 places, 111 transitions, 877 flow [2024-06-27 18:59:57,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=81, PETRI_TRANSITIONS=111} [2024-06-27 18:59:57,929 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-06-27 18:59:57,930 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 111 transitions, 877 flow [2024-06-27 18:59:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:57,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:57,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:57,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:59:57,930 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:57,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1929970016, now seen corresponding path program 2 times [2024-06-27 18:59:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:57,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353480134] [2024-06-27 18:59:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353480134] [2024-06-27 18:59:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353480134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:58,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:58,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:59:58,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001317727] [2024-06-27 18:59:58,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:58,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:59:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:59:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:59:58,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 18:59:58,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 111 transitions, 877 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:58,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:58,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 18:59:58,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:59,121 INFO L124 PetriNetUnfolderBase]: 3943/6269 cut-off events. [2024-06-27 18:59:59,122 INFO L125 PetriNetUnfolderBase]: For 19289/19289 co-relation queries the response was YES. [2024-06-27 18:59:59,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22778 conditions, 6269 events. 3943/6269 cut-off events. For 19289/19289 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 36943 event pairs, 1518 based on Foata normal form. 4/6081 useless extension candidates. Maximal degree in co-relation 22742. Up to 5633 conditions per place. [2024-06-27 18:59:59,166 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 115 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-27 18:59:59,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 1227 flow [2024-06-27 18:59:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:59:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:59:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-27 18:59:59,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 18:59:59,168 INFO L175 Difference]: Start difference. First operand has 81 places, 111 transitions, 877 flow. Second operand 6 states and 129 transitions. [2024-06-27 18:59:59,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 1227 flow [2024-06-27 18:59:59,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 138 transitions, 1189 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:59:59,185 INFO L231 Difference]: Finished difference. Result has 84 places, 113 transitions, 907 flow [2024-06-27 18:59:59,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=907, PETRI_PLACES=84, PETRI_TRANSITIONS=113} [2024-06-27 18:59:59,186 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 33 predicate places. [2024-06-27 18:59:59,187 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 113 transitions, 907 flow [2024-06-27 18:59:59,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:59,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:59,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:59,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:59:59,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:59,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1191538687, now seen corresponding path program 1 times [2024-06-27 18:59:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165959365] [2024-06-27 18:59:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:59,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165959365] [2024-06-27 18:59:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165959365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:59,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:59,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:59:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460302702] [2024-06-27 18:59:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:59:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:59:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:00,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:00,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 113 transitions, 907 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:00,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:00,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:00,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:00,909 INFO L124 PetriNetUnfolderBase]: 3935/6257 cut-off events. [2024-06-27 19:00:00,910 INFO L125 PetriNetUnfolderBase]: For 20676/20676 co-relation queries the response was YES. [2024-06-27 19:00:00,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22823 conditions, 6257 events. 3935/6257 cut-off events. For 20676/20676 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 36861 event pairs, 1470 based on Foata normal form. 4/6069 useless extension candidates. Maximal degree in co-relation 22786. Up to 5590 conditions per place. [2024-06-27 19:00:00,944 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 118 selfloop transitions, 20 changer transitions 0/145 dead transitions. [2024-06-27 19:00:00,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1288 flow [2024-06-27 19:00:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 19:00:00,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-27 19:00:00,946 INFO L175 Difference]: Start difference. First operand has 84 places, 113 transitions, 907 flow. Second operand 6 states and 133 transitions. [2024-06-27 19:00:00,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1288 flow [2024-06-27 19:00:00,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 1255 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:00,962 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 946 flow [2024-06-27 19:00:00,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=946, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2024-06-27 19:00:00,963 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-06-27 19:00:00,963 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 946 flow [2024-06-27 19:00:00,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:00,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:00,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:00:00,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:00,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1717015007, now seen corresponding path program 1 times [2024-06-27 19:00:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346612414] [2024-06-27 19:00:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:01,624 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 19:00:01,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346612414] [2024-06-27 19:00:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346612414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:01,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:01,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:01,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737250608] [2024-06-27 19:00:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:01,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:01,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:01,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:01,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:01,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 946 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:01,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:01,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:01,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:02,507 INFO L124 PetriNetUnfolderBase]: 3946/6278 cut-off events. [2024-06-27 19:00:02,507 INFO L125 PetriNetUnfolderBase]: For 23458/23458 co-relation queries the response was YES. [2024-06-27 19:00:02,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23439 conditions, 6278 events. 3946/6278 cut-off events. For 23458/23458 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 37098 event pairs, 1519 based on Foata normal form. 2/6086 useless extension candidates. Maximal degree in co-relation 23401. Up to 5581 conditions per place. [2024-06-27 19:00:02,548 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 114 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-27 19:00:02,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 1372 flow [2024-06-27 19:00:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 19:00:02,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-06-27 19:00:02,550 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 946 flow. Second operand 6 states and 134 transitions. [2024-06-27 19:00:02,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 1372 flow [2024-06-27 19:00:02,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 151 transitions, 1326 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:02,571 INFO L231 Difference]: Finished difference. Result has 89 places, 121 transitions, 1043 flow [2024-06-27 19:00:02,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1043, PETRI_PLACES=89, PETRI_TRANSITIONS=121} [2024-06-27 19:00:02,572 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-27 19:00:02,572 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 121 transitions, 1043 flow [2024-06-27 19:00:02,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:02,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:02,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:02,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:00:02,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:02,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash -468287087, now seen corresponding path program 1 times [2024-06-27 19:00:02,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:02,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300428794] [2024-06-27 19:00:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:03,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300428794] [2024-06-27 19:00:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300428794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:03,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:03,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:03,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472147287] [2024-06-27 19:00:03,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:03,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:03,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:03,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:03,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 121 transitions, 1043 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:03,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:03,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:03,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:04,070 INFO L124 PetriNetUnfolderBase]: 3994/6340 cut-off events. [2024-06-27 19:00:04,071 INFO L125 PetriNetUnfolderBase]: For 27616/27618 co-relation queries the response was YES. [2024-06-27 19:00:04,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24613 conditions, 6340 events. 3994/6340 cut-off events. For 27616/27618 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 37726 event pairs, 1158 based on Foata normal form. 6/6154 useless extension candidates. Maximal degree in co-relation 24574. Up to 5385 conditions per place. [2024-06-27 19:00:04,107 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 136 selfloop transitions, 45 changer transitions 0/188 dead transitions. [2024-06-27 19:00:04,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 188 transitions, 1667 flow [2024-06-27 19:00:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 19:00:04,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 19:00:04,109 INFO L175 Difference]: Start difference. First operand has 89 places, 121 transitions, 1043 flow. Second operand 8 states and 189 transitions. [2024-06-27 19:00:04,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 188 transitions, 1667 flow [2024-06-27 19:00:04,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 188 transitions, 1610 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:04,135 INFO L231 Difference]: Finished difference. Result has 94 places, 134 transitions, 1224 flow [2024-06-27 19:00:04,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1224, PETRI_PLACES=94, PETRI_TRANSITIONS=134} [2024-06-27 19:00:04,136 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2024-06-27 19:00:04,136 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 134 transitions, 1224 flow [2024-06-27 19:00:04,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:04,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:04,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:04,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:00:04,137 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:04,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:04,137 INFO L85 PathProgramCache]: Analyzing trace with hash -464471855, now seen corresponding path program 1 times [2024-06-27 19:00:04,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:04,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452983342] [2024-06-27 19:00:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:04,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452983342] [2024-06-27 19:00:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452983342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:04,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:04,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396194180] [2024-06-27 19:00:04,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:04,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:05,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:05,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 134 transitions, 1224 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:05,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:05,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:05,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:05,888 INFO L124 PetriNetUnfolderBase]: 4078/6488 cut-off events. [2024-06-27 19:00:05,889 INFO L125 PetriNetUnfolderBase]: For 35275/35277 co-relation queries the response was YES. [2024-06-27 19:00:05,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26854 conditions, 6488 events. 4078/6488 cut-off events. For 35275/35277 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 38779 event pairs, 1178 based on Foata normal form. 10/6298 useless extension candidates. Maximal degree in co-relation 26813. Up to 5559 conditions per place. [2024-06-27 19:00:05,931 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 138 selfloop transitions, 35 changer transitions 0/180 dead transitions. [2024-06-27 19:00:05,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 180 transitions, 1731 flow [2024-06-27 19:00:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 19:00:05,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 19:00:05,949 INFO L175 Difference]: Start difference. First operand has 94 places, 134 transitions, 1224 flow. Second operand 7 states and 162 transitions. [2024-06-27 19:00:05,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 180 transitions, 1731 flow [2024-06-27 19:00:06,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 180 transitions, 1639 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:06,002 INFO L231 Difference]: Finished difference. Result has 97 places, 137 transitions, 1249 flow [2024-06-27 19:00:06,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1249, PETRI_PLACES=97, PETRI_TRANSITIONS=137} [2024-06-27 19:00:06,003 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 46 predicate places. [2024-06-27 19:00:06,003 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 137 transitions, 1249 flow [2024-06-27 19:00:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:06,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:06,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:00:06,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 724724511, now seen corresponding path program 2 times [2024-06-27 19:00:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285188476] [2024-06-27 19:00:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:06,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:06,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285188476] [2024-06-27 19:00:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285188476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:06,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196020304] [2024-06-27 19:00:06,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:06,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:06,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:06,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 137 transitions, 1249 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:06,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:06,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:06,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:07,661 INFO L124 PetriNetUnfolderBase]: 4120/6545 cut-off events. [2024-06-27 19:00:07,661 INFO L125 PetriNetUnfolderBase]: For 39909/39909 co-relation queries the response was YES. [2024-06-27 19:00:07,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28092 conditions, 6545 events. 4120/6545 cut-off events. For 39909/39909 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38920 event pairs, 1487 based on Foata normal form. 4/6350 useless extension candidates. Maximal degree in co-relation 28049. Up to 5850 conditions per place. [2024-06-27 19:00:07,703 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 149 selfloop transitions, 18 changer transitions 0/174 dead transitions. [2024-06-27 19:00:07,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 174 transitions, 1712 flow [2024-06-27 19:00:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 19:00:07,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-27 19:00:07,705 INFO L175 Difference]: Start difference. First operand has 97 places, 137 transitions, 1249 flow. Second operand 7 states and 151 transitions. [2024-06-27 19:00:07,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 174 transitions, 1712 flow [2024-06-27 19:00:07,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 1627 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:07,753 INFO L231 Difference]: Finished difference. Result has 99 places, 139 transitions, 1242 flow [2024-06-27 19:00:07,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1242, PETRI_PLACES=99, PETRI_TRANSITIONS=139} [2024-06-27 19:00:07,753 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-27 19:00:07,754 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 139 transitions, 1242 flow [2024-06-27 19:00:07,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:07,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:07,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:07,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:00:07,754 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:07,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1687856664, now seen corresponding path program 1 times [2024-06-27 19:00:07,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:07,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557993217] [2024-06-27 19:00:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:07,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:08,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557993217] [2024-06-27 19:00:08,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557993217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:08,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:08,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334440396] [2024-06-27 19:00:08,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:08,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:08,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:08,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:08,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 139 transitions, 1242 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:08,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:08,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:08,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:09,238 INFO L124 PetriNetUnfolderBase]: 4110/6538 cut-off events. [2024-06-27 19:00:09,238 INFO L125 PetriNetUnfolderBase]: For 42938/42947 co-relation queries the response was YES. [2024-06-27 19:00:09,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28175 conditions, 6538 events. 4110/6538 cut-off events. For 42938/42947 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39066 event pairs, 1190 based on Foata normal form. 8/6342 useless extension candidates. Maximal degree in co-relation 28131. Up to 5553 conditions per place. [2024-06-27 19:00:09,279 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 113 selfloop transitions, 64 changer transitions 0/184 dead transitions. [2024-06-27 19:00:09,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 184 transitions, 1824 flow [2024-06-27 19:00:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 19:00:09,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 19:00:09,280 INFO L175 Difference]: Start difference. First operand has 99 places, 139 transitions, 1242 flow. Second operand 6 states and 145 transitions. [2024-06-27 19:00:09,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 184 transitions, 1824 flow [2024-06-27 19:00:09,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 184 transitions, 1766 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:09,341 INFO L231 Difference]: Finished difference. Result has 101 places, 147 transitions, 1504 flow [2024-06-27 19:00:09,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1504, PETRI_PLACES=101, PETRI_TRANSITIONS=147} [2024-06-27 19:00:09,341 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2024-06-27 19:00:09,341 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 147 transitions, 1504 flow [2024-06-27 19:00:09,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:09,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:09,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:09,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:00:09,342 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:09,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash 732969891, now seen corresponding path program 3 times [2024-06-27 19:00:09,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:09,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115315255] [2024-06-27 19:00:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:10,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115315255] [2024-06-27 19:00:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115315255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:10,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374386972] [2024-06-27 19:00:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:10,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:10,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:10,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:10,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 147 transitions, 1504 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:10,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:10,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:10,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:11,041 INFO L124 PetriNetUnfolderBase]: 4152/6593 cut-off events. [2024-06-27 19:00:11,041 INFO L125 PetriNetUnfolderBase]: For 53659/53659 co-relation queries the response was YES. [2024-06-27 19:00:11,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30293 conditions, 6593 events. 4152/6593 cut-off events. For 53659/53659 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39139 event pairs, 1495 based on Foata normal form. 4/6394 useless extension candidates. Maximal degree in co-relation 30247. Up to 5793 conditions per place. [2024-06-27 19:00:11,086 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 148 selfloop transitions, 34 changer transitions 0/189 dead transitions. [2024-06-27 19:00:11,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 189 transitions, 2024 flow [2024-06-27 19:00:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 19:00:11,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-27 19:00:11,087 INFO L175 Difference]: Start difference. First operand has 101 places, 147 transitions, 1504 flow. Second operand 7 states and 156 transitions. [2024-06-27 19:00:11,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 189 transitions, 2024 flow [2024-06-27 19:00:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 189 transitions, 1932 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:11,173 INFO L231 Difference]: Finished difference. Result has 105 places, 149 transitions, 1534 flow [2024-06-27 19:00:11,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1534, PETRI_PLACES=105, PETRI_TRANSITIONS=149} [2024-06-27 19:00:11,174 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-27 19:00:11,174 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 149 transitions, 1534 flow [2024-06-27 19:00:11,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:11,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:11,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:11,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:00:11,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:11,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1687560707, now seen corresponding path program 4 times [2024-06-27 19:00:11,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:11,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422647724] [2024-06-27 19:00:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:11,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422647724] [2024-06-27 19:00:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422647724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:11,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:11,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:11,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387988059] [2024-06-27 19:00:11,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:11,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:12,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:12,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 149 transitions, 1534 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:12,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:12,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:12,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:12,846 INFO L124 PetriNetUnfolderBase]: 4170/6619 cut-off events. [2024-06-27 19:00:12,846 INFO L125 PetriNetUnfolderBase]: For 50297/50297 co-relation queries the response was YES. [2024-06-27 19:00:12,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29987 conditions, 6619 events. 4170/6619 cut-off events. For 50297/50297 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 39254 event pairs, 1435 based on Foata normal form. 4/6420 useless extension candidates. Maximal degree in co-relation 29940. Up to 5875 conditions per place. [2024-06-27 19:00:12,886 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 162 selfloop transitions, 24 changer transitions 0/193 dead transitions. [2024-06-27 19:00:12,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 193 transitions, 2077 flow [2024-06-27 19:00:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 19:00:12,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-27 19:00:12,888 INFO L175 Difference]: Start difference. First operand has 105 places, 149 transitions, 1534 flow. Second operand 7 states and 155 transitions. [2024-06-27 19:00:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 193 transitions, 2077 flow [2024-06-27 19:00:12,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 193 transitions, 1983 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:12,947 INFO L231 Difference]: Finished difference. Result has 108 places, 155 transitions, 1579 flow [2024-06-27 19:00:12,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1579, PETRI_PLACES=108, PETRI_TRANSITIONS=155} [2024-06-27 19:00:12,948 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 57 predicate places. [2024-06-27 19:00:12,948 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 155 transitions, 1579 flow [2024-06-27 19:00:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:12,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:12,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:00:12,949 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:12,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2083952760, now seen corresponding path program 1 times [2024-06-27 19:00:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:12,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637251207] [2024-06-27 19:00:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:13,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637251207] [2024-06-27 19:00:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637251207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:13,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:13,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:13,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098505707] [2024-06-27 19:00:13,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:13,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:13,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:13,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:13,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:13,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:13,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 155 transitions, 1579 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:13,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:13,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:13,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:14,174 INFO L124 PetriNetUnfolderBase]: 4164/6609 cut-off events. [2024-06-27 19:00:14,174 INFO L125 PetriNetUnfolderBase]: For 49438/49438 co-relation queries the response was YES. [2024-06-27 19:00:14,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30115 conditions, 6609 events. 4164/6609 cut-off events. For 49438/49438 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 39155 event pairs, 1494 based on Foata normal form. 2/6409 useless extension candidates. Maximal degree in co-relation 30066. Up to 5962 conditions per place. [2024-06-27 19:00:14,214 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 154 selfloop transitions, 18 changer transitions 0/179 dead transitions. [2024-06-27 19:00:14,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 179 transitions, 2050 flow [2024-06-27 19:00:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:00:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:00:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-27 19:00:14,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-06-27 19:00:14,216 INFO L175 Difference]: Start difference. First operand has 108 places, 155 transitions, 1579 flow. Second operand 5 states and 106 transitions. [2024-06-27 19:00:14,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 179 transitions, 2050 flow [2024-06-27 19:00:14,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1967 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:14,283 INFO L231 Difference]: Finished difference. Result has 110 places, 165 transitions, 1660 flow [2024-06-27 19:00:14,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1660, PETRI_PLACES=110, PETRI_TRANSITIONS=165} [2024-06-27 19:00:14,283 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 59 predicate places. [2024-06-27 19:00:14,283 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 165 transitions, 1660 flow [2024-06-27 19:00:14,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:14,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:14,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:00:14,284 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:14,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1296760728, now seen corresponding path program 1 times [2024-06-27 19:00:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:14,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103454099] [2024-06-27 19:00:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:15,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103454099] [2024-06-27 19:00:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103454099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:15,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:15,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595313025] [2024-06-27 19:00:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:15,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:15,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:15,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:15,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 165 transitions, 1660 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:15,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:15,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:15,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:16,016 INFO L124 PetriNetUnfolderBase]: 4676/7379 cut-off events. [2024-06-27 19:00:16,016 INFO L125 PetriNetUnfolderBase]: For 63913/63915 co-relation queries the response was YES. [2024-06-27 19:00:16,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34903 conditions, 7379 events. 4676/7379 cut-off events. For 63913/63915 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 44466 event pairs, 798 based on Foata normal form. 18/7200 useless extension candidates. Maximal degree in co-relation 34852. Up to 5453 conditions per place. [2024-06-27 19:00:16,062 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 186 selfloop transitions, 48 changer transitions 0/241 dead transitions. [2024-06-27 19:00:16,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 241 transitions, 2540 flow [2024-06-27 19:00:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:00:16,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-27 19:00:16,063 INFO L175 Difference]: Start difference. First operand has 110 places, 165 transitions, 1660 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:00:16,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 241 transitions, 2540 flow [2024-06-27 19:00:16,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 241 transitions, 2504 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 19:00:16,131 INFO L231 Difference]: Finished difference. Result has 118 places, 175 transitions, 1886 flow [2024-06-27 19:00:16,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1886, PETRI_PLACES=118, PETRI_TRANSITIONS=175} [2024-06-27 19:00:16,131 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 67 predicate places. [2024-06-27 19:00:16,132 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 175 transitions, 1886 flow [2024-06-27 19:00:16,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:16,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:16,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:16,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:00:16,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:16,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1296700278, now seen corresponding path program 2 times [2024-06-27 19:00:16,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:16,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560330324] [2024-06-27 19:00:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560330324] [2024-06-27 19:00:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560330324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464270238] [2024-06-27 19:00:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:16,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:16,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 175 transitions, 1886 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:16,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:16,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:16,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:17,936 INFO L124 PetriNetUnfolderBase]: 4782/7587 cut-off events. [2024-06-27 19:00:17,936 INFO L125 PetriNetUnfolderBase]: For 74748/74750 co-relation queries the response was YES. [2024-06-27 19:00:17,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37392 conditions, 7587 events. 4782/7587 cut-off events. For 74748/74750 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 46361 event pairs, 1257 based on Foata normal form. 22/7398 useless extension candidates. Maximal degree in co-relation 37337. Up to 6243 conditions per place. [2024-06-27 19:00:17,989 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 190 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-27 19:00:17,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 246 transitions, 2631 flow [2024-06-27 19:00:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:00:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:00:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 19:00:18,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 19:00:18,009 INFO L175 Difference]: Start difference. First operand has 118 places, 175 transitions, 1886 flow. Second operand 9 states and 216 transitions. [2024-06-27 19:00:18,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 246 transitions, 2631 flow [2024-06-27 19:00:18,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 246 transitions, 2564 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:18,149 INFO L231 Difference]: Finished difference. Result has 123 places, 178 transitions, 1979 flow [2024-06-27 19:00:18,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1979, PETRI_PLACES=123, PETRI_TRANSITIONS=178} [2024-06-27 19:00:18,150 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 72 predicate places. [2024-06-27 19:00:18,150 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 178 transitions, 1979 flow [2024-06-27 19:00:18,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:18,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:18,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:00:18,151 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:18,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1178434658, now seen corresponding path program 1 times [2024-06-27 19:00:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104263993] [2024-06-27 19:00:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:18,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104263993] [2024-06-27 19:00:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104263993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:18,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:18,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:18,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615452536] [2024-06-27 19:00:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:18,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:18,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:18,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 178 transitions, 1979 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:18,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:18,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:18,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:19,986 INFO L124 PetriNetUnfolderBase]: 4832/7712 cut-off events. [2024-06-27 19:00:19,986 INFO L125 PetriNetUnfolderBase]: For 77068/77070 co-relation queries the response was YES. [2024-06-27 19:00:20,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38429 conditions, 7712 events. 4832/7712 cut-off events. For 77068/77070 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 47624 event pairs, 1351 based on Foata normal form. 6/7490 useless extension candidates. Maximal degree in co-relation 38372. Up to 6733 conditions per place. [2024-06-27 19:00:20,047 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 181 selfloop transitions, 38 changer transitions 0/226 dead transitions. [2024-06-27 19:00:20,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 226 transitions, 2623 flow [2024-06-27 19:00:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 19:00:20,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206349206349207 [2024-06-27 19:00:20,049 INFO L175 Difference]: Start difference. First operand has 123 places, 178 transitions, 1979 flow. Second operand 7 states and 164 transitions. [2024-06-27 19:00:20,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 226 transitions, 2623 flow [2024-06-27 19:00:20,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 226 transitions, 2519 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:00:20,285 INFO L231 Difference]: Finished difference. Result has 123 places, 181 transitions, 2027 flow [2024-06-27 19:00:20,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2027, PETRI_PLACES=123, PETRI_TRANSITIONS=181} [2024-06-27 19:00:20,286 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 72 predicate places. [2024-06-27 19:00:20,286 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 181 transitions, 2027 flow [2024-06-27 19:00:20,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:20,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:20,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:00:20,286 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:20,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1178428148, now seen corresponding path program 2 times [2024-06-27 19:00:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:20,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418586875] [2024-06-27 19:00:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:20,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:21,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418586875] [2024-06-27 19:00:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418586875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:21,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:21,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36478516] [2024-06-27 19:00:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:21,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:21,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:21,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 181 transitions, 2027 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:21,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:21,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:21,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:22,161 INFO L124 PetriNetUnfolderBase]: 4832/7694 cut-off events. [2024-06-27 19:00:22,161 INFO L125 PetriNetUnfolderBase]: For 80145/80147 co-relation queries the response was YES. [2024-06-27 19:00:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38524 conditions, 7694 events. 4832/7694 cut-off events. For 80145/80147 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 47406 event pairs, 1341 based on Foata normal form. 6/7478 useless extension candidates. Maximal degree in co-relation 38466. Up to 6527 conditions per place. [2024-06-27 19:00:22,213 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 180 selfloop transitions, 41 changer transitions 0/228 dead transitions. [2024-06-27 19:00:22,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 228 transitions, 2697 flow [2024-06-27 19:00:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 19:00:22,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-27 19:00:22,215 INFO L175 Difference]: Start difference. First operand has 123 places, 181 transitions, 2027 flow. Second operand 7 states and 160 transitions. [2024-06-27 19:00:22,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 228 transitions, 2697 flow [2024-06-27 19:00:22,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 228 transitions, 2586 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:22,337 INFO L231 Difference]: Finished difference. Result has 125 places, 184 transitions, 2081 flow [2024-06-27 19:00:22,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2081, PETRI_PLACES=125, PETRI_TRANSITIONS=184} [2024-06-27 19:00:22,337 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 74 predicate places. [2024-06-27 19:00:22,337 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 184 transitions, 2081 flow [2024-06-27 19:00:22,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:22,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:22,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:22,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:00:22,338 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:22,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1247224632, now seen corresponding path program 3 times [2024-06-27 19:00:22,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:22,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364484173] [2024-06-27 19:00:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364484173] [2024-06-27 19:00:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364484173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:23,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:23,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:23,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175863515] [2024-06-27 19:00:23,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:23,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:23,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:23,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 184 transitions, 2081 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:23,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:23,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:23,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:24,249 INFO L124 PetriNetUnfolderBase]: 5134/8144 cut-off events. [2024-06-27 19:00:24,250 INFO L125 PetriNetUnfolderBase]: For 91366/91376 co-relation queries the response was YES. [2024-06-27 19:00:24,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42199 conditions, 8144 events. 5134/8144 cut-off events. For 91366/91376 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 50024 event pairs, 1398 based on Foata normal form. 12/7934 useless extension candidates. Maximal degree in co-relation 42140. Up to 7013 conditions per place. [2024-06-27 19:00:24,307 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 179 selfloop transitions, 71 changer transitions 0/257 dead transitions. [2024-06-27 19:00:24,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 257 transitions, 3226 flow [2024-06-27 19:00:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 19:00:24,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 19:00:24,308 INFO L175 Difference]: Start difference. First operand has 125 places, 184 transitions, 2081 flow. Second operand 8 states and 174 transitions. [2024-06-27 19:00:24,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 257 transitions, 3226 flow [2024-06-27 19:00:24,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 257 transitions, 3070 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:00:24,474 INFO L231 Difference]: Finished difference. Result has 131 places, 211 transitions, 2659 flow [2024-06-27 19:00:24,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2659, PETRI_PLACES=131, PETRI_TRANSITIONS=211} [2024-06-27 19:00:24,475 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-27 19:00:24,475 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 211 transitions, 2659 flow [2024-06-27 19:00:24,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:24,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:24,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:24,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:00:24,477 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:24,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:24,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1247231142, now seen corresponding path program 4 times [2024-06-27 19:00:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388265544] [2024-06-27 19:00:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:24,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388265544] [2024-06-27 19:00:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388265544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:25,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:25,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749556327] [2024-06-27 19:00:25,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:25,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:25,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 211 transitions, 2659 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:25,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:25,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:25,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:26,662 INFO L124 PetriNetUnfolderBase]: 5352/8478 cut-off events. [2024-06-27 19:00:26,663 INFO L125 PetriNetUnfolderBase]: For 101226/101236 co-relation queries the response was YES. [2024-06-27 19:00:26,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44800 conditions, 8478 events. 5352/8478 cut-off events. For 101226/101236 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 52245 event pairs, 1462 based on Foata normal form. 12/8266 useless extension candidates. Maximal degree in co-relation 44737. Up to 7017 conditions per place. [2024-06-27 19:00:26,731 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 190 selfloop transitions, 75 changer transitions 0/272 dead transitions. [2024-06-27 19:00:26,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 272 transitions, 3590 flow [2024-06-27 19:00:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 19:00:26,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 19:00:26,733 INFO L175 Difference]: Start difference. First operand has 131 places, 211 transitions, 2659 flow. Second operand 8 states and 172 transitions. [2024-06-27 19:00:26,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 272 transitions, 3590 flow [2024-06-27 19:00:26,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 272 transitions, 3422 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:26,995 INFO L231 Difference]: Finished difference. Result has 136 places, 224 transitions, 2885 flow [2024-06-27 19:00:26,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2885, PETRI_PLACES=136, PETRI_TRANSITIONS=224} [2024-06-27 19:00:26,996 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 85 predicate places. [2024-06-27 19:00:26,996 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 224 transitions, 2885 flow [2024-06-27 19:00:26,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:26,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:26,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:00:26,997 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:26,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1079227606, now seen corresponding path program 5 times [2024-06-27 19:00:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112620933] [2024-06-27 19:00:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:27,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112620933] [2024-06-27 19:00:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112620933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:27,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:27,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649188743] [2024-06-27 19:00:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:27,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:27,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:27,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 224 transitions, 2885 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:27,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:27,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:27,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:28,798 INFO L124 PetriNetUnfolderBase]: 5370/8498 cut-off events. [2024-06-27 19:00:28,798 INFO L125 PetriNetUnfolderBase]: For 108463/108473 co-relation queries the response was YES. [2024-06-27 19:00:28,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45990 conditions, 8498 events. 5370/8498 cut-off events. For 108463/108473 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 51941 event pairs, 1768 based on Foata normal form. 12/8286 useless extension candidates. Maximal degree in co-relation 45924. Up to 7648 conditions per place. [2024-06-27 19:00:28,866 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 242 selfloop transitions, 20 changer transitions 0/269 dead transitions. [2024-06-27 19:00:28,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 269 transitions, 3657 flow [2024-06-27 19:00:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 19:00:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-27 19:00:28,868 INFO L175 Difference]: Start difference. First operand has 136 places, 224 transitions, 2885 flow. Second operand 7 states and 152 transitions. [2024-06-27 19:00:28,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 269 transitions, 3657 flow [2024-06-27 19:00:29,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 269 transitions, 3551 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:29,129 INFO L231 Difference]: Finished difference. Result has 143 places, 234 transitions, 2997 flow [2024-06-27 19:00:29,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2997, PETRI_PLACES=143, PETRI_TRANSITIONS=234} [2024-06-27 19:00:29,130 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2024-06-27 19:00:29,130 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 234 transitions, 2997 flow [2024-06-27 19:00:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:29,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:29,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:29,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:00:29,131 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:29,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:29,131 INFO L85 PathProgramCache]: Analyzing trace with hash 492045937, now seen corresponding path program 1 times [2024-06-27 19:00:29,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:29,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781459348] [2024-06-27 19:00:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:29,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:29,507 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 19:00:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781459348] [2024-06-27 19:00:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781459348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:29,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327527156] [2024-06-27 19:00:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:29,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:29,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:29,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 234 transitions, 2997 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:29,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:29,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:29,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:30,745 INFO L124 PetriNetUnfolderBase]: 5410/8567 cut-off events. [2024-06-27 19:00:30,745 INFO L125 PetriNetUnfolderBase]: For 112383/112383 co-relation queries the response was YES. [2024-06-27 19:00:30,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46914 conditions, 8567 events. 5410/8567 cut-off events. For 112383/112383 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 52591 event pairs, 1860 based on Foata normal form. 2/8339 useless extension candidates. Maximal degree in co-relation 46843. Up to 7728 conditions per place. [2024-06-27 19:00:30,814 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 225 selfloop transitions, 35 changer transitions 0/267 dead transitions. [2024-06-27 19:00:30,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 267 transitions, 3733 flow [2024-06-27 19:00:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:00:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:00:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 19:00:30,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-27 19:00:30,816 INFO L175 Difference]: Start difference. First operand has 143 places, 234 transitions, 2997 flow. Second operand 6 states and 133 transitions. [2024-06-27 19:00:30,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 267 transitions, 3733 flow [2024-06-27 19:00:31,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 267 transitions, 3675 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:31,111 INFO L231 Difference]: Finished difference. Result has 147 places, 240 transitions, 3092 flow [2024-06-27 19:00:31,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3092, PETRI_PLACES=147, PETRI_TRANSITIONS=240} [2024-06-27 19:00:31,111 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 96 predicate places. [2024-06-27 19:00:31,111 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 240 transitions, 3092 flow [2024-06-27 19:00:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:31,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:31,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:00:31,112 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:31,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:31,112 INFO L85 PathProgramCache]: Analyzing trace with hash -135132591, now seen corresponding path program 2 times [2024-06-27 19:00:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363172724] [2024-06-27 19:00:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:31,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363172724] [2024-06-27 19:00:31,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363172724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:31,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:31,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:00:31,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008272684] [2024-06-27 19:00:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:31,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:00:31,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:31,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:00:31,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:00:31,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:31,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 240 transitions, 3092 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:31,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:31,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:31,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:32,707 INFO L124 PetriNetUnfolderBase]: 5404/8559 cut-off events. [2024-06-27 19:00:32,707 INFO L125 PetriNetUnfolderBase]: For 118019/118019 co-relation queries the response was YES. [2024-06-27 19:00:32,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47468 conditions, 8559 events. 5404/8559 cut-off events. For 118019/118019 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 52545 event pairs, 1865 based on Foata normal form. 2/8331 useless extension candidates. Maximal degree in co-relation 47395. Up to 7756 conditions per place. [2024-06-27 19:00:32,776 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 220 selfloop transitions, 32 changer transitions 0/259 dead transitions. [2024-06-27 19:00:32,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 259 transitions, 3662 flow [2024-06-27 19:00:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:00:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:00:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 19:00:32,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-06-27 19:00:32,777 INFO L175 Difference]: Start difference. First operand has 147 places, 240 transitions, 3092 flow. Second operand 5 states and 112 transitions. [2024-06-27 19:00:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 259 transitions, 3662 flow [2024-06-27 19:00:33,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 259 transitions, 3605 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:33,107 INFO L231 Difference]: Finished difference. Result has 150 places, 240 transitions, 3121 flow [2024-06-27 19:00:33,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3121, PETRI_PLACES=150, PETRI_TRANSITIONS=240} [2024-06-27 19:00:33,108 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2024-06-27 19:00:33,108 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 240 transitions, 3121 flow [2024-06-27 19:00:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:33,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:33,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:00:33,109 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:33,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 313614002, now seen corresponding path program 1 times [2024-06-27 19:00:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675563107] [2024-06-27 19:00:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675563107] [2024-06-27 19:00:34,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675563107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:34,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:34,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:00:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419136614] [2024-06-27 19:00:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:34,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:00:34,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:00:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:00:34,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:34,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 240 transitions, 3121 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 19:00:34,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:34,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:34,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:35,366 INFO L124 PetriNetUnfolderBase]: 5530/8815 cut-off events. [2024-06-27 19:00:35,366 INFO L125 PetriNetUnfolderBase]: For 127422/127439 co-relation queries the response was YES. [2024-06-27 19:00:35,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48856 conditions, 8815 events. 5530/8815 cut-off events. For 127422/127439 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 55360 event pairs, 1459 based on Foata normal form. 26/8589 useless extension candidates. Maximal degree in co-relation 48781. Up to 7370 conditions per place. [2024-06-27 19:00:35,445 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 226 selfloop transitions, 65 changer transitions 0/298 dead transitions. [2024-06-27 19:00:35,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 298 transitions, 3972 flow [2024-06-27 19:00:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 19:00:35,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-06-27 19:00:35,447 INFO L175 Difference]: Start difference. First operand has 150 places, 240 transitions, 3121 flow. Second operand 8 states and 187 transitions. [2024-06-27 19:00:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 298 transitions, 3972 flow [2024-06-27 19:00:35,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 298 transitions, 3908 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:35,776 INFO L231 Difference]: Finished difference. Result has 154 places, 243 transitions, 3282 flow [2024-06-27 19:00:35,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3282, PETRI_PLACES=154, PETRI_TRANSITIONS=243} [2024-06-27 19:00:35,777 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 103 predicate places. [2024-06-27 19:00:35,777 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 243 transitions, 3282 flow [2024-06-27 19:00:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 19:00:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:35,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:00:35,778 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:35,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 319178192, now seen corresponding path program 2 times [2024-06-27 19:00:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098814596] [2024-06-27 19:00:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:36,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:36,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098814596] [2024-06-27 19:00:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098814596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:00:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722583464] [2024-06-27 19:00:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:00:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:00:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:00:36,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:36,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 243 transitions, 3282 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 19:00:36,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:36,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:36,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:38,284 INFO L124 PetriNetUnfolderBase]: 5550/8867 cut-off events. [2024-06-27 19:00:38,284 INFO L125 PetriNetUnfolderBase]: For 137525/137527 co-relation queries the response was YES. [2024-06-27 19:00:38,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49814 conditions, 8867 events. 5550/8867 cut-off events. For 137525/137527 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 55789 event pairs, 1457 based on Foata normal form. 14/8624 useless extension candidates. Maximal degree in co-relation 49738. Up to 7056 conditions per place. [2024-06-27 19:00:38,350 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 222 selfloop transitions, 70 changer transitions 0/299 dead transitions. [2024-06-27 19:00:38,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 299 transitions, 4142 flow [2024-06-27 19:00:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 19:00:38,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 19:00:38,351 INFO L175 Difference]: Start difference. First operand has 154 places, 243 transitions, 3282 flow. Second operand 8 states and 183 transitions. [2024-06-27 19:00:38,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 299 transitions, 4142 flow [2024-06-27 19:00:38,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 299 transitions, 3935 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 19:00:38,619 INFO L231 Difference]: Finished difference. Result has 156 places, 246 transitions, 3318 flow [2024-06-27 19:00:38,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3318, PETRI_PLACES=156, PETRI_TRANSITIONS=246} [2024-06-27 19:00:38,620 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-27 19:00:38,620 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 246 transitions, 3318 flow [2024-06-27 19:00:38,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 19:00:38,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:38,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:38,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:00:38,621 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:38,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1236171427, now seen corresponding path program 1 times [2024-06-27 19:00:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844035471] [2024-06-27 19:00:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:39,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844035471] [2024-06-27 19:00:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844035471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:39,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:39,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805093072] [2024-06-27 19:00:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:39,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:39,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 246 transitions, 3318 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:39,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:39,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:39,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:40,454 INFO L124 PetriNetUnfolderBase]: 5726/9213 cut-off events. [2024-06-27 19:00:40,454 INFO L125 PetriNetUnfolderBase]: For 137319/137336 co-relation queries the response was YES. [2024-06-27 19:00:40,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51354 conditions, 9213 events. 5726/9213 cut-off events. For 137319/137336 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 59338 event pairs, 1518 based on Foata normal form. 17/8936 useless extension candidates. Maximal degree in co-relation 51277. Up to 7602 conditions per place. [2024-06-27 19:00:40,525 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 235 selfloop transitions, 67 changer transitions 0/309 dead transitions. [2024-06-27 19:00:40,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 309 transitions, 4432 flow [2024-06-27 19:00:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 19:00:40,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-06-27 19:00:40,527 INFO L175 Difference]: Start difference. First operand has 156 places, 246 transitions, 3318 flow. Second operand 7 states and 167 transitions. [2024-06-27 19:00:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 309 transitions, 4432 flow [2024-06-27 19:00:40,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 309 transitions, 4237 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 19:00:40,792 INFO L231 Difference]: Finished difference. Result has 159 places, 264 transitions, 3571 flow [2024-06-27 19:00:40,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3571, PETRI_PLACES=159, PETRI_TRANSITIONS=264} [2024-06-27 19:00:40,793 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-06-27 19:00:40,793 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 264 transitions, 3571 flow [2024-06-27 19:00:40,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:40,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:40,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:00:40,794 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:40,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1005003063, now seen corresponding path program 2 times [2024-06-27 19:00:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799511069] [2024-06-27 19:00:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:40,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799511069] [2024-06-27 19:00:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799511069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:41,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:41,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:41,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591227915] [2024-06-27 19:00:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:41,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:41,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:41,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 264 transitions, 3571 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:41,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:41,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:41,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:42,685 INFO L124 PetriNetUnfolderBase]: 5902/9317 cut-off events. [2024-06-27 19:00:42,685 INFO L125 PetriNetUnfolderBase]: For 149145/149160 co-relation queries the response was YES. [2024-06-27 19:00:42,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54705 conditions, 9317 events. 5902/9317 cut-off events. For 149145/149160 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58296 event pairs, 1646 based on Foata normal form. 15/9079 useless extension candidates. Maximal degree in co-relation 54625. Up to 8366 conditions per place. [2024-06-27 19:00:42,761 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 277 selfloop transitions, 33 changer transitions 0/317 dead transitions. [2024-06-27 19:00:42,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 317 transitions, 4605 flow [2024-06-27 19:00:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 19:00:42,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 19:00:42,762 INFO L175 Difference]: Start difference. First operand has 159 places, 264 transitions, 3571 flow. Second operand 8 states and 174 transitions. [2024-06-27 19:00:42,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 317 transitions, 4605 flow [2024-06-27 19:00:43,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 317 transitions, 4525 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-06-27 19:00:43,145 INFO L231 Difference]: Finished difference. Result has 167 places, 275 transitions, 3754 flow [2024-06-27 19:00:43,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3754, PETRI_PLACES=167, PETRI_TRANSITIONS=275} [2024-06-27 19:00:43,146 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 116 predicate places. [2024-06-27 19:00:43,146 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 275 transitions, 3754 flow [2024-06-27 19:00:43,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:43,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:43,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:43,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:00:43,147 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:43,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 645370800, now seen corresponding path program 1 times [2024-06-27 19:00:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936046218] [2024-06-27 19:00:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:43,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:43,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936046218] [2024-06-27 19:00:43,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936046218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:43,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:43,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063639514] [2024-06-27 19:00:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:43,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:43,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:43,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:43,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:43,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:43,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 275 transitions, 3754 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:43,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:43,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:43,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:45,054 INFO L124 PetriNetUnfolderBase]: 5935/9370 cut-off events. [2024-06-27 19:00:45,054 INFO L125 PetriNetUnfolderBase]: For 154590/154605 co-relation queries the response was YES. [2024-06-27 19:00:45,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55211 conditions, 9370 events. 5935/9370 cut-off events. For 154590/154605 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 58560 event pairs, 1667 based on Foata normal form. 14/9127 useless extension candidates. Maximal degree in co-relation 55127. Up to 8454 conditions per place. [2024-06-27 19:00:45,133 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 280 selfloop transitions, 42 changer transitions 0/329 dead transitions. [2024-06-27 19:00:45,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 329 transitions, 4861 flow [2024-06-27 19:00:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:45,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:00:45,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 19:00:45,135 INFO L175 Difference]: Start difference. First operand has 167 places, 275 transitions, 3754 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:00:45,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 329 transitions, 4861 flow [2024-06-27 19:00:45,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 329 transitions, 4731 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:45,622 INFO L231 Difference]: Finished difference. Result has 172 places, 296 transitions, 4052 flow [2024-06-27 19:00:45,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4052, PETRI_PLACES=172, PETRI_TRANSITIONS=296} [2024-06-27 19:00:45,622 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 121 predicate places. [2024-06-27 19:00:45,622 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 296 transitions, 4052 flow [2024-06-27 19:00:45,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:45,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:45,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:00:45,623 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:45,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1967480900, now seen corresponding path program 3 times [2024-06-27 19:00:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:45,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675223303] [2024-06-27 19:00:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675223303] [2024-06-27 19:00:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675223303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862640582] [2024-06-27 19:00:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:46,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:46,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:46,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 296 transitions, 4052 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:46,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:46,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:46,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:48,011 INFO L124 PetriNetUnfolderBase]: 6021/9497 cut-off events. [2024-06-27 19:00:48,011 INFO L125 PetriNetUnfolderBase]: For 169961/169992 co-relation queries the response was YES. [2024-06-27 19:00:48,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57000 conditions, 9497 events. 6021/9497 cut-off events. For 169961/169992 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 59513 event pairs, 1492 based on Foata normal form. 38/9285 useless extension candidates. Maximal degree in co-relation 56913. Up to 8006 conditions per place. [2024-06-27 19:00:48,248 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 282 selfloop transitions, 68 changer transitions 0/357 dead transitions. [2024-06-27 19:00:48,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 357 transitions, 5127 flow [2024-06-27 19:00:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 19:00:48,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 19:00:48,250 INFO L175 Difference]: Start difference. First operand has 172 places, 296 transitions, 4052 flow. Second operand 8 states and 185 transitions. [2024-06-27 19:00:48,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 357 transitions, 5127 flow [2024-06-27 19:00:48,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 357 transitions, 4974 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:48,728 INFO L231 Difference]: Finished difference. Result has 177 places, 307 transitions, 4259 flow [2024-06-27 19:00:48,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3907, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4259, PETRI_PLACES=177, PETRI_TRANSITIONS=307} [2024-06-27 19:00:48,729 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-06-27 19:00:48,729 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 307 transitions, 4259 flow [2024-06-27 19:00:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:48,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:48,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:00:48,730 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:48,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash 9460770, now seen corresponding path program 4 times [2024-06-27 19:00:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:48,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046430017] [2024-06-27 19:00:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:48,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046430017] [2024-06-27 19:00:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046430017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:49,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916122578] [2024-06-27 19:00:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:49,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:49,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:49,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 307 transitions, 4259 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:49,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:49,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:49,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:51,298 INFO L124 PetriNetUnfolderBase]: 6107/9618 cut-off events. [2024-06-27 19:00:51,299 INFO L125 PetriNetUnfolderBase]: For 181664/181678 co-relation queries the response was YES. [2024-06-27 19:00:51,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58468 conditions, 9618 events. 6107/9618 cut-off events. For 181664/181678 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 60263 event pairs, 1503 based on Foata normal form. 24/9398 useless extension candidates. Maximal degree in co-relation 58380. Up to 7824 conditions per place. [2024-06-27 19:00:51,393 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 292 selfloop transitions, 81 changer transitions 0/380 dead transitions. [2024-06-27 19:00:51,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 380 transitions, 5544 flow [2024-06-27 19:00:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 19:00:51,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-27 19:00:51,394 INFO L175 Difference]: Start difference. First operand has 177 places, 307 transitions, 4259 flow. Second operand 8 states and 181 transitions. [2024-06-27 19:00:51,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 380 transitions, 5544 flow [2024-06-27 19:00:52,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 380 transitions, 5427 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:52,013 INFO L231 Difference]: Finished difference. Result has 184 places, 333 transitions, 4766 flow [2024-06-27 19:00:52,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4142, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4766, PETRI_PLACES=184, PETRI_TRANSITIONS=333} [2024-06-27 19:00:52,014 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 133 predicate places. [2024-06-27 19:00:52,014 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 333 transitions, 4766 flow [2024-06-27 19:00:52,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:52,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:52,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:52,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:00:52,015 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash 293666910, now seen corresponding path program 5 times [2024-06-27 19:00:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:52,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999669087] [2024-06-27 19:00:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:52,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:52,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999669087] [2024-06-27 19:00:52,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999669087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:52,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:52,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:52,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188088812] [2024-06-27 19:00:52,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:52,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:52,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:52,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 333 transitions, 4766 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:52,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:52,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:52,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:54,342 INFO L124 PetriNetUnfolderBase]: 6100/9612 cut-off events. [2024-06-27 19:00:54,342 INFO L125 PetriNetUnfolderBase]: For 185818/185832 co-relation queries the response was YES. [2024-06-27 19:00:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59227 conditions, 9612 events. 6100/9612 cut-off events. For 185818/185832 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 59880 event pairs, 1913 based on Foata normal form. 24/9391 useless extension candidates. Maximal degree in co-relation 59135. Up to 8578 conditions per place. [2024-06-27 19:00:54,428 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 347 selfloop transitions, 39 changer transitions 0/393 dead transitions. [2024-06-27 19:00:54,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 393 transitions, 5948 flow [2024-06-27 19:00:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 19:00:54,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 19:00:54,430 INFO L175 Difference]: Start difference. First operand has 184 places, 333 transitions, 4766 flow. Second operand 8 states and 173 transitions. [2024-06-27 19:00:54,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 393 transitions, 5948 flow [2024-06-27 19:00:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 393 transitions, 5740 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:54,966 INFO L231 Difference]: Finished difference. Result has 191 places, 351 transitions, 4974 flow [2024-06-27 19:00:54,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4974, PETRI_PLACES=191, PETRI_TRANSITIONS=351} [2024-06-27 19:00:54,966 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 140 predicate places. [2024-06-27 19:00:54,966 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 351 transitions, 4974 flow [2024-06-27 19:00:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:54,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:54,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:00:54,967 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:54,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:54,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1358343543, now seen corresponding path program 3 times [2024-06-27 19:00:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703942850] [2024-06-27 19:00:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:55,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:55,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703942850] [2024-06-27 19:00:55,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703942850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:55,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:55,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642127693] [2024-06-27 19:00:55,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:55,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:55,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:55,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:55,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:55,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 351 transitions, 4974 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:55,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:55,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:57,062 INFO L124 PetriNetUnfolderBase]: 6233/9879 cut-off events. [2024-06-27 19:00:57,062 INFO L125 PetriNetUnfolderBase]: For 187308/187325 co-relation queries the response was YES. [2024-06-27 19:00:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61045 conditions, 9879 events. 6233/9879 cut-off events. For 187308/187325 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 62882 event pairs, 1574 based on Foata normal form. 17/9618 useless extension candidates. Maximal degree in co-relation 60948. Up to 8492 conditions per place. [2024-06-27 19:00:57,151 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 323 selfloop transitions, 75 changer transitions 0/405 dead transitions. [2024-06-27 19:00:57,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 405 transitions, 6185 flow [2024-06-27 19:00:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 19:00:57,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206349206349207 [2024-06-27 19:00:57,153 INFO L175 Difference]: Start difference. First operand has 191 places, 351 transitions, 4974 flow. Second operand 7 states and 164 transitions. [2024-06-27 19:00:57,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 405 transitions, 6185 flow [2024-06-27 19:00:57,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 405 transitions, 5877 flow, removed 145 selfloop flow, removed 2 redundant places. [2024-06-27 19:00:57,866 INFO L231 Difference]: Finished difference. Result has 198 places, 360 transitions, 5072 flow [2024-06-27 19:00:57,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4666, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5072, PETRI_PLACES=198, PETRI_TRANSITIONS=360} [2024-06-27 19:00:57,866 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2024-06-27 19:00:57,866 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 360 transitions, 5072 flow [2024-06-27 19:00:57,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:57,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:57,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:57,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:00:57,867 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:57,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1999688880, now seen corresponding path program 2 times [2024-06-27 19:00:57,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:57,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591974060] [2024-06-27 19:00:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:57,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591974060] [2024-06-27 19:00:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591974060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:00:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626479282] [2024-06-27 19:00:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:58,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:00:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:00:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:00:58,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:00:58,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 360 transitions, 5072 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:00:58,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:58,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:00:58,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:00,035 INFO L124 PetriNetUnfolderBase]: 6263/9846 cut-off events. [2024-06-27 19:01:00,035 INFO L125 PetriNetUnfolderBase]: For 192187/192187 co-relation queries the response was YES. [2024-06-27 19:01:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61728 conditions, 9846 events. 6263/9846 cut-off events. For 192187/192187 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 61454 event pairs, 2022 based on Foata normal form. 2/9597 useless extension candidates. Maximal degree in co-relation 61627. Up to 8979 conditions per place. [2024-06-27 19:01:00,123 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 352 selfloop transitions, 32 changer transitions 0/391 dead transitions. [2024-06-27 19:01:00,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 391 transitions, 6089 flow [2024-06-27 19:01:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 19:01:00,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 19:01:00,125 INFO L175 Difference]: Start difference. First operand has 198 places, 360 transitions, 5072 flow. Second operand 8 states and 156 transitions. [2024-06-27 19:01:00,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 391 transitions, 6089 flow [2024-06-27 19:01:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 391 transitions, 5964 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:00,686 INFO L231 Difference]: Finished difference. Result has 204 places, 367 transitions, 5139 flow [2024-06-27 19:01:00,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4948, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5139, PETRI_PLACES=204, PETRI_TRANSITIONS=367} [2024-06-27 19:01:00,687 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-27 19:01:00,687 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 367 transitions, 5139 flow [2024-06-27 19:01:00,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:00,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:00,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:00,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:01:00,688 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:00,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1223811386, now seen corresponding path program 3 times [2024-06-27 19:01:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:00,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059348551] [2024-06-27 19:01:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:00,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059348551] [2024-06-27 19:01:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059348551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:01,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:01,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765460266] [2024-06-27 19:01:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:01,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:01,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:01,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:01,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 367 transitions, 5139 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:01,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:01,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:01,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:02,882 INFO L124 PetriNetUnfolderBase]: 6281/9871 cut-off events. [2024-06-27 19:01:02,882 INFO L125 PetriNetUnfolderBase]: For 196781/196781 co-relation queries the response was YES. [2024-06-27 19:01:02,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61656 conditions, 9871 events. 6281/9871 cut-off events. For 196781/196781 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 61559 event pairs, 2032 based on Foata normal form. 2/9622 useless extension candidates. Maximal degree in co-relation 61553. Up to 9038 conditions per place. [2024-06-27 19:01:02,978 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 359 selfloop transitions, 28 changer transitions 0/394 dead transitions. [2024-06-27 19:01:02,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 394 transitions, 6088 flow [2024-06-27 19:01:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-27 19:01:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 19:01:02,979 INFO L175 Difference]: Start difference. First operand has 204 places, 367 transitions, 5139 flow. Second operand 6 states and 125 transitions. [2024-06-27 19:01:02,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 394 transitions, 6088 flow [2024-06-27 19:01:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 394 transitions, 5991 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:03,556 INFO L231 Difference]: Finished difference. Result has 208 places, 376 transitions, 5239 flow [2024-06-27 19:01:03,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5239, PETRI_PLACES=208, PETRI_TRANSITIONS=376} [2024-06-27 19:01:03,557 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 157 predicate places. [2024-06-27 19:01:03,557 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 376 transitions, 5239 flow [2024-06-27 19:01:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:03,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:03,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:03,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:01:03,557 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:03,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1210948587, now seen corresponding path program 1 times [2024-06-27 19:01:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930596625] [2024-06-27 19:01:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:03,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930596625] [2024-06-27 19:01:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930596625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:03,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:03,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:03,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960372317] [2024-06-27 19:01:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:03,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:04,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:04,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 376 transitions, 5239 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:04,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:04,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:04,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:05,750 INFO L124 PetriNetUnfolderBase]: 6341/9942 cut-off events. [2024-06-27 19:01:05,751 INFO L125 PetriNetUnfolderBase]: For 204299/204299 co-relation queries the response was YES. [2024-06-27 19:01:05,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62752 conditions, 9942 events. 6341/9942 cut-off events. For 204299/204299 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 61909 event pairs, 2018 based on Foata normal form. 4/9697 useless extension candidates. Maximal degree in co-relation 62646. Up to 8954 conditions per place. [2024-06-27 19:01:05,859 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 369 selfloop transitions, 46 changer transitions 0/422 dead transitions. [2024-06-27 19:01:05,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 422 transitions, 6465 flow [2024-06-27 19:01:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 19:01:05,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 19:01:05,865 INFO L175 Difference]: Start difference. First operand has 208 places, 376 transitions, 5239 flow. Second operand 7 states and 153 transitions. [2024-06-27 19:01:05,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 422 transitions, 6465 flow [2024-06-27 19:01:06,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 422 transitions, 6395 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 19:01:06,690 INFO L231 Difference]: Finished difference. Result has 215 places, 390 transitions, 5505 flow [2024-06-27 19:01:06,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5169, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5505, PETRI_PLACES=215, PETRI_TRANSITIONS=390} [2024-06-27 19:01:06,696 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 164 predicate places. [2024-06-27 19:01:06,697 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 390 transitions, 5505 flow [2024-06-27 19:01:06,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:06,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:06,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:01:06,697 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:06,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 106065767, now seen corresponding path program 2 times [2024-06-27 19:01:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626390285] [2024-06-27 19:01:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:06,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:07,204 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 19:01:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626390285] [2024-06-27 19:01:07,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626390285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:07,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:07,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:07,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074567888] [2024-06-27 19:01:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:07,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:07,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:07,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 390 transitions, 5505 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:07,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:07,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:07,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:08,910 INFO L124 PetriNetUnfolderBase]: 6401/10037 cut-off events. [2024-06-27 19:01:08,910 INFO L125 PetriNetUnfolderBase]: For 216092/216092 co-relation queries the response was YES. [2024-06-27 19:01:08,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64513 conditions, 10037 events. 6401/10037 cut-off events. For 216092/216092 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 62567 event pairs, 2025 based on Foata normal form. 4/9788 useless extension candidates. Maximal degree in co-relation 64403. Up to 9067 conditions per place. [2024-06-27 19:01:09,018 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 378 selfloop transitions, 45 changer transitions 0/430 dead transitions. [2024-06-27 19:01:09,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 430 transitions, 6661 flow [2024-06-27 19:01:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 19:01:09,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-27 19:01:09,020 INFO L175 Difference]: Start difference. First operand has 215 places, 390 transitions, 5505 flow. Second operand 8 states and 169 transitions. [2024-06-27 19:01:09,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 430 transitions, 6661 flow [2024-06-27 19:01:09,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 430 transitions, 6564 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 19:01:09,694 INFO L231 Difference]: Finished difference. Result has 222 places, 396 transitions, 5627 flow [2024-06-27 19:01:09,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5414, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5627, PETRI_PLACES=222, PETRI_TRANSITIONS=396} [2024-06-27 19:01:09,703 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 171 predicate places. [2024-06-27 19:01:09,704 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 396 transitions, 5627 flow [2024-06-27 19:01:09,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:09,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:09,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:09,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:01:09,705 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:09,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash 105858377, now seen corresponding path program 3 times [2024-06-27 19:01:09,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:09,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984328438] [2024-06-27 19:01:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:10,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984328438] [2024-06-27 19:01:10,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984328438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:10,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535013383] [2024-06-27 19:01:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:10,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:10,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:10,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 396 transitions, 5627 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:10,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:10,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:10,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:11,897 INFO L124 PetriNetUnfolderBase]: 6389/10021 cut-off events. [2024-06-27 19:01:11,898 INFO L125 PetriNetUnfolderBase]: For 218811/218811 co-relation queries the response was YES. [2024-06-27 19:01:11,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64471 conditions, 10021 events. 6389/10021 cut-off events. For 218811/218811 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 62454 event pairs, 2029 based on Foata normal form. 4/9771 useless extension candidates. Maximal degree in co-relation 64358. Up to 9059 conditions per place. [2024-06-27 19:01:12,001 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 371 selfloop transitions, 43 changer transitions 0/421 dead transitions. [2024-06-27 19:01:12,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 421 transitions, 6561 flow [2024-06-27 19:01:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 19:01:12,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-27 19:01:12,005 INFO L175 Difference]: Start difference. First operand has 222 places, 396 transitions, 5627 flow. Second operand 6 states and 133 transitions. [2024-06-27 19:01:12,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 421 transitions, 6561 flow [2024-06-27 19:01:12,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 421 transitions, 6385 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 19:01:12,744 INFO L231 Difference]: Finished difference. Result has 223 places, 396 transitions, 5545 flow [2024-06-27 19:01:12,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5451, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5545, PETRI_PLACES=223, PETRI_TRANSITIONS=396} [2024-06-27 19:01:12,746 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 172 predicate places. [2024-06-27 19:01:12,746 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 396 transitions, 5545 flow [2024-06-27 19:01:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:12,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:12,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:01:12,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:01:12,747 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:12,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash 106073703, now seen corresponding path program 1 times [2024-06-27 19:01:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:12,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777922212] [2024-06-27 19:01:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:13,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:13,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777922212] [2024-06-27 19:01:13,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777922212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:13,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:13,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563908632] [2024-06-27 19:01:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:13,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:13,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:13,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:13,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 396 transitions, 5545 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:13,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:13,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:13,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:15,034 INFO L124 PetriNetUnfolderBase]: 6384/10014 cut-off events. [2024-06-27 19:01:15,035 INFO L125 PetriNetUnfolderBase]: For 219631/219631 co-relation queries the response was YES. [2024-06-27 19:01:15,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64107 conditions, 10014 events. 6384/10014 cut-off events. For 219631/219631 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 62380 event pairs, 2022 based on Foata normal form. 2/9763 useless extension candidates. Maximal degree in co-relation 63993. Up to 9175 conditions per place. [2024-06-27 19:01:15,147 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 385 selfloop transitions, 25 changer transitions 0/417 dead transitions. [2024-06-27 19:01:15,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 417 transitions, 6491 flow [2024-06-27 19:01:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-27 19:01:15,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 19:01:15,149 INFO L175 Difference]: Start difference. First operand has 223 places, 396 transitions, 5545 flow. Second operand 6 states and 123 transitions. [2024-06-27 19:01:15,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 417 transitions, 6491 flow [2024-06-27 19:01:15,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 417 transitions, 6405 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 19:01:15,853 INFO L231 Difference]: Finished difference. Result has 224 places, 399 transitions, 5581 flow [2024-06-27 19:01:15,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5459, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5581, PETRI_PLACES=224, PETRI_TRANSITIONS=399} [2024-06-27 19:01:15,854 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 173 predicate places. [2024-06-27 19:01:15,854 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 399 transitions, 5581 flow [2024-06-27 19:01:15,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:15,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:15,855 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 19:01:15,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:01:15,855 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:15,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1085567341, now seen corresponding path program 1 times [2024-06-27 19:01:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181238329] [2024-06-27 19:01:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:16,356 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 19:01:16,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:16,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181238329] [2024-06-27 19:01:16,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181238329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:16,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:16,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:16,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841983653] [2024-06-27 19:01:16,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:16,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:16,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:16,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 399 transitions, 5581 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:16,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:16,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:16,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:18,176 INFO L124 PetriNetUnfolderBase]: 6510/10252 cut-off events. [2024-06-27 19:01:18,176 INFO L125 PetriNetUnfolderBase]: For 234247/234249 co-relation queries the response was YES. [2024-06-27 19:01:18,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66248 conditions, 10252 events. 6510/10252 cut-off events. For 234247/234249 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 64920 event pairs, 1563 based on Foata normal form. 6/9980 useless extension candidates. Maximal degree in co-relation 66133. Up to 8409 conditions per place. [2024-06-27 19:01:18,274 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 354 selfloop transitions, 93 changer transitions 0/454 dead transitions. [2024-06-27 19:01:18,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 454 transitions, 7065 flow [2024-06-27 19:01:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 19:01:18,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174603174603175 [2024-06-27 19:01:18,275 INFO L175 Difference]: Start difference. First operand has 224 places, 399 transitions, 5581 flow. Second operand 7 states and 163 transitions. [2024-06-27 19:01:18,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 454 transitions, 7065 flow [2024-06-27 19:01:18,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 454 transitions, 6969 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 19:01:18,994 INFO L231 Difference]: Finished difference. Result has 228 places, 408 transitions, 5896 flow [2024-06-27 19:01:18,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5485, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5896, PETRI_PLACES=228, PETRI_TRANSITIONS=408} [2024-06-27 19:01:18,994 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 177 predicate places. [2024-06-27 19:01:18,995 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 408 transitions, 5896 flow [2024-06-27 19:01:18,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:18,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:18,995 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 19:01:18,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:01:18,995 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:18,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:18,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1090328941, now seen corresponding path program 2 times [2024-06-27 19:01:18,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:18,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301272574] [2024-06-27 19:01:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:18,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301272574] [2024-06-27 19:01:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301272574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:19,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:19,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561156757] [2024-06-27 19:01:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:19,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:19,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:19,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 408 transitions, 5896 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:19,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:19,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:19,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:21,445 INFO L124 PetriNetUnfolderBase]: 6494/10154 cut-off events. [2024-06-27 19:01:21,445 INFO L125 PetriNetUnfolderBase]: For 238407/238424 co-relation queries the response was YES. [2024-06-27 19:01:21,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67164 conditions, 10154 events. 6494/10154 cut-off events. For 238407/238424 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 63537 event pairs, 1710 based on Foata normal form. 18/9916 useless extension candidates. Maximal degree in co-relation 67047. Up to 9203 conditions per place. [2024-06-27 19:01:21,548 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 402 selfloop transitions, 40 changer transitions 0/449 dead transitions. [2024-06-27 19:01:21,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 449 transitions, 7000 flow [2024-06-27 19:01:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 19:01:21,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 19:01:21,549 INFO L175 Difference]: Start difference. First operand has 228 places, 408 transitions, 5896 flow. Second operand 8 states and 172 transitions. [2024-06-27 19:01:21,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 449 transitions, 7000 flow [2024-06-27 19:01:22,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 449 transitions, 6830 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:22,425 INFO L231 Difference]: Finished difference. Result has 233 places, 408 transitions, 5815 flow [2024-06-27 19:01:22,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5726, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5815, PETRI_PLACES=233, PETRI_TRANSITIONS=408} [2024-06-27 19:01:22,426 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 182 predicate places. [2024-06-27 19:01:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 408 transitions, 5815 flow [2024-06-27 19:01:22,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:22,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:22,429 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 19:01:22,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:01:22,430 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:22,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1081754093, now seen corresponding path program 1 times [2024-06-27 19:01:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:22,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931174351] [2024-06-27 19:01:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:22,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931174351] [2024-06-27 19:01:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931174351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:23,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:23,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778012869] [2024-06-27 19:01:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:23,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:23,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:23,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:23,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 408 transitions, 5815 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:23,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:23,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:23,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:25,485 INFO L124 PetriNetUnfolderBase]: 6608/10415 cut-off events. [2024-06-27 19:01:25,485 INFO L125 PetriNetUnfolderBase]: For 246801/246820 co-relation queries the response was YES. [2024-06-27 19:01:25,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67448 conditions, 10415 events. 6608/10415 cut-off events. For 246801/246820 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 66347 event pairs, 1577 based on Foata normal form. 19/10146 useless extension candidates. Maximal degree in co-relation 67330. Up to 8299 conditions per place. [2024-06-27 19:01:25,597 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 360 selfloop transitions, 118 changer transitions 0/485 dead transitions. [2024-06-27 19:01:25,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 485 transitions, 7530 flow [2024-06-27 19:01:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:01:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:01:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 19:01:25,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 19:01:25,599 INFO L175 Difference]: Start difference. First operand has 233 places, 408 transitions, 5815 flow. Second operand 9 states and 216 transitions. [2024-06-27 19:01:25,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 485 transitions, 7530 flow [2024-06-27 19:01:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 485 transitions, 7469 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 19:01:26,423 INFO L231 Difference]: Finished difference. Result has 237 places, 418 transitions, 6209 flow [2024-06-27 19:01:26,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6209, PETRI_PLACES=237, PETRI_TRANSITIONS=418} [2024-06-27 19:01:26,425 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 186 predicate places. [2024-06-27 19:01:26,425 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 418 transitions, 6209 flow [2024-06-27 19:01:26,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:26,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:26,426 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 19:01:26,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:01:26,426 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1081993413, now seen corresponding path program 1 times [2024-06-27 19:01:26,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:26,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75163017] [2024-06-27 19:01:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:26,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75163017] [2024-06-27 19:01:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75163017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:26,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:26,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323637442] [2024-06-27 19:01:26,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:26,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:26,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:27,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:27,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 418 transitions, 6209 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:27,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:27,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:27,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:29,006 INFO L124 PetriNetUnfolderBase]: 7123/11016 cut-off events. [2024-06-27 19:01:29,006 INFO L125 PetriNetUnfolderBase]: For 299587/299620 co-relation queries the response was YES. [2024-06-27 19:01:29,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75585 conditions, 11016 events. 7123/11016 cut-off events. For 299587/299620 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 68702 event pairs, 1552 based on Foata normal form. 40/10797 useless extension candidates. Maximal degree in co-relation 75465. Up to 7727 conditions per place. [2024-06-27 19:01:29,147 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 392 selfloop transitions, 144 changer transitions 0/543 dead transitions. [2024-06-27 19:01:29,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 543 transitions, 9078 flow [2024-06-27 19:01:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:01:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:01:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 19:01:29,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-27 19:01:29,149 INFO L175 Difference]: Start difference. First operand has 237 places, 418 transitions, 6209 flow. Second operand 8 states and 199 transitions. [2024-06-27 19:01:29,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 543 transitions, 9078 flow [2024-06-27 19:01:29,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 543 transitions, 8708 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-27 19:01:30,000 INFO L231 Difference]: Finished difference. Result has 243 places, 468 transitions, 7292 flow [2024-06-27 19:01:30,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5963, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7292, PETRI_PLACES=243, PETRI_TRANSITIONS=468} [2024-06-27 19:01:30,001 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 192 predicate places. [2024-06-27 19:01:30,001 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 468 transitions, 7292 flow [2024-06-27 19:01:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:30,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:30,001 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 19:01:30,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:01:30,002 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:30,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1090325283, now seen corresponding path program 2 times [2024-06-27 19:01:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794701580] [2024-06-27 19:01:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:30,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:30,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794701580] [2024-06-27 19:01:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794701580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:30,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:30,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996734315] [2024-06-27 19:01:30,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:30,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:30,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 468 transitions, 7292 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:30,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:30,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:33,014 INFO L124 PetriNetUnfolderBase]: 7867/11996 cut-off events. [2024-06-27 19:01:33,015 INFO L125 PetriNetUnfolderBase]: For 367781/367800 co-relation queries the response was YES. [2024-06-27 19:01:33,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88787 conditions, 11996 events. 7867/11996 cut-off events. For 367781/367800 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 74020 event pairs, 1875 based on Foata normal form. 28/11765 useless extension candidates. Maximal degree in co-relation 88662. Up to 10295 conditions per place. [2024-06-27 19:01:33,181 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 458 selfloop transitions, 79 changer transitions 0/544 dead transitions. [2024-06-27 19:01:33,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 544 transitions, 9379 flow [2024-06-27 19:01:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:01:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:01:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 19:01:33,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508641975308642 [2024-06-27 19:01:33,183 INFO L175 Difference]: Start difference. First operand has 243 places, 468 transitions, 7292 flow. Second operand 9 states and 206 transitions. [2024-06-27 19:01:33,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 544 transitions, 9379 flow [2024-06-27 19:01:34,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 544 transitions, 9126 flow, removed 106 selfloop flow, removed 2 redundant places. [2024-06-27 19:01:34,453 INFO L231 Difference]: Finished difference. Result has 252 places, 491 transitions, 7734 flow [2024-06-27 19:01:34,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7083, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7734, PETRI_PLACES=252, PETRI_TRANSITIONS=491} [2024-06-27 19:01:34,454 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 201 predicate places. [2024-06-27 19:01:34,454 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 491 transitions, 7734 flow [2024-06-27 19:01:34,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:34,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:34,454 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 19:01:34,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:01:34,455 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:34,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1090324973, now seen corresponding path program 2 times [2024-06-27 19:01:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550237111] [2024-06-27 19:01:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:34,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:35,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:35,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550237111] [2024-06-27 19:01:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550237111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:35,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131052298] [2024-06-27 19:01:35,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:35,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:35,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:35,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:35,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 491 transitions, 7734 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:35,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:35,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:37,597 INFO L124 PetriNetUnfolderBase]: 7840/11963 cut-off events. [2024-06-27 19:01:37,597 INFO L125 PetriNetUnfolderBase]: For 362192/362211 co-relation queries the response was YES. [2024-06-27 19:01:37,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88133 conditions, 11963 events. 7840/11963 cut-off events. For 362192/362211 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 73876 event pairs, 1840 based on Foata normal form. 25/11728 useless extension candidates. Maximal degree in co-relation 88004. Up to 10483 conditions per place. [2024-06-27 19:01:37,761 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 465 selfloop transitions, 84 changer transitions 0/556 dead transitions. [2024-06-27 19:01:37,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 556 transitions, 9679 flow [2024-06-27 19:01:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:01:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:01:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 19:01:37,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-27 19:01:37,763 INFO L175 Difference]: Start difference. First operand has 252 places, 491 transitions, 7734 flow. Second operand 9 states and 204 transitions. [2024-06-27 19:01:37,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 556 transitions, 9679 flow [2024-06-27 19:01:39,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 556 transitions, 9384 flow, removed 116 selfloop flow, removed 4 redundant places. [2024-06-27 19:01:39,369 INFO L231 Difference]: Finished difference. Result has 259 places, 507 transitions, 8035 flow [2024-06-27 19:01:39,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7531, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8035, PETRI_PLACES=259, PETRI_TRANSITIONS=507} [2024-06-27 19:01:39,370 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2024-06-27 19:01:39,370 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 507 transitions, 8035 flow [2024-06-27 19:01:39,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:39,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:39,370 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 19:01:39,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:01:39,371 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:39,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1468340619, now seen corresponding path program 3 times [2024-06-27 19:01:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:39,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787037402] [2024-06-27 19:01:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:39,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787037402] [2024-06-27 19:01:39,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787037402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:39,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:39,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:01:39,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220482283] [2024-06-27 19:01:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:39,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:01:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:01:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:01:39,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:39,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 507 transitions, 8035 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:39,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:39,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:42,407 INFO L124 PetriNetUnfolderBase]: 7898/12038 cut-off events. [2024-06-27 19:01:42,407 INFO L125 PetriNetUnfolderBase]: For 363517/363536 co-relation queries the response was YES. [2024-06-27 19:01:42,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88715 conditions, 12038 events. 7898/12038 cut-off events. For 363517/363536 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 74277 event pairs, 1862 based on Foata normal form. 22/11801 useless extension candidates. Maximal degree in co-relation 88582. Up to 10328 conditions per place. [2024-06-27 19:01:42,559 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 466 selfloop transitions, 99 changer transitions 0/572 dead transitions. [2024-06-27 19:01:42,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 572 transitions, 9973 flow [2024-06-27 19:01:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:01:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:01:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-27 19:01:42,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955555555555556 [2024-06-27 19:01:42,561 INFO L175 Difference]: Start difference. First operand has 259 places, 507 transitions, 8035 flow. Second operand 10 states and 223 transitions. [2024-06-27 19:01:42,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 572 transitions, 9973 flow [2024-06-27 19:01:43,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 572 transitions, 9690 flow, removed 125 selfloop flow, removed 3 redundant places. [2024-06-27 19:01:43,947 INFO L231 Difference]: Finished difference. Result has 268 places, 521 transitions, 8350 flow [2024-06-27 19:01:43,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7828, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8350, PETRI_PLACES=268, PETRI_TRANSITIONS=521} [2024-06-27 19:01:43,948 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 217 predicate places. [2024-06-27 19:01:43,948 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 521 transitions, 8350 flow [2024-06-27 19:01:43,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:01:43,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:43,948 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 19:01:43,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:01:43,949 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:43,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1229457871, now seen corresponding path program 3 times [2024-06-27 19:01:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:43,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127306330] [2024-06-27 19:01:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:43,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:44,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127306330] [2024-06-27 19:01:44,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127306330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:44,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:44,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056298044] [2024-06-27 19:01:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:44,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:44,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:44,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 521 transitions, 8350 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:44,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:44,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:44,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:46,796 INFO L124 PetriNetUnfolderBase]: 7938/12124 cut-off events. [2024-06-27 19:01:46,796 INFO L125 PetriNetUnfolderBase]: For 373893/373893 co-relation queries the response was YES. [2024-06-27 19:01:46,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89899 conditions, 12124 events. 7938/12124 cut-off events. For 373893/373893 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 74819 event pairs, 2352 based on Foata normal form. 2/11863 useless extension candidates. Maximal degree in co-relation 89762. Up to 11148 conditions per place. [2024-06-27 19:01:46,948 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 510 selfloop transitions, 42 changer transitions 0/559 dead transitions. [2024-06-27 19:01:46,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 559 transitions, 9837 flow [2024-06-27 19:01:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 19:01:46,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-27 19:01:46,949 INFO L175 Difference]: Start difference. First operand has 268 places, 521 transitions, 8350 flow. Second operand 7 states and 151 transitions. [2024-06-27 19:01:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 559 transitions, 9837 flow [2024-06-27 19:01:48,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 559 transitions, 9633 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 19:01:48,342 INFO L231 Difference]: Finished difference. Result has 269 places, 526 transitions, 8361 flow [2024-06-27 19:01:48,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8146, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8361, PETRI_PLACES=269, PETRI_TRANSITIONS=526} [2024-06-27 19:01:48,343 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 218 predicate places. [2024-06-27 19:01:48,343 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 526 transitions, 8361 flow [2024-06-27 19:01:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:48,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:48,344 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 19:01:48,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:01:48,344 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:48,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1115311891, now seen corresponding path program 4 times [2024-06-27 19:01:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000977649] [2024-06-27 19:01:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:48,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:48,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:48,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000977649] [2024-06-27 19:01:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000977649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:48,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:48,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:48,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161286525] [2024-06-27 19:01:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:48,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:48,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:48,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:48,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:48,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 526 transitions, 8361 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:48,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:48,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:48,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:51,282 INFO L124 PetriNetUnfolderBase]: 7932/12110 cut-off events. [2024-06-27 19:01:51,283 INFO L125 PetriNetUnfolderBase]: For 375714/375714 co-relation queries the response was YES. [2024-06-27 19:01:51,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89023 conditions, 12110 events. 7932/12110 cut-off events. For 375714/375714 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 74645 event pairs, 2378 based on Foata normal form. 2/11851 useless extension candidates. Maximal degree in co-relation 88885. Up to 11237 conditions per place. [2024-06-27 19:01:51,437 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 516 selfloop transitions, 27 changer transitions 0/550 dead transitions. [2024-06-27 19:01:51,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 550 transitions, 9544 flow [2024-06-27 19:01:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:01:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:01:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 19:01:51,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-06-27 19:01:51,439 INFO L175 Difference]: Start difference. First operand has 269 places, 526 transitions, 8361 flow. Second operand 7 states and 143 transitions. [2024-06-27 19:01:51,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 550 transitions, 9544 flow [2024-06-27 19:01:52,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 550 transitions, 9182 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 19:01:52,751 INFO L231 Difference]: Finished difference. Result has 269 places, 526 transitions, 8061 flow [2024-06-27 19:01:52,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7999, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8061, PETRI_PLACES=269, PETRI_TRANSITIONS=526} [2024-06-27 19:01:52,751 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 218 predicate places. [2024-06-27 19:01:52,751 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 526 transitions, 8061 flow [2024-06-27 19:01:52,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:52,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:52,752 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 19:01:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:01:52,752 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:52,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 150266427, now seen corresponding path program 5 times [2024-06-27 19:01:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:52,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665981297] [2024-06-27 19:01:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665981297] [2024-06-27 19:01:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665981297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:53,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:53,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293273989] [2024-06-27 19:01:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:53,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:53,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 526 transitions, 8061 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:53,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:53,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:53,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:01:55,764 INFO L124 PetriNetUnfolderBase]: 7926/12108 cut-off events. [2024-06-27 19:01:55,764 INFO L125 PetriNetUnfolderBase]: For 374362/374362 co-relation queries the response was YES. [2024-06-27 19:01:55,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88161 conditions, 12108 events. 7926/12108 cut-off events. For 374362/374362 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 74808 event pairs, 2357 based on Foata normal form. 2/11847 useless extension candidates. Maximal degree in co-relation 88024. Up to 11201 conditions per place. [2024-06-27 19:01:55,915 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 515 selfloop transitions, 29 changer transitions 0/551 dead transitions. [2024-06-27 19:01:55,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 551 transitions, 9261 flow [2024-06-27 19:01:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:01:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:01:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 19:01:55,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 19:01:55,917 INFO L175 Difference]: Start difference. First operand has 269 places, 526 transitions, 8061 flow. Second operand 6 states and 130 transitions. [2024-06-27 19:01:55,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 551 transitions, 9261 flow [2024-06-27 19:01:57,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 551 transitions, 9093 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 19:01:57,383 INFO L231 Difference]: Finished difference. Result has 269 places, 526 transitions, 7966 flow [2024-06-27 19:01:57,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7893, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7966, PETRI_PLACES=269, PETRI_TRANSITIONS=526} [2024-06-27 19:01:57,384 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 218 predicate places. [2024-06-27 19:01:57,384 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 526 transitions, 7966 flow [2024-06-27 19:01:57,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:57,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:01:57,385 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 19:01:57,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:01:57,385 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:01:57,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:01:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash -50309463, now seen corresponding path program 6 times [2024-06-27 19:01:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:01:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309862115] [2024-06-27 19:01:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:01:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:01:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:01:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:01:57,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:01:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309862115] [2024-06-27 19:01:57,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309862115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:01:57,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:01:57,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:01:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142556383] [2024-06-27 19:01:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:01:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:01:57,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:01:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:01:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:01:57,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:01:57,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 526 transitions, 7966 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:01:57,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:01:57,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:01:57,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:00,463 INFO L124 PetriNetUnfolderBase]: 7910/12127 cut-off events. [2024-06-27 19:02:00,464 INFO L125 PetriNetUnfolderBase]: For 375692/375692 co-relation queries the response was YES. [2024-06-27 19:02:00,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87769 conditions, 12127 events. 7910/12127 cut-off events. For 375692/375692 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 75639 event pairs, 1753 based on Foata normal form. 4/11851 useless extension candidates. Maximal degree in co-relation 87632. Up to 10711 conditions per place. [2024-06-27 19:02:00,595 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 483 selfloop transitions, 79 changer transitions 0/569 dead transitions. [2024-06-27 19:02:00,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 569 transitions, 9366 flow [2024-06-27 19:02:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:02:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:02:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 19:02:00,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-27 19:02:00,610 INFO L175 Difference]: Start difference. First operand has 269 places, 526 transitions, 7966 flow. Second operand 7 states and 160 transitions. [2024-06-27 19:02:00,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 569 transitions, 9366 flow [2024-06-27 19:02:01,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 569 transitions, 9274 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:01,962 INFO L231 Difference]: Finished difference. Result has 271 places, 526 transitions, 8066 flow [2024-06-27 19:02:01,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7874, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8066, PETRI_PLACES=271, PETRI_TRANSITIONS=526} [2024-06-27 19:02:01,962 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2024-06-27 19:02:01,963 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 526 transitions, 8066 flow [2024-06-27 19:02:01,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:02:01,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:01,963 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 19:02:01,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:02:01,963 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:01,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1007141761, now seen corresponding path program 4 times [2024-06-27 19:02:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502019260] [2024-06-27 19:02:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:02,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:02,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502019260] [2024-06-27 19:02:02,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502019260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:02,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:02,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163332307] [2024-06-27 19:02:02,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:02,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:02,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 526 transitions, 8066 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:02,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:02,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:02,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:05,175 INFO L124 PetriNetUnfolderBase]: 8173/12432 cut-off events. [2024-06-27 19:02:05,175 INFO L125 PetriNetUnfolderBase]: For 412669/412669 co-relation queries the response was YES. [2024-06-27 19:02:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91868 conditions, 12432 events. 8173/12432 cut-off events. For 412669/412669 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 76506 event pairs, 2362 based on Foata normal form. 6/12177 useless extension candidates. Maximal degree in co-relation 91730. Up to 11205 conditions per place. [2024-06-27 19:02:05,305 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 507 selfloop transitions, 68 changer transitions 0/582 dead transitions. [2024-06-27 19:02:05,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 582 transitions, 9773 flow [2024-06-27 19:02:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:02:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:02:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-27 19:02:05,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47901234567901235 [2024-06-27 19:02:05,307 INFO L175 Difference]: Start difference. First operand has 271 places, 526 transitions, 8066 flow. Second operand 9 states and 194 transitions. [2024-06-27 19:02:05,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 582 transitions, 9773 flow [2024-06-27 19:02:06,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 582 transitions, 9560 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:02:06,594 INFO L231 Difference]: Finished difference. Result has 276 places, 544 transitions, 8356 flow [2024-06-27 19:02:06,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7855, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8356, PETRI_PLACES=276, PETRI_TRANSITIONS=544} [2024-06-27 19:02:06,595 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 225 predicate places. [2024-06-27 19:02:06,595 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 544 transitions, 8356 flow [2024-06-27 19:02:06,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:06,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:06,596 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 19:02:06,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:02:06,596 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:06,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1006696849, now seen corresponding path program 1 times [2024-06-27 19:02:06,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:06,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671707714] [2024-06-27 19:02:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:06,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671707714] [2024-06-27 19:02:07,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671707714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:07,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571524734] [2024-06-27 19:02:07,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:07,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:07,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:07,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 544 transitions, 8356 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:07,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:07,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:09,723 INFO L124 PetriNetUnfolderBase]: 8170/12425 cut-off events. [2024-06-27 19:02:09,723 INFO L125 PetriNetUnfolderBase]: For 413999/413999 co-relation queries the response was YES. [2024-06-27 19:02:09,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93761 conditions, 12425 events. 8170/12425 cut-off events. For 413999/413999 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 76491 event pairs, 2388 based on Foata normal form. 1/12166 useless extension candidates. Maximal degree in co-relation 93620. Up to 11554 conditions per place. [2024-06-27 19:02:09,894 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 528 selfloop transitions, 30 changer transitions 0/565 dead transitions. [2024-06-27 19:02:09,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 565 transitions, 9626 flow [2024-06-27 19:02:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:02:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:02:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-27 19:02:09,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 19:02:09,895 INFO L175 Difference]: Start difference. First operand has 276 places, 544 transitions, 8356 flow. Second operand 6 states and 124 transitions. [2024-06-27 19:02:09,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 565 transitions, 9626 flow [2024-06-27 19:02:11,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 565 transitions, 9367 flow, removed 115 selfloop flow, removed 3 redundant places. [2024-06-27 19:02:11,484 INFO L231 Difference]: Finished difference. Result has 279 places, 547 transitions, 8253 flow [2024-06-27 19:02:11,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8119, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8253, PETRI_PLACES=279, PETRI_TRANSITIONS=547} [2024-06-27 19:02:11,485 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 228 predicate places. [2024-06-27 19:02:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 547 transitions, 8253 flow [2024-06-27 19:02:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:11,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:11,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:02:11,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:02:11,485 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:11,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1020010481, now seen corresponding path program 3 times [2024-06-27 19:02:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:11,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976036371] [2024-06-27 19:02:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976036371] [2024-06-27 19:02:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976036371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:12,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973894997] [2024-06-27 19:02:12,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:12,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:12,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:12,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 547 transitions, 8253 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:12,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:12,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:12,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:14,804 INFO L124 PetriNetUnfolderBase]: 8583/12972 cut-off events. [2024-06-27 19:02:14,805 INFO L125 PetriNetUnfolderBase]: For 451415/451434 co-relation queries the response was YES. [2024-06-27 19:02:14,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98445 conditions, 12972 events. 8583/12972 cut-off events. For 451415/451434 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 80061 event pairs, 1741 based on Foata normal form. 26/12736 useless extension candidates. Maximal degree in co-relation 98302. Up to 10661 conditions per place. [2024-06-27 19:02:14,968 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 478 selfloop transitions, 146 changer transitions 0/631 dead transitions. [2024-06-27 19:02:14,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 631 transitions, 10511 flow [2024-06-27 19:02:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 19:02:14,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638888888888889 [2024-06-27 19:02:14,970 INFO L175 Difference]: Start difference. First operand has 279 places, 547 transitions, 8253 flow. Second operand 8 states and 203 transitions. [2024-06-27 19:02:14,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 631 transitions, 10511 flow [2024-06-27 19:02:16,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 631 transitions, 10439 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:02:16,807 INFO L231 Difference]: Finished difference. Result has 285 places, 569 transitions, 9148 flow [2024-06-27 19:02:16,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8185, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9148, PETRI_PLACES=285, PETRI_TRANSITIONS=569} [2024-06-27 19:02:16,808 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 234 predicate places. [2024-06-27 19:02:16,808 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 569 transitions, 9148 flow [2024-06-27 19:02:16,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:16,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:16,808 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 19:02:16,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:02:16,809 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:16,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash -50313121, now seen corresponding path program 5 times [2024-06-27 19:02:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:16,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247049663] [2024-06-27 19:02:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:17,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:17,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247049663] [2024-06-27 19:02:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247049663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:17,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:17,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829897391] [2024-06-27 19:02:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:17,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:17,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:17,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:17,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 569 transitions, 9148 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:17,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:17,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:17,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:20,856 INFO L124 PetriNetUnfolderBase]: 8843/13326 cut-off events. [2024-06-27 19:02:20,856 INFO L125 PetriNetUnfolderBase]: For 486711/486730 co-relation queries the response was YES. [2024-06-27 19:02:20,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105148 conditions, 13326 events. 8843/13326 cut-off events. For 486711/486730 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 82242 event pairs, 1701 based on Foata normal form. 28/13090 useless extension candidates. Maximal degree in co-relation 105002. Up to 10618 conditions per place. [2024-06-27 19:02:21,001 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 478 selfloop transitions, 155 changer transitions 0/640 dead transitions. [2024-06-27 19:02:21,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 640 transitions, 11294 flow [2024-06-27 19:02:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 19:02:21,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 19:02:21,003 INFO L175 Difference]: Start difference. First operand has 285 places, 569 transitions, 9148 flow. Second operand 8 states and 198 transitions. [2024-06-27 19:02:21,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 640 transitions, 11294 flow [2024-06-27 19:02:23,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 640 transitions, 11069 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-06-27 19:02:23,284 INFO L231 Difference]: Finished difference. Result has 292 places, 586 transitions, 9825 flow [2024-06-27 19:02:23,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8945, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9825, PETRI_PLACES=292, PETRI_TRANSITIONS=586} [2024-06-27 19:02:23,285 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 241 predicate places. [2024-06-27 19:02:23,285 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 586 transitions, 9825 flow [2024-06-27 19:02:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:23,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:23,286 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 19:02:23,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:02:23,286 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:23,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1019999941, now seen corresponding path program 6 times [2024-06-27 19:02:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:23,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604169993] [2024-06-27 19:02:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604169993] [2024-06-27 19:02:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604169993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216717334] [2024-06-27 19:02:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:23,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:23,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 586 transitions, 9825 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:23,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:23,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:23,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:27,427 INFO L124 PetriNetUnfolderBase]: 9080/13648 cut-off events. [2024-06-27 19:02:27,428 INFO L125 PetriNetUnfolderBase]: For 515545/515545 co-relation queries the response was YES. [2024-06-27 19:02:27,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110939 conditions, 13648 events. 9080/13648 cut-off events. For 515545/515545 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 84278 event pairs, 1822 based on Foata normal form. 6/13390 useless extension candidates. Maximal degree in co-relation 110789. Up to 10755 conditions per place. [2024-06-27 19:02:27,607 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 495 selfloop transitions, 146 changer transitions 0/648 dead transitions. [2024-06-27 19:02:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 648 transitions, 11959 flow [2024-06-27 19:02:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 19:02:27,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 19:02:27,609 INFO L175 Difference]: Start difference. First operand has 292 places, 586 transitions, 9825 flow. Second operand 8 states and 190 transitions. [2024-06-27 19:02:27,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 648 transitions, 11959 flow [2024-06-27 19:02:30,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 648 transitions, 11588 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-06-27 19:02:30,074 INFO L231 Difference]: Finished difference. Result has 298 places, 603 transitions, 10325 flow [2024-06-27 19:02:30,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9476, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10325, PETRI_PLACES=298, PETRI_TRANSITIONS=603} [2024-06-27 19:02:30,075 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 247 predicate places. [2024-06-27 19:02:30,076 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 603 transitions, 10325 flow [2024-06-27 19:02:30,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:30,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:30,076 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 19:02:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:02:30,076 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:30,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:30,077 INFO L85 PathProgramCache]: Analyzing trace with hash 523861474, now seen corresponding path program 1 times [2024-06-27 19:02:30,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:30,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307597742] [2024-06-27 19:02:30,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:30,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:30,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:30,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307597742] [2024-06-27 19:02:30,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307597742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:30,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:30,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043163227] [2024-06-27 19:02:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:30,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:30,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:30,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:30,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 603 transitions, 10325 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:30,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:30,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:30,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:34,538 INFO L124 PetriNetUnfolderBase]: 9113/13711 cut-off events. [2024-06-27 19:02:34,538 INFO L125 PetriNetUnfolderBase]: For 527659/527659 co-relation queries the response was YES. [2024-06-27 19:02:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112002 conditions, 13711 events. 9113/13711 cut-off events. For 527659/527659 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 84415 event pairs, 2487 based on Foata normal form. 2/13446 useless extension candidates. Maximal degree in co-relation 111849. Up to 12644 conditions per place. [2024-06-27 19:02:34,704 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 581 selfloop transitions, 55 changer transitions 0/643 dead transitions. [2024-06-27 19:02:34,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 643 transitions, 11977 flow [2024-06-27 19:02:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:02:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:02:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:02:34,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 19:02:34,705 INFO L175 Difference]: Start difference. First operand has 298 places, 603 transitions, 10325 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:02:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 643 transitions, 11977 flow [2024-06-27 19:02:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 643 transitions, 11638 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-06-27 19:02:37,080 INFO L231 Difference]: Finished difference. Result has 301 places, 607 transitions, 10201 flow [2024-06-27 19:02:37,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9986, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10201, PETRI_PLACES=301, PETRI_TRANSITIONS=607} [2024-06-27 19:02:37,081 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 250 predicate places. [2024-06-27 19:02:37,081 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 607 transitions, 10201 flow [2024-06-27 19:02:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:37,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:37,082 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 19:02:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:02:37,082 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:37,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1118099504, now seen corresponding path program 2 times [2024-06-27 19:02:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123783990] [2024-06-27 19:02:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:37,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:37,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123783990] [2024-06-27 19:02:37,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123783990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:37,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:37,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:37,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290419731] [2024-06-27 19:02:37,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:37,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:37,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:37,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:37,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 607 transitions, 10201 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:37,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:37,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:37,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:41,591 INFO L124 PetriNetUnfolderBase]: 9146/13764 cut-off events. [2024-06-27 19:02:41,592 INFO L125 PetriNetUnfolderBase]: For 529747/529747 co-relation queries the response was YES. [2024-06-27 19:02:41,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110523 conditions, 13764 events. 9146/13764 cut-off events. For 529747/529747 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 84886 event pairs, 2611 based on Foata normal form. 2/13497 useless extension candidates. Maximal degree in co-relation 110369. Up to 12785 conditions per place. [2024-06-27 19:02:41,750 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 586 selfloop transitions, 47 changer transitions 0/640 dead transitions. [2024-06-27 19:02:41,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 640 transitions, 11667 flow [2024-06-27 19:02:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:02:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:02:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 19:02:41,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 19:02:41,751 INFO L175 Difference]: Start difference. First operand has 301 places, 607 transitions, 10201 flow. Second operand 7 states and 150 transitions. [2024-06-27 19:02:41,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 640 transitions, 11667 flow [2024-06-27 19:02:44,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 640 transitions, 11539 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 19:02:44,104 INFO L231 Difference]: Finished difference. Result has 305 places, 609 transitions, 10227 flow [2024-06-27 19:02:44,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10095, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10227, PETRI_PLACES=305, PETRI_TRANSITIONS=609} [2024-06-27 19:02:44,106 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 254 predicate places. [2024-06-27 19:02:44,106 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 609 transitions, 10227 flow [2024-06-27 19:02:44,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:44,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:44,106 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 19:02:44,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:02:44,106 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:44,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1013361136, now seen corresponding path program 3 times [2024-06-27 19:02:44,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:44,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881459794] [2024-06-27 19:02:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:44,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:44,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881459794] [2024-06-27 19:02:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881459794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:44,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:44,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993115192] [2024-06-27 19:02:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:44,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:44,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:45,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:45,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 609 transitions, 10227 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:45,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:45,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:45,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:48,517 INFO L124 PetriNetUnfolderBase]: 9141/13766 cut-off events. [2024-06-27 19:02:48,517 INFO L125 PetriNetUnfolderBase]: For 534867/534867 co-relation queries the response was YES. [2024-06-27 19:02:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110237 conditions, 13766 events. 9141/13766 cut-off events. For 534867/534867 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 84925 event pairs, 2520 based on Foata normal form. 2/13496 useless extension candidates. Maximal degree in co-relation 110081. Up to 12766 conditions per place. [2024-06-27 19:02:48,695 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 581 selfloop transitions, 49 changer transitions 0/637 dead transitions. [2024-06-27 19:02:48,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 637 transitions, 11613 flow [2024-06-27 19:02:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:02:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:02:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 19:02:48,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-06-27 19:02:48,709 INFO L175 Difference]: Start difference. First operand has 305 places, 609 transitions, 10227 flow. Second operand 6 states and 134 transitions. [2024-06-27 19:02:48,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 637 transitions, 11613 flow [2024-06-27 19:02:51,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 637 transitions, 11497 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:51,242 INFO L231 Difference]: Finished difference. Result has 306 places, 609 transitions, 10228 flow [2024-06-27 19:02:51,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10111, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10228, PETRI_PLACES=306, PETRI_TRANSITIONS=609} [2024-06-27 19:02:51,244 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2024-06-27 19:02:51,244 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 609 transitions, 10228 flow [2024-06-27 19:02:51,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:51,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:51,244 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 19:02:51,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:02:51,244 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:51,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1467470456, now seen corresponding path program 1 times [2024-06-27 19:02:51,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:51,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567761989] [2024-06-27 19:02:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567761989] [2024-06-27 19:02:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567761989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707723261] [2024-06-27 19:02:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:51,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:51,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 609 transitions, 10228 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:51,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:51,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:02:55,443 INFO L124 PetriNetUnfolderBase]: 9135/13800 cut-off events. [2024-06-27 19:02:55,444 INFO L125 PetriNetUnfolderBase]: For 537208/537230 co-relation queries the response was YES. [2024-06-27 19:02:55,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110210 conditions, 13800 events. 9135/13800 cut-off events. For 537208/537230 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 86154 event pairs, 1802 based on Foata normal form. 20/13532 useless extension candidates. Maximal degree in co-relation 110053. Up to 11924 conditions per place. [2024-06-27 19:02:55,627 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 528 selfloop transitions, 132 changer transitions 0/667 dead transitions. [2024-06-27 19:02:55,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 667 transitions, 12158 flow [2024-06-27 19:02:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:02:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:02:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 19:02:55,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 19:02:55,628 INFO L175 Difference]: Start difference. First operand has 306 places, 609 transitions, 10228 flow. Second operand 8 states and 185 transitions. [2024-06-27 19:02:55,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 667 transitions, 12158 flow [2024-06-27 19:02:57,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 667 transitions, 12030 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:02:57,938 INFO L231 Difference]: Finished difference. Result has 309 places, 609 transitions, 10372 flow [2024-06-27 19:02:57,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10100, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10372, PETRI_PLACES=309, PETRI_TRANSITIONS=609} [2024-06-27 19:02:57,939 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 258 predicate places. [2024-06-27 19:02:57,939 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 609 transitions, 10372 flow [2024-06-27 19:02:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:57,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:02:57,939 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 19:02:57,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:02:57,939 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:02:57,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:02:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash -707149736, now seen corresponding path program 2 times [2024-06-27 19:02:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:02:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916030187] [2024-06-27 19:02:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:02:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:02:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:02:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:02:58,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:02:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916030187] [2024-06-27 19:02:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916030187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:02:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:02:58,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:02:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226821007] [2024-06-27 19:02:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:02:58,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:02:58,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:02:58,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:02:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:02:58,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-27 19:02:58,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 609 transitions, 10372 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:02:58,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:02:58,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-27 19:02:58,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:03:02,170 INFO L124 PetriNetUnfolderBase]: 9175/13856 cut-off events. [2024-06-27 19:03:02,171 INFO L125 PetriNetUnfolderBase]: For 552473/552475 co-relation queries the response was YES. [2024-06-27 19:03:02,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111631 conditions, 13856 events. 9175/13856 cut-off events. For 552473/552475 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 86331 event pairs, 1822 based on Foata normal form. 4/13571 useless extension candidates. Maximal degree in co-relation 111473. Up to 11959 conditions per place. [2024-06-27 19:03:02,358 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 539 selfloop transitions, 126 changer transitions 0/672 dead transitions. [2024-06-27 19:03:02,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 672 transitions, 12518 flow [2024-06-27 19:03:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:03:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:03:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 19:03:02,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-27 19:03:02,359 INFO L175 Difference]: Start difference. First operand has 309 places, 609 transitions, 10372 flow. Second operand 8 states and 182 transitions. [2024-06-27 19:03:02,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 672 transitions, 12518 flow