./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe013_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/safe013_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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe013_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 18:55:41,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:55:41,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:55:41,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:55:41,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:55:41,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:55:41,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:55:41,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:55:41,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:55:41,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:55:41,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:55:41,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:55:41,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:55:41,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:55:41,705 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:55:41,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:55:41,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:55:41,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:55:41,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:55:41,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:55:41,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:55:41,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:55:41,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:55:41,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:55:41,708 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:55:41,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:55:41,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:55:41,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:55:41,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:55:41,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:55:41,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:55:41,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:55:41,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:55:41,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:55:41,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:55:41,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:55:41,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:55:41,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:55:41,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:55:41,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:55:41,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:55:41,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:55:41,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:55:41,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:55:41,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:55:42,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:55:42,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:55:42,020 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:55:42,021 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:55:42,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 18:55:42,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:55:42,212 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:55:42,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 18:55:43,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:55:43,622 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:55:43,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 18:55:43,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2231f831/5ba8d170b97c4356888af2ce06fdf056/FLAGcff92c022 [2024-06-27 18:55:43,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2231f831/5ba8d170b97c4356888af2ce06fdf056 [2024-06-27 18:55:43,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:55:43,670 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:55:43,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:55:43,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:55:43,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:55:43,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:55:42" (1/2) ... [2024-06-27 18:55:43,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcd85d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:55:43, skipping insertion in model container [2024-06-27 18:55:43,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:55:42" (1/2) ... [2024-06-27 18:55:43,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cc9f6fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:55:43, skipping insertion in model container [2024-06-27 18:55:43,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:55:43" (2/2) ... [2024-06-27 18:55:43,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcd85d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:43, skipping insertion in model container [2024-06-27 18:55:43,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:55:43" (2/2) ... [2024-06-27 18:55:43,682 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:55:43,775 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:55:43,776 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-27 18:55:43,776 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-27 18:55:43,776 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-27 18:55:43,777 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:55:43,777 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 18:55:43,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:55:43,996 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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2024-06-27 18:55:44,183 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:55:44,192 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:55:44,232 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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:55:44,356 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:55:44,402 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:55:44,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44 WrapperNode [2024-06-27 18:55:44,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:55:44,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:55:44,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:55:44,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:55:44,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,458 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 18:55:44,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:55:44,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:55:44,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:55:44,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:55:44,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,493 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 18:55:44,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:55:44,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:55:44,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:55:44,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:55:44,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (1/1) ... [2024-06-27 18:55:44,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:55:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:55:44,556 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 18:55:44,565 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 18:55:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:55:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:55:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:55:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:55:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:55:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:55:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:55:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:55:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:55:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:55:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:55:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:55:44,613 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 18:55:44,744 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:55:44,771 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:55:45,215 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:55:45,216 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:55:45,377 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:55:45,378 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:55:45,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:55:45 BoogieIcfgContainer [2024-06-27 18:55:45,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:55:45,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:55:45,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:55:45,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:55:45,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:55:42" (1/4) ... [2024-06-27 18:55:45,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bb5e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:55:45, skipping insertion in model container [2024-06-27 18:55:45,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:55:43" (2/4) ... [2024-06-27 18:55:45,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bb5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:55:45, skipping insertion in model container [2024-06-27 18:55:45,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:55:44" (3/4) ... [2024-06-27 18:55:45,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bb5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:55:45, skipping insertion in model container [2024-06-27 18:55:45,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:55:45" (4/4) ... [2024-06-27 18:55:45,390 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 18:55:45,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:55:45,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:55:45,408 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:55:45,454 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:55:45,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:55:45,526 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:55:45,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:55:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:55:45,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:55:45,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:55:45,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:55:45,561 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;@4ff53795, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:55:45,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:55:45,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:55:45,568 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:55:45,568 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:55:45,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:45,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:55:45,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:45,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash 345514193, now seen corresponding path program 1 times [2024-06-27 18:55:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:45,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745494048] [2024-06-27 18:55:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:46,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745494048] [2024-06-27 18:55:46,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745494048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:46,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:46,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:55:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843939423] [2024-06-27 18:55:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:46,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:55:46,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:55:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:55:46,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:55:46,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:46,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:46,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:55:46,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:47,382 INFO L124 PetriNetUnfolderBase]: 3076/5182 cut-off events. [2024-06-27 18:55:47,383 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 18:55:47,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9728 conditions, 5182 events. 3076/5182 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33933 event pairs, 2454 based on Foata normal form. 176/4945 useless extension candidates. Maximal degree in co-relation 9716. Up to 4447 conditions per place. [2024-06-27 18:55:47,423 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:55:47,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-27 18:55:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:55:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:55:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 18:55:47,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-27 18:55:47,436 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-27 18:55:47,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-27 18:55:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:47,445 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:55:47,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:55:47,450 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:55:47,450 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:55:47,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:47,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:47,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:47,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:55:47,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:47,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:47,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1326691568, now seen corresponding path program 1 times [2024-06-27 18:55:47,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:47,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533530240] [2024-06-27 18:55:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:47,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:48,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533530240] [2024-06-27 18:55:48,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533530240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:48,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:55:48,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988514625] [2024-06-27 18:55:48,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:48,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:55:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:55:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:55:48,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:55:48,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 18:55:48,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:48,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:55:48,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:48,829 INFO L124 PetriNetUnfolderBase]: 3164/4662 cut-off events. [2024-06-27 18:55:48,829 INFO L125 PetriNetUnfolderBase]: For 717/732 co-relation queries the response was YES. [2024-06-27 18:55:48,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10510 conditions, 4662 events. 3164/4662 cut-off events. For 717/732 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25803 event pairs, 1227 based on Foata normal form. 13/4444 useless extension candidates. Maximal degree in co-relation 10498. Up to 4360 conditions per place. [2024-06-27 18:55:48,853 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 57 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-27 18:55:48,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 367 flow [2024-06-27 18:55:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:55:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:55:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-06-27 18:55:48,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7180851063829787 [2024-06-27 18:55:48,856 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 135 transitions. [2024-06-27 18:55:48,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 367 flow [2024-06-27 18:55:48,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:55:48,859 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 219 flow [2024-06-27 18:55:48,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-06-27 18:55:48,859 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-27 18:55:48,860 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 219 flow [2024-06-27 18:55:48,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 18:55:48,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:48,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:48,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:55:48,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:48,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:48,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1822895174, now seen corresponding path program 1 times [2024-06-27 18:55:48,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:48,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449766251] [2024-06-27 18:55:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:48,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:48,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449766251] [2024-06-27 18:55:48,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449766251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:48,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:48,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:55:48,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007988520] [2024-06-27 18:55:48,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:48,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:55:48,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:55:48,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:55:48,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 18:55:48,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:48,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:48,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 18:55:48,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:49,263 INFO L124 PetriNetUnfolderBase]: 1155/2292 cut-off events. [2024-06-27 18:55:49,263 INFO L125 PetriNetUnfolderBase]: For 773/860 co-relation queries the response was YES. [2024-06-27 18:55:49,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 2292 events. 1155/2292 cut-off events. For 773/860 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16081 event pairs, 485 based on Foata normal form. 7/2123 useless extension candidates. Maximal degree in co-relation 4840. Up to 1435 conditions per place. [2024-06-27 18:55:49,281 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-27 18:55:49,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 288 flow [2024-06-27 18:55:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:55:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:55:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 18:55:49,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-27 18:55:49,285 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 219 flow. Second operand 3 states and 108 transitions. [2024-06-27 18:55:49,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 288 flow [2024-06-27 18:55:49,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 284 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:55:49,289 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 198 flow [2024-06-27 18:55:49,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:55:49,289 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-06-27 18:55:49,290 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 198 flow [2024-06-27 18:55:49,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:49,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:49,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:49,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:55:49,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:49,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 544364297, now seen corresponding path program 1 times [2024-06-27 18:55:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:49,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853345884] [2024-06-27 18:55:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:49,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:50,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:50,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853345884] [2024-06-27 18:55:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853345884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:55:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699710025] [2024-06-27 18:55:50,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:55:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:55:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:55:50,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:55:50,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:50,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:50,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:55:50,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:50,766 INFO L124 PetriNetUnfolderBase]: 3056/4867 cut-off events. [2024-06-27 18:55:50,766 INFO L125 PetriNetUnfolderBase]: For 3181/3194 co-relation queries the response was YES. [2024-06-27 18:55:50,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12169 conditions, 4867 events. 3056/4867 cut-off events. For 3181/3194 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 29522 event pairs, 1931 based on Foata normal form. 8/4746 useless extension candidates. Maximal degree in co-relation 12151. Up to 4395 conditions per place. [2024-06-27 18:55:50,797 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 56 selfloop transitions, 9 changer transitions 2/78 dead transitions. [2024-06-27 18:55:50,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 411 flow [2024-06-27 18:55:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:55:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:55:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 18:55:50,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 18:55:50,800 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 198 flow. Second operand 5 states and 128 transitions. [2024-06-27 18:55:50,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 411 flow [2024-06-27 18:55:50,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:55:50,804 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 266 flow [2024-06-27 18:55:50,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 18:55:50,805 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-27 18:55:50,805 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 266 flow [2024-06-27 18:55:50,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:50,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:50,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:50,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:55:50,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:50,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2057416402, now seen corresponding path program 1 times [2024-06-27 18:55:50,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:50,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7546779] [2024-06-27 18:55:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:50,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:51,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:51,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7546779] [2024-06-27 18:55:51,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7546779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:51,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:51,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:55:51,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426482962] [2024-06-27 18:55:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:51,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:55:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:55:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:55:51,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:55:51,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:51,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:51,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:55:51,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:52,684 INFO L124 PetriNetUnfolderBase]: 2408/4036 cut-off events. [2024-06-27 18:55:52,684 INFO L125 PetriNetUnfolderBase]: For 3647/3674 co-relation queries the response was YES. [2024-06-27 18:55:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 4036 events. 2408/4036 cut-off events. For 3647/3674 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 25017 event pairs, 781 based on Foata normal form. 28/3914 useless extension candidates. Maximal degree in co-relation 10674. Up to 3160 conditions per place. [2024-06-27 18:55:52,711 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 79 selfloop transitions, 19 changer transitions 0/111 dead transitions. [2024-06-27 18:55:52,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 614 flow [2024-06-27 18:55:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 18:55:52,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:55:52,713 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 266 flow. Second operand 6 states and 188 transitions. [2024-06-27 18:55:52,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 614 flow [2024-06-27 18:55:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 597 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:55:52,718 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 334 flow [2024-06-27 18:55:52,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 18:55:52,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-06-27 18:55:52,719 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 334 flow [2024-06-27 18:55:52,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:52,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:52,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:52,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:55:52,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:52,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash -342111119, now seen corresponding path program 1 times [2024-06-27 18:55:52,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:52,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851645515] [2024-06-27 18:55:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:53,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851645515] [2024-06-27 18:55:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851645515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:53,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:55:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875156086] [2024-06-27 18:55:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:55:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:53,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:55:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:55:53,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:55:53,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 334 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:53,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:53,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:55:53,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:54,312 INFO L124 PetriNetUnfolderBase]: 3319/5363 cut-off events. [2024-06-27 18:55:54,312 INFO L125 PetriNetUnfolderBase]: For 7068/7068 co-relation queries the response was YES. [2024-06-27 18:55:54,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15270 conditions, 5363 events. 3319/5363 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33468 event pairs, 1518 based on Foata normal form. 2/5234 useless extension candidates. Maximal degree in co-relation 15247. Up to 4757 conditions per place. [2024-06-27 18:55:54,346 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 77 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-27 18:55:54,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 628 flow [2024-06-27 18:55:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:55:54,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 18:55:54,348 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 334 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:55:54,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 628 flow [2024-06-27 18:55:54,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 584 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:54,355 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 401 flow [2024-06-27 18:55:54,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-27 18:55:54,356 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-27 18:55:54,356 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 401 flow [2024-06-27 18:55:54,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:54,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:54,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:54,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:55:54,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:54,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2022214468, now seen corresponding path program 1 times [2024-06-27 18:55:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140009098] [2024-06-27 18:55:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140009098] [2024-06-27 18:55:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140009098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:55:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572057690] [2024-06-27 18:55:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:55:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:55:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:55:55,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:55:55,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:55,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:55,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:55:55,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:55,888 INFO L124 PetriNetUnfolderBase]: 3294/5587 cut-off events. [2024-06-27 18:55:55,889 INFO L125 PetriNetUnfolderBase]: For 9667/9713 co-relation queries the response was YES. [2024-06-27 18:55:55,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16329 conditions, 5587 events. 3294/5587 cut-off events. For 9667/9713 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 36736 event pairs, 1325 based on Foata normal form. 31/5417 useless extension candidates. Maximal degree in co-relation 16302. Up to 4615 conditions per place. [2024-06-27 18:55:55,923 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 81 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2024-06-27 18:55:55,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 117 transitions, 761 flow [2024-06-27 18:55:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 18:55:55,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-27 18:55:55,925 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 401 flow. Second operand 6 states and 159 transitions. [2024-06-27 18:55:55,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 117 transitions, 761 flow [2024-06-27 18:55:55,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 753 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:55:55,933 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 567 flow [2024-06-27 18:55:55,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=567, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-06-27 18:55:55,934 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-27 18:55:55,934 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 567 flow [2024-06-27 18:55:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:55,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:55:55,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:55,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:55,935 INFO L85 PathProgramCache]: Analyzing trace with hash -851882008, now seen corresponding path program 2 times [2024-06-27 18:55:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422988530] [2024-06-27 18:55:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:56,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:56,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422988530] [2024-06-27 18:55:56,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422988530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:56,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:56,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:55:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342655759] [2024-06-27 18:55:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:55:56,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:55:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:55:56,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:55:56,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:56,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:56,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:55:56,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:57,435 INFO L124 PetriNetUnfolderBase]: 3565/6001 cut-off events. [2024-06-27 18:55:57,436 INFO L125 PetriNetUnfolderBase]: For 15418/15451 co-relation queries the response was YES. [2024-06-27 18:55:57,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20577 conditions, 6001 events. 3565/6001 cut-off events. For 15418/15451 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39611 event pairs, 1290 based on Foata normal form. 20/5803 useless extension candidates. Maximal degree in co-relation 20545. Up to 4722 conditions per place. [2024-06-27 18:55:57,483 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 84 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2024-06-27 18:55:57,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 973 flow [2024-06-27 18:55:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 18:55:57,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709219858156028 [2024-06-27 18:55:57,485 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 567 flow. Second operand 6 states and 161 transitions. [2024-06-27 18:55:57,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 973 flow [2024-06-27 18:55:57,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 937 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:55:57,498 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 684 flow [2024-06-27 18:55:57,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=82, PETRI_TRANSITIONS=96} [2024-06-27 18:55:57,500 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-27 18:55:57,500 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 684 flow [2024-06-27 18:55:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:57,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:57,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:57,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:55:57,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:57,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash -851872088, now seen corresponding path program 1 times [2024-06-27 18:55:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633330109] [2024-06-27 18:55:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:58,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633330109] [2024-06-27 18:55:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633330109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:58,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:55:58,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367582020] [2024-06-27 18:55:58,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:58,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:55:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:58,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:55:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:55:58,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:55:58,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 684 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:58,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:58,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:55:58,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:59,410 INFO L124 PetriNetUnfolderBase]: 3683/6177 cut-off events. [2024-06-27 18:55:59,410 INFO L125 PetriNetUnfolderBase]: For 18914/18914 co-relation queries the response was YES. [2024-06-27 18:55:59,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22144 conditions, 6177 events. 3683/6177 cut-off events. For 18914/18914 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40516 event pairs, 1470 based on Foata normal form. 2/5969 useless extension candidates. Maximal degree in co-relation 22109. Up to 5238 conditions per place. [2024-06-27 18:55:59,456 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 107 selfloop transitions, 15 changer transitions 0/132 dead transitions. [2024-06-27 18:55:59,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 1040 flow [2024-06-27 18:55:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:55:59,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 18:55:59,458 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 684 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:55:59,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 1040 flow [2024-06-27 18:55:59,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 132 transitions, 997 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 18:55:59,479 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 703 flow [2024-06-27 18:55:59,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-06-27 18:55:59,481 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-06-27 18:55:59,481 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 703 flow [2024-06-27 18:55:59,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:59,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:59,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:55:59,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:59,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -374012432, now seen corresponding path program 1 times [2024-06-27 18:55:59,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:59,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437479510] [2024-06-27 18:55:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437479510] [2024-06-27 18:56:00,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437479510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:00,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:00,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426566607] [2024-06-27 18:56:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:00,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:00,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:00,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 703 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:00,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:00,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:00,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:01,032 INFO L124 PetriNetUnfolderBase]: 3729/6046 cut-off events. [2024-06-27 18:56:01,033 INFO L125 PetriNetUnfolderBase]: For 20606/20606 co-relation queries the response was YES. [2024-06-27 18:56:01,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22805 conditions, 6046 events. 3729/6046 cut-off events. For 20606/20606 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 38192 event pairs, 1415 based on Foata normal form. 4/5898 useless extension candidates. Maximal degree in co-relation 22768. Up to 5257 conditions per place. [2024-06-27 18:56:01,075 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 119 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2024-06-27 18:56:01,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1146 flow [2024-06-27 18:56:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:56:01,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 18:56:01,077 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 703 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:56:01,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 145 transitions, 1146 flow [2024-06-27 18:56:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1108 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:01,095 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 799 flow [2024-06-27 18:56:01,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=799, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2024-06-27 18:56:01,095 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2024-06-27 18:56:01,096 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 799 flow [2024-06-27 18:56:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:01,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:01,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:56:01,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:01,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash -638536954, now seen corresponding path program 2 times [2024-06-27 18:56:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231050324] [2024-06-27 18:56:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:01,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231050324] [2024-06-27 18:56:01,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231050324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:01,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198027622] [2024-06-27 18:56:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:01,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:01,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 799 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:01,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:01,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:01,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:02,631 INFO L124 PetriNetUnfolderBase]: 3808/6341 cut-off events. [2024-06-27 18:56:02,631 INFO L125 PetriNetUnfolderBase]: For 24566/24566 co-relation queries the response was YES. [2024-06-27 18:56:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24496 conditions, 6341 events. 3808/6341 cut-off events. For 24566/24566 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 41074 event pairs, 1363 based on Foata normal form. 4/6134 useless extension candidates. Maximal degree in co-relation 24456. Up to 5218 conditions per place. [2024-06-27 18:56:02,683 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 118 selfloop transitions, 27 changer transitions 0/155 dead transitions. [2024-06-27 18:56:02,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 155 transitions, 1299 flow [2024-06-27 18:56:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:56:02,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-27 18:56:02,685 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 799 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:56:02,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 155 transitions, 1299 flow [2024-06-27 18:56:02,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 1272 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:56:02,719 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 909 flow [2024-06-27 18:56:02,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-06-27 18:56:02,720 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-27 18:56:02,720 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 909 flow [2024-06-27 18:56:02,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:02,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:02,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:02,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:56:02,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:02,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash -638240284, now seen corresponding path program 3 times [2024-06-27 18:56:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:02,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873689099] [2024-06-27 18:56:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:02,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873689099] [2024-06-27 18:56:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873689099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815094310] [2024-06-27 18:56:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:03,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:03,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:03,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:03,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 909 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:03,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:03,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:03,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:04,400 INFO L124 PetriNetUnfolderBase]: 3798/6319 cut-off events. [2024-06-27 18:56:04,401 INFO L125 PetriNetUnfolderBase]: For 28443/28443 co-relation queries the response was YES. [2024-06-27 18:56:04,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25556 conditions, 6319 events. 3798/6319 cut-off events. For 28443/28443 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 40894 event pairs, 1350 based on Foata normal form. 4/6113 useless extension candidates. Maximal degree in co-relation 25513. Up to 5210 conditions per place. [2024-06-27 18:56:04,441 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 115 selfloop transitions, 29 changer transitions 0/154 dead transitions. [2024-06-27 18:56:04,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 154 transitions, 1320 flow [2024-06-27 18:56:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:56:04,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:56:04,443 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 909 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:56:04,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 154 transitions, 1320 flow [2024-06-27 18:56:04,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 154 transitions, 1233 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:04,481 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 899 flow [2024-06-27 18:56:04,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=899, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2024-06-27 18:56:04,482 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2024-06-27 18:56:04,482 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 899 flow [2024-06-27 18:56:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:04,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:04,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:04,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:56:04,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:04,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:04,483 INFO L85 PathProgramCache]: Analyzing trace with hash -638229372, now seen corresponding path program 1 times [2024-06-27 18:56:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559434675] [2024-06-27 18:56:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559434675] [2024-06-27 18:56:05,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559434675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691078803] [2024-06-27 18:56:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:05,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:05,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 899 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:05,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:05,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:05,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:06,380 INFO L124 PetriNetUnfolderBase]: 3790/6248 cut-off events. [2024-06-27 18:56:06,380 INFO L125 PetriNetUnfolderBase]: For 28609/28609 co-relation queries the response was YES. [2024-06-27 18:56:06,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25153 conditions, 6248 events. 3790/6248 cut-off events. For 28609/28609 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39877 event pairs, 1349 based on Foata normal form. 4/6077 useless extension candidates. Maximal degree in co-relation 25110. Up to 5339 conditions per place. [2024-06-27 18:56:06,423 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 137 selfloop transitions, 28 changer transitions 0/175 dead transitions. [2024-06-27 18:56:06,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 175 transitions, 1477 flow [2024-06-27 18:56:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:56:06,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:56:06,425 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 899 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:56:06,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 175 transitions, 1477 flow [2024-06-27 18:56:06,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 175 transitions, 1431 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 18:56:06,459 INFO L231 Difference]: Finished difference. Result has 107 places, 132 transitions, 1088 flow [2024-06-27 18:56:06,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1088, PETRI_PLACES=107, PETRI_TRANSITIONS=132} [2024-06-27 18:56:06,460 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2024-06-27 18:56:06,460 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 132 transitions, 1088 flow [2024-06-27 18:56:06,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:06,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:06,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:06,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:56:06,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:06,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2027636645, now seen corresponding path program 1 times [2024-06-27 18:56:06,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:06,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000460877] [2024-06-27 18:56:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:06,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000460877] [2024-06-27 18:56:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000460877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574833247] [2024-06-27 18:56:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:07,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:56:07,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 132 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:07,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:07,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:56:07,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:08,411 INFO L124 PetriNetUnfolderBase]: 3705/5992 cut-off events. [2024-06-27 18:56:08,412 INFO L125 PetriNetUnfolderBase]: For 37810/37881 co-relation queries the response was YES. [2024-06-27 18:56:08,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26313 conditions, 5992 events. 3705/5992 cut-off events. For 37810/37881 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 38150 event pairs, 1295 based on Foata normal form. 42/5772 useless extension candidates. Maximal degree in co-relation 26265. Up to 5092 conditions per place. [2024-06-27 18:56:08,465 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 123 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-06-27 18:56:08,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 182 transitions, 1626 flow [2024-06-27 18:56:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 18:56:08,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-27 18:56:08,469 INFO L175 Difference]: Start difference. First operand has 107 places, 132 transitions, 1088 flow. Second operand 7 states and 187 transitions. [2024-06-27 18:56:08,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 182 transitions, 1626 flow [2024-06-27 18:56:08,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 182 transitions, 1568 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-27 18:56:08,539 INFO L231 Difference]: Finished difference. Result has 115 places, 145 transitions, 1259 flow [2024-06-27 18:56:08,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1259, PETRI_PLACES=115, PETRI_TRANSITIONS=145} [2024-06-27 18:56:08,540 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 18:56:08,541 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 145 transitions, 1259 flow [2024-06-27 18:56:08,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:08,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:08,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:08,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:56:08,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:08,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:08,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2022837349, now seen corresponding path program 1 times [2024-06-27 18:56:08,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:08,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772779794] [2024-06-27 18:56:08,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:08,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:09,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:09,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772779794] [2024-06-27 18:56:09,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772779794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:09,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:09,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788005917] [2024-06-27 18:56:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:09,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:09,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:09,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:09,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:09,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 145 transitions, 1259 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:09,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:09,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:09,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:10,926 INFO L124 PetriNetUnfolderBase]: 3863/6265 cut-off events. [2024-06-27 18:56:10,926 INFO L125 PetriNetUnfolderBase]: For 42387/42387 co-relation queries the response was YES. [2024-06-27 18:56:10,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 6265 events. 3863/6265 cut-off events. For 42387/42387 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39852 event pairs, 1350 based on Foata normal form. 2/6112 useless extension candidates. Maximal degree in co-relation 28863. Up to 5454 conditions per place. [2024-06-27 18:56:10,969 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 166 selfloop transitions, 29 changer transitions 0/205 dead transitions. [2024-06-27 18:56:10,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 205 transitions, 1902 flow [2024-06-27 18:56:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2024-06-27 18:56:10,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48723404255319147 [2024-06-27 18:56:10,971 INFO L175 Difference]: Start difference. First operand has 115 places, 145 transitions, 1259 flow. Second operand 10 states and 229 transitions. [2024-06-27 18:56:10,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 205 transitions, 1902 flow [2024-06-27 18:56:11,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 205 transitions, 1817 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:11,011 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 1403 flow [2024-06-27 18:56:11,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1403, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2024-06-27 18:56:11,011 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-27 18:56:11,011 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 1403 flow [2024-06-27 18:56:11,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:11,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:11,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:11,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:56:11,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:11,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1680192455, now seen corresponding path program 2 times [2024-06-27 18:56:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:11,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116566495] [2024-06-27 18:56:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:12,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:12,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116566495] [2024-06-27 18:56:12,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116566495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:12,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:12,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58412827] [2024-06-27 18:56:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:12,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:12,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 1403 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:12,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:12,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:12,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:13,034 INFO L124 PetriNetUnfolderBase]: 3909/6509 cut-off events. [2024-06-27 18:56:13,034 INFO L125 PetriNetUnfolderBase]: For 48733/48733 co-relation queries the response was YES. [2024-06-27 18:56:13,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30442 conditions, 6509 events. 3909/6509 cut-off events. For 48733/48733 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 42309 event pairs, 1278 based on Foata normal form. 4/6299 useless extension candidates. Maximal degree in co-relation 30384. Up to 5329 conditions per place. [2024-06-27 18:56:13,075 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 165 selfloop transitions, 35 changer transitions 0/210 dead transitions. [2024-06-27 18:56:13,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 210 transitions, 2011 flow [2024-06-27 18:56:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:56:13,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 18:56:13,078 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 1403 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:56:13,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 210 transitions, 2011 flow [2024-06-27 18:56:13,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 210 transitions, 1938 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:56:13,145 INFO L231 Difference]: Finished difference. Result has 129 places, 165 transitions, 1461 flow [2024-06-27 18:56:13,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1461, PETRI_PLACES=129, PETRI_TRANSITIONS=165} [2024-06-27 18:56:13,147 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-27 18:56:13,147 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 165 transitions, 1461 flow [2024-06-27 18:56:13,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:13,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:13,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:13,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:56:13,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:13,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1689715655, now seen corresponding path program 3 times [2024-06-27 18:56:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366575720] [2024-06-27 18:56:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:14,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366575720] [2024-06-27 18:56:14,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366575720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:14,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:14,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:14,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307001380] [2024-06-27 18:56:14,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:14,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:14,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:14,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:14,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 165 transitions, 1461 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:14,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:14,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:14,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:14,984 INFO L124 PetriNetUnfolderBase]: 3932/6347 cut-off events. [2024-06-27 18:56:14,984 INFO L125 PetriNetUnfolderBase]: For 54449/54449 co-relation queries the response was YES. [2024-06-27 18:56:15,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31755 conditions, 6347 events. 3932/6347 cut-off events. For 54449/54449 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 39537 event pairs, 1208 based on Foata normal form. 2/6204 useless extension candidates. Maximal degree in co-relation 31696. Up to 5376 conditions per place. [2024-06-27 18:56:15,031 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 159 selfloop transitions, 60 changer transitions 0/229 dead transitions. [2024-06-27 18:56:15,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 229 transitions, 2310 flow [2024-06-27 18:56:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:15,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:56:15,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:56:15,033 INFO L175 Difference]: Start difference. First operand has 129 places, 165 transitions, 1461 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:56:15,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 229 transitions, 2310 flow [2024-06-27 18:56:15,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 229 transitions, 2188 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:15,099 INFO L231 Difference]: Finished difference. Result has 134 places, 185 transitions, 1767 flow [2024-06-27 18:56:15,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1767, PETRI_PLACES=134, PETRI_TRANSITIONS=185} [2024-06-27 18:56:15,100 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-06-27 18:56:15,100 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 185 transitions, 1767 flow [2024-06-27 18:56:15,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:15,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:15,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:15,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:56:15,101 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:15,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:15,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1689389225, now seen corresponding path program 4 times [2024-06-27 18:56:15,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:15,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325145960] [2024-06-27 18:56:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:15,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325145960] [2024-06-27 18:56:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325145960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273755525] [2024-06-27 18:56:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:16,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:16,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:16,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 185 transitions, 1767 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:16,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:16,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:16,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:17,083 INFO L124 PetriNetUnfolderBase]: 3955/6589 cut-off events. [2024-06-27 18:56:17,083 INFO L125 PetriNetUnfolderBase]: For 62811/62811 co-relation queries the response was YES. [2024-06-27 18:56:17,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33605 conditions, 6589 events. 3955/6589 cut-off events. For 62811/62811 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 42950 event pairs, 1277 based on Foata normal form. 4/6378 useless extension candidates. Maximal degree in co-relation 33542. Up to 5393 conditions per place. [2024-06-27 18:56:17,135 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 182 selfloop transitions, 45 changer transitions 0/237 dead transitions. [2024-06-27 18:56:17,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 237 transitions, 2497 flow [2024-06-27 18:56:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:56:17,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:56:17,136 INFO L175 Difference]: Start difference. First operand has 134 places, 185 transitions, 1767 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:56:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 237 transitions, 2497 flow [2024-06-27 18:56:17,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 237 transitions, 2408 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 18:56:17,245 INFO L231 Difference]: Finished difference. Result has 140 places, 191 transitions, 1887 flow [2024-06-27 18:56:17,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1887, PETRI_PLACES=140, PETRI_TRANSITIONS=191} [2024-06-27 18:56:17,246 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-06-27 18:56:17,246 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 191 transitions, 1887 flow [2024-06-27 18:56:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:17,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:17,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:17,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:56:17,247 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:17,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash -481453091, now seen corresponding path program 1 times [2024-06-27 18:56:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098137210] [2024-06-27 18:56:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098137210] [2024-06-27 18:56:17,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098137210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:17,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:17,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:56:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596554909] [2024-06-27 18:56:17,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:17,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:56:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:56:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:56:17,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 191 transitions, 1887 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:17,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:17,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:17,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:18,725 INFO L124 PetriNetUnfolderBase]: 3904/6366 cut-off events. [2024-06-27 18:56:18,725 INFO L125 PetriNetUnfolderBase]: For 62134/62134 co-relation queries the response was YES. [2024-06-27 18:56:18,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32929 conditions, 6366 events. 3904/6366 cut-off events. For 62134/62134 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 40937 event pairs, 1246 based on Foata normal form. 6/6203 useless extension candidates. Maximal degree in co-relation 32864. Up to 5360 conditions per place. [2024-06-27 18:56:18,776 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 171 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-27 18:56:18,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 211 transitions, 2389 flow [2024-06-27 18:56:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:56:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:56:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-27 18:56:18,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 18:56:18,779 INFO L175 Difference]: Start difference. First operand has 140 places, 191 transitions, 1887 flow. Second operand 5 states and 126 transitions. [2024-06-27 18:56:18,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 211 transitions, 2389 flow [2024-06-27 18:56:18,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 211 transitions, 2259 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:18,876 INFO L231 Difference]: Finished difference. Result has 139 places, 191 transitions, 1833 flow [2024-06-27 18:56:18,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1833, PETRI_PLACES=139, PETRI_TRANSITIONS=191} [2024-06-27 18:56:18,877 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-27 18:56:18,877 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 191 transitions, 1833 flow [2024-06-27 18:56:18,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:18,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:18,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:18,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:56:18,878 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:18,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 289847411, now seen corresponding path program 1 times [2024-06-27 18:56:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089583132] [2024-06-27 18:56:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089583132] [2024-06-27 18:56:19,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089583132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:19,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627807831] [2024-06-27 18:56:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:19,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:19,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:19,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:19,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 191 transitions, 1833 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:19,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:19,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:19,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:21,068 INFO L124 PetriNetUnfolderBase]: 3997/6504 cut-off events. [2024-06-27 18:56:21,068 INFO L125 PetriNetUnfolderBase]: For 63928/63928 co-relation queries the response was YES. [2024-06-27 18:56:21,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33673 conditions, 6504 events. 3997/6504 cut-off events. For 63928/63928 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 41444 event pairs, 1336 based on Foata normal form. 4/6343 useless extension candidates. Maximal degree in co-relation 33607. Up to 5620 conditions per place. [2024-06-27 18:56:21,114 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 220 selfloop transitions, 30 changer transitions 0/260 dead transitions. [2024-06-27 18:56:21,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 260 transitions, 2669 flow [2024-06-27 18:56:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 18:56:21,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-27 18:56:21,115 INFO L175 Difference]: Start difference. First operand has 139 places, 191 transitions, 1833 flow. Second operand 10 states and 239 transitions. [2024-06-27 18:56:21,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 260 transitions, 2669 flow [2024-06-27 18:56:21,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 260 transitions, 2609 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:21,193 INFO L231 Difference]: Finished difference. Result has 149 places, 211 transitions, 2072 flow [2024-06-27 18:56:21,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2072, PETRI_PLACES=149, PETRI_TRANSITIONS=211} [2024-06-27 18:56:21,194 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-27 18:56:21,194 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 211 transitions, 2072 flow [2024-06-27 18:56:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:21,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:21,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:21,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:56:21,195 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:21,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1202577073, now seen corresponding path program 2 times [2024-06-27 18:56:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103934077] [2024-06-27 18:56:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103934077] [2024-06-27 18:56:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103934077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:22,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75564441] [2024-06-27 18:56:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:22,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:22,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 211 transitions, 2072 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:22,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:22,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:22,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:23,436 INFO L124 PetriNetUnfolderBase]: 4002/6513 cut-off events. [2024-06-27 18:56:23,437 INFO L125 PetriNetUnfolderBase]: For 70621/70621 co-relation queries the response was YES. [2024-06-27 18:56:23,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34832 conditions, 6513 events. 4002/6513 cut-off events. For 70621/70621 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 41615 event pairs, 1277 based on Foata normal form. 2/6350 useless extension candidates. Maximal degree in co-relation 34762. Up to 5596 conditions per place. [2024-06-27 18:56:23,490 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 220 selfloop transitions, 39 changer transitions 0/269 dead transitions. [2024-06-27 18:56:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 269 transitions, 2928 flow [2024-06-27 18:56:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:56:23,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:56:23,491 INFO L175 Difference]: Start difference. First operand has 149 places, 211 transitions, 2072 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:56:23,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 269 transitions, 2928 flow [2024-06-27 18:56:23,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 269 transitions, 2808 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:23,583 INFO L231 Difference]: Finished difference. Result has 156 places, 224 transitions, 2276 flow [2024-06-27 18:56:23,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2276, PETRI_PLACES=156, PETRI_TRANSITIONS=224} [2024-06-27 18:56:23,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2024-06-27 18:56:23,584 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 224 transitions, 2276 flow [2024-06-27 18:56:23,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:23,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:23,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:23,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:56:23,585 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:23,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1716553201, now seen corresponding path program 1 times [2024-06-27 18:56:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:23,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486452522] [2024-06-27 18:56:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486452522] [2024-06-27 18:56:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486452522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:24,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:24,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074348983] [2024-06-27 18:56:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:24,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:24,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:24,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 224 transitions, 2276 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:24,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:24,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:25,983 INFO L124 PetriNetUnfolderBase]: 4239/6856 cut-off events. [2024-06-27 18:56:25,983 INFO L125 PetriNetUnfolderBase]: For 85679/85679 co-relation queries the response was YES. [2024-06-27 18:56:26,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37968 conditions, 6856 events. 4239/6856 cut-off events. For 85679/85679 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 43700 event pairs, 1236 based on Foata normal form. 26/6729 useless extension candidates. Maximal degree in co-relation 37894. Up to 5544 conditions per place. [2024-06-27 18:56:26,034 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 234 selfloop transitions, 49 changer transitions 0/293 dead transitions. [2024-06-27 18:56:26,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 293 transitions, 3284 flow [2024-06-27 18:56:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:56:26,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-27 18:56:26,036 INFO L175 Difference]: Start difference. First operand has 156 places, 224 transitions, 2276 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:56:26,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 293 transitions, 3284 flow [2024-06-27 18:56:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 293 transitions, 3113 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:26,141 INFO L231 Difference]: Finished difference. Result has 165 places, 236 transitions, 2467 flow [2024-06-27 18:56:26,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2467, PETRI_PLACES=165, PETRI_TRANSITIONS=236} [2024-06-27 18:56:26,142 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-06-27 18:56:26,142 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 236 transitions, 2467 flow [2024-06-27 18:56:26,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:26,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:26,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:26,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:56:26,143 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:26,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash 841935523, now seen corresponding path program 2 times [2024-06-27 18:56:26,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:26,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690405552] [2024-06-27 18:56:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:26,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690405552] [2024-06-27 18:56:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690405552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:27,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:27,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22439715] [2024-06-27 18:56:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:27,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:27,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:27,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:27,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 236 transitions, 2467 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:27,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:27,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:27,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:28,933 INFO L124 PetriNetUnfolderBase]: 4690/7721 cut-off events. [2024-06-27 18:56:28,934 INFO L125 PetriNetUnfolderBase]: For 109020/109020 co-relation queries the response was YES. [2024-06-27 18:56:28,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44415 conditions, 7721 events. 4690/7721 cut-off events. For 109020/109020 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 50989 event pairs, 1195 based on Foata normal form. 4/7518 useless extension candidates. Maximal degree in co-relation 44336. Up to 5707 conditions per place. [2024-06-27 18:56:29,018 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 231 selfloop transitions, 69 changer transitions 0/310 dead transitions. [2024-06-27 18:56:29,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 310 transitions, 3620 flow [2024-06-27 18:56:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:56:29,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 18:56:29,020 INFO L175 Difference]: Start difference. First operand has 165 places, 236 transitions, 2467 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:56:29,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 310 transitions, 3620 flow [2024-06-27 18:56:29,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 310 transitions, 3507 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:29,181 INFO L231 Difference]: Finished difference. Result has 173 places, 249 transitions, 2748 flow [2024-06-27 18:56:29,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2748, PETRI_PLACES=173, PETRI_TRANSITIONS=249} [2024-06-27 18:56:29,182 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 120 predicate places. [2024-06-27 18:56:29,182 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 249 transitions, 2748 flow [2024-06-27 18:56:29,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:29,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:29,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:56:29,183 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:29,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash 841579333, now seen corresponding path program 3 times [2024-06-27 18:56:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:29,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24758593] [2024-06-27 18:56:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:30,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:30,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24758593] [2024-06-27 18:56:30,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24758593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:30,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:30,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:30,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891673461] [2024-06-27 18:56:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:30,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:30,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 249 transitions, 2748 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:30,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:30,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:30,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:31,769 INFO L124 PetriNetUnfolderBase]: 4894/8076 cut-off events. [2024-06-27 18:56:31,769 INFO L125 PetriNetUnfolderBase]: For 125304/125304 co-relation queries the response was YES. [2024-06-27 18:56:31,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47686 conditions, 8076 events. 4894/8076 cut-off events. For 125304/125304 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 53851 event pairs, 1324 based on Foata normal form. 24/7875 useless extension candidates. Maximal degree in co-relation 47603. Up to 6442 conditions per place. [2024-06-27 18:56:31,857 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 243 selfloop transitions, 65 changer transitions 0/318 dead transitions. [2024-06-27 18:56:31,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 318 transitions, 3727 flow [2024-06-27 18:56:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:56:31,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 18:56:31,858 INFO L175 Difference]: Start difference. First operand has 173 places, 249 transitions, 2748 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:56:31,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 318 transitions, 3727 flow [2024-06-27 18:56:32,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 318 transitions, 3641 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:56:32,068 INFO L231 Difference]: Finished difference. Result has 179 places, 251 transitions, 2845 flow [2024-06-27 18:56:32,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2845, PETRI_PLACES=179, PETRI_TRANSITIONS=251} [2024-06-27 18:56:32,068 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 18:56:32,068 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 251 transitions, 2845 flow [2024-06-27 18:56:32,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:32,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:32,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:32,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:56:32,069 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:32,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash 546360133, now seen corresponding path program 4 times [2024-06-27 18:56:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:32,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868178562] [2024-06-27 18:56:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:32,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868178562] [2024-06-27 18:56:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868178562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919248768] [2024-06-27 18:56:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:33,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:33,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 251 transitions, 2845 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:33,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:33,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:33,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:34,502 INFO L124 PetriNetUnfolderBase]: 4904/7869 cut-off events. [2024-06-27 18:56:34,503 INFO L125 PetriNetUnfolderBase]: For 122342/122342 co-relation queries the response was YES. [2024-06-27 18:56:34,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47964 conditions, 7869 events. 4904/7869 cut-off events. For 122342/122342 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50439 event pairs, 1243 based on Foata normal form. 4/7726 useless extension candidates. Maximal degree in co-relation 47879. Up to 6875 conditions per place. [2024-06-27 18:56:34,578 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 246 selfloop transitions, 55 changer transitions 0/311 dead transitions. [2024-06-27 18:56:34,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 311 transitions, 3777 flow [2024-06-27 18:56:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:56:34,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:56:34,580 INFO L175 Difference]: Start difference. First operand has 179 places, 251 transitions, 2845 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:56:34,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 311 transitions, 3777 flow [2024-06-27 18:56:34,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 311 transitions, 3650 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:56:34,794 INFO L231 Difference]: Finished difference. Result has 182 places, 260 transitions, 2996 flow [2024-06-27 18:56:34,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2996, PETRI_PLACES=182, PETRI_TRANSITIONS=260} [2024-06-27 18:56:34,795 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 129 predicate places. [2024-06-27 18:56:34,795 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 260 transitions, 2996 flow [2024-06-27 18:56:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:34,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:34,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:34,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:56:34,796 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:34,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash 938334266, now seen corresponding path program 1 times [2024-06-27 18:56:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:34,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099639363] [2024-06-27 18:56:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099639363] [2024-06-27 18:56:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099639363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:35,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105980140] [2024-06-27 18:56:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:35,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:35,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:56:35,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 260 transitions, 2996 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:35,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:35,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:56:35,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:37,211 INFO L124 PetriNetUnfolderBase]: 4862/8091 cut-off events. [2024-06-27 18:56:37,211 INFO L125 PetriNetUnfolderBase]: For 132344/132479 co-relation queries the response was YES. [2024-06-27 18:56:37,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47948 conditions, 8091 events. 4862/8091 cut-off events. For 132344/132479 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 55636 event pairs, 1375 based on Foata normal form. 34/7789 useless extension candidates. Maximal degree in co-relation 47861. Up to 6525 conditions per place. [2024-06-27 18:56:37,298 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 206 selfloop transitions, 69 changer transitions 0/343 dead transitions. [2024-06-27 18:56:37,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 343 transitions, 4093 flow [2024-06-27 18:56:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:56:37,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2024-06-27 18:56:37,300 INFO L175 Difference]: Start difference. First operand has 182 places, 260 transitions, 2996 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:56:37,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 343 transitions, 4093 flow [2024-06-27 18:56:37,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 343 transitions, 3884 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:37,529 INFO L231 Difference]: Finished difference. Result has 188 places, 295 transitions, 3393 flow [2024-06-27 18:56:37,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3393, PETRI_PLACES=188, PETRI_TRANSITIONS=295} [2024-06-27 18:56:37,529 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-06-27 18:56:37,530 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 295 transitions, 3393 flow [2024-06-27 18:56:37,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:37,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:37,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:56:37,530 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:37,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1377707524, now seen corresponding path program 2 times [2024-06-27 18:56:37,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:37,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625171896] [2024-06-27 18:56:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:38,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:38,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625171896] [2024-06-27 18:56:38,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625171896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:38,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:38,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:38,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417468510] [2024-06-27 18:56:38,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:38,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:38,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:38,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:56:38,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 295 transitions, 3393 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:38,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:38,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:56:38,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:39,960 INFO L124 PetriNetUnfolderBase]: 4969/8245 cut-off events. [2024-06-27 18:56:39,960 INFO L125 PetriNetUnfolderBase]: For 147200/147372 co-relation queries the response was YES. [2024-06-27 18:56:40,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50530 conditions, 8245 events. 4969/8245 cut-off events. For 147200/147372 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 56569 event pairs, 1065 based on Foata normal form. 69/7971 useless extension candidates. Maximal degree in co-relation 50441. Up to 6470 conditions per place. [2024-06-27 18:56:40,052 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 207 selfloop transitions, 71 changer transitions 0/346 dead transitions. [2024-06-27 18:56:40,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 346 transitions, 4211 flow [2024-06-27 18:56:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:56:40,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-27 18:56:40,053 INFO L175 Difference]: Start difference. First operand has 188 places, 295 transitions, 3393 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:56:40,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 346 transitions, 4211 flow [2024-06-27 18:56:40,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 346 transitions, 4103 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:40,284 INFO L231 Difference]: Finished difference. Result has 194 places, 301 transitions, 3540 flow [2024-06-27 18:56:40,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3540, PETRI_PLACES=194, PETRI_TRANSITIONS=301} [2024-06-27 18:56:40,284 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-06-27 18:56:40,285 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 301 transitions, 3540 flow [2024-06-27 18:56:40,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:40,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:40,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:40,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:56:40,285 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1073537410, now seen corresponding path program 3 times [2024-06-27 18:56:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475344462] [2024-06-27 18:56:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475344462] [2024-06-27 18:56:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475344462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:41,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:41,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:41,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009515314] [2024-06-27 18:56:41,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:41,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:41,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:41,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:41,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:41,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:56:41,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 301 transitions, 3540 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:41,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:41,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:56:41,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:42,876 INFO L124 PetriNetUnfolderBase]: 5135/8482 cut-off events. [2024-06-27 18:56:42,876 INFO L125 PetriNetUnfolderBase]: For 164487/164707 co-relation queries the response was YES. [2024-06-27 18:56:42,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53551 conditions, 8482 events. 5135/8482 cut-off events. For 164487/164707 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 58236 event pairs, 1370 based on Foata normal form. 60/8196 useless extension candidates. Maximal degree in co-relation 53460. Up to 6809 conditions per place. [2024-06-27 18:56:42,948 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 214 selfloop transitions, 69 changer transitions 0/351 dead transitions. [2024-06-27 18:56:42,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 351 transitions, 4390 flow [2024-06-27 18:56:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 18:56:42,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-27 18:56:42,950 INFO L175 Difference]: Start difference. First operand has 194 places, 301 transitions, 3540 flow. Second operand 8 states and 215 transitions. [2024-06-27 18:56:42,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 351 transitions, 4390 flow [2024-06-27 18:56:43,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 351 transitions, 4203 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:43,149 INFO L231 Difference]: Finished difference. Result has 197 places, 303 transitions, 3553 flow [2024-06-27 18:56:43,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3553, PETRI_PLACES=197, PETRI_TRANSITIONS=303} [2024-06-27 18:56:43,149 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-27 18:56:43,149 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 303 transitions, 3553 flow [2024-06-27 18:56:43,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:43,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:43,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:43,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:56:43,150 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:43,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1665908858, now seen corresponding path program 4 times [2024-06-27 18:56:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:43,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784195850] [2024-06-27 18:56:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784195850] [2024-06-27 18:56:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784195850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255795684] [2024-06-27 18:56:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:44,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:56:44,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 303 transitions, 3553 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:44,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:44,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:56:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:45,663 INFO L124 PetriNetUnfolderBase]: 5307/8760 cut-off events. [2024-06-27 18:56:45,664 INFO L125 PetriNetUnfolderBase]: For 165594/165811 co-relation queries the response was YES. [2024-06-27 18:56:45,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54424 conditions, 8760 events. 5307/8760 cut-off events. For 165594/165811 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 60471 event pairs, 1415 based on Foata normal form. 60/8473 useless extension candidates. Maximal degree in co-relation 54332. Up to 7127 conditions per place. [2024-06-27 18:56:45,749 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 248 selfloop transitions, 43 changer transitions 0/359 dead transitions. [2024-06-27 18:56:45,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 359 transitions, 4479 flow [2024-06-27 18:56:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:56:45,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-06-27 18:56:45,751 INFO L175 Difference]: Start difference. First operand has 197 places, 303 transitions, 3553 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:56:45,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 359 transitions, 4479 flow [2024-06-27 18:56:46,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 359 transitions, 4325 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:46,031 INFO L231 Difference]: Finished difference. Result has 200 places, 310 transitions, 3598 flow [2024-06-27 18:56:46,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3598, PETRI_PLACES=200, PETRI_TRANSITIONS=310} [2024-06-27 18:56:46,032 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-27 18:56:46,032 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 310 transitions, 3598 flow [2024-06-27 18:56:46,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:46,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:46,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:46,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:56:46,034 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:46,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1673533370, now seen corresponding path program 1 times [2024-06-27 18:56:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:46,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16512975] [2024-06-27 18:56:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:47,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16512975] [2024-06-27 18:56:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16512975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:47,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610101458] [2024-06-27 18:56:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:47,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:47,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:47,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:47,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:47,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 310 transitions, 3598 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:47,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:47,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:47,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:48,980 INFO L124 PetriNetUnfolderBase]: 5796/9417 cut-off events. [2024-06-27 18:56:48,980 INFO L125 PetriNetUnfolderBase]: For 171975/171975 co-relation queries the response was YES. [2024-06-27 18:56:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59335 conditions, 9417 events. 5796/9417 cut-off events. For 171975/171975 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 63662 event pairs, 1606 based on Foata normal form. 2/9208 useless extension candidates. Maximal degree in co-relation 59241. Up to 8217 conditions per place. [2024-06-27 18:56:49,082 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 329 selfloop transitions, 36 changer transitions 0/375 dead transitions. [2024-06-27 18:56:49,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 375 transitions, 4697 flow [2024-06-27 18:56:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 18:56:49,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 18:56:49,083 INFO L175 Difference]: Start difference. First operand has 200 places, 310 transitions, 3598 flow. Second operand 10 states and 246 transitions. [2024-06-27 18:56:49,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 375 transitions, 4697 flow [2024-06-27 18:56:49,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 375 transitions, 4586 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:49,367 INFO L231 Difference]: Finished difference. Result has 206 places, 317 transitions, 3692 flow [2024-06-27 18:56:49,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3692, PETRI_PLACES=206, PETRI_TRANSITIONS=317} [2024-06-27 18:56:49,368 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 153 predicate places. [2024-06-27 18:56:49,368 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 317 transitions, 3692 flow [2024-06-27 18:56:49,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:49,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:49,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:56:49,369 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:49,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1947356864, now seen corresponding path program 5 times [2024-06-27 18:56:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:49,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355333658] [2024-06-27 18:56:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:49,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355333658] [2024-06-27 18:56:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355333658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:50,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634018775] [2024-06-27 18:56:50,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:50,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:50,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:50,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:56:50,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 317 transitions, 3692 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:50,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:50,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:56:50,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:52,086 INFO L124 PetriNetUnfolderBase]: 5516/9256 cut-off events. [2024-06-27 18:56:52,087 INFO L125 PetriNetUnfolderBase]: For 186553/186751 co-relation queries the response was YES. [2024-06-27 18:56:52,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57577 conditions, 9256 events. 5516/9256 cut-off events. For 186553/186751 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 64750 event pairs, 1273 based on Foata normal form. 58/8907 useless extension candidates. Maximal degree in co-relation 57481. Up to 6912 conditions per place. [2024-06-27 18:56:52,172 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 221 selfloop transitions, 87 changer transitions 0/378 dead transitions. [2024-06-27 18:56:52,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 378 transitions, 4806 flow [2024-06-27 18:56:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 18:56:52,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-27 18:56:52,174 INFO L175 Difference]: Start difference. First operand has 206 places, 317 transitions, 3692 flow. Second operand 8 states and 216 transitions. [2024-06-27 18:56:52,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 378 transitions, 4806 flow [2024-06-27 18:56:52,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 378 transitions, 4673 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:52,434 INFO L231 Difference]: Finished difference. Result has 210 places, 327 transitions, 3952 flow [2024-06-27 18:56:52,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3559, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3952, PETRI_PLACES=210, PETRI_TRANSITIONS=327} [2024-06-27 18:56:52,434 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 157 predicate places. [2024-06-27 18:56:52,435 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 327 transitions, 3952 flow [2024-06-27 18:56:52,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:52,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:52,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:52,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:56:52,435 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:52,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:52,436 INFO L85 PathProgramCache]: Analyzing trace with hash 319147238, now seen corresponding path program 2 times [2024-06-27 18:56:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587024956] [2024-06-27 18:56:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:52,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:53,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:53,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587024956] [2024-06-27 18:56:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587024956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:53,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:53,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:53,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926862646] [2024-06-27 18:56:53,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:53,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:53,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:53,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:53,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 327 transitions, 3952 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:53,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:53,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:55,802 INFO L124 PetriNetUnfolderBase]: 5993/9872 cut-off events. [2024-06-27 18:56:55,803 INFO L125 PetriNetUnfolderBase]: For 202863/202863 co-relation queries the response was YES. [2024-06-27 18:56:55,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64035 conditions, 9872 events. 5993/9872 cut-off events. For 202863/202863 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 67771 event pairs, 1531 based on Foata normal form. 2/9604 useless extension candidates. Maximal degree in co-relation 63936. Up to 8216 conditions per place. [2024-06-27 18:56:55,912 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 316 selfloop transitions, 77 changer transitions 0/403 dead transitions. [2024-06-27 18:56:55,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 403 transitions, 5328 flow [2024-06-27 18:56:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:56:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:56:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 18:56:55,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:56:55,913 INFO L175 Difference]: Start difference. First operand has 210 places, 327 transitions, 3952 flow. Second operand 11 states and 275 transitions. [2024-06-27 18:56:55,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 403 transitions, 5328 flow [2024-06-27 18:56:56,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 403 transitions, 5223 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:56,494 INFO L231 Difference]: Finished difference. Result has 219 places, 334 transitions, 4174 flow [2024-06-27 18:56:56,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3847, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4174, PETRI_PLACES=219, PETRI_TRANSITIONS=334} [2024-06-27 18:56:56,495 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-27 18:56:56,495 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 334 transitions, 4174 flow [2024-06-27 18:56:56,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:56,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:56,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:56,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:56:56,496 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:56,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash -242713370, now seen corresponding path program 3 times [2024-06-27 18:56:56,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:56,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095950804] [2024-06-27 18:56:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:56,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095950804] [2024-06-27 18:56:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095950804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:57,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:57,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:57,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563795426] [2024-06-27 18:56:57,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:57,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:56:57,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 334 transitions, 4174 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:57,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:57,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:56:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:59,806 INFO L124 PetriNetUnfolderBase]: 6013/9509 cut-off events. [2024-06-27 18:56:59,806 INFO L125 PetriNetUnfolderBase]: For 208273/208273 co-relation queries the response was YES. [2024-06-27 18:56:59,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64564 conditions, 9509 events. 6013/9509 cut-off events. For 208273/208273 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 61569 event pairs, 1326 based on Foata normal form. 2/9367 useless extension candidates. Maximal degree in co-relation 64462. Up to 8207 conditions per place. [2024-06-27 18:56:59,901 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 281 selfloop transitions, 119 changer transitions 0/410 dead transitions. [2024-06-27 18:56:59,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 410 transitions, 5656 flow [2024-06-27 18:56:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:56:59,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 18:56:59,902 INFO L175 Difference]: Start difference. First operand has 219 places, 334 transitions, 4174 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:56:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 410 transitions, 5656 flow [2024-06-27 18:57:00,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 410 transitions, 5485 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:57:00,311 INFO L231 Difference]: Finished difference. Result has 224 places, 350 transitions, 4681 flow [2024-06-27 18:57:00,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4681, PETRI_PLACES=224, PETRI_TRANSITIONS=350} [2024-06-27 18:57:00,311 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-27 18:57:00,311 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 350 transitions, 4681 flow [2024-06-27 18:57:00,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:00,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:00,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:00,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:57:00,312 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:00,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 973974243, now seen corresponding path program 1 times [2024-06-27 18:57:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393615432] [2024-06-27 18:57:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:00,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:00,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393615432] [2024-06-27 18:57:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393615432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:00,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:00,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84458984] [2024-06-27 18:57:00,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:00,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:00,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:01,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:01,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 350 transitions, 4681 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:01,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:01,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:01,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:02,717 INFO L124 PetriNetUnfolderBase]: 6035/10052 cut-off events. [2024-06-27 18:57:02,717 INFO L125 PetriNetUnfolderBase]: For 226250/226250 co-relation queries the response was YES. [2024-06-27 18:57:02,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66938 conditions, 10052 events. 6035/10052 cut-off events. For 226250/226250 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 70274 event pairs, 1654 based on Foata normal form. 1/9760 useless extension candidates. Maximal degree in co-relation 66833. Up to 8663 conditions per place. [2024-06-27 18:57:02,854 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 354 selfloop transitions, 23 changer transitions 0/387 dead transitions. [2024-06-27 18:57:02,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 387 transitions, 5749 flow [2024-06-27 18:57:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:57:02,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 18:57:02,856 INFO L175 Difference]: Start difference. First operand has 224 places, 350 transitions, 4681 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:57:02,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 387 transitions, 5749 flow [2024-06-27 18:57:03,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 387 transitions, 5413 flow, removed 149 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:03,413 INFO L231 Difference]: Finished difference. Result has 228 places, 356 transitions, 4515 flow [2024-06-27 18:57:03,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4515, PETRI_PLACES=228, PETRI_TRANSITIONS=356} [2024-06-27 18:57:03,413 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-06-27 18:57:03,413 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 356 transitions, 4515 flow [2024-06-27 18:57:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:03,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:03,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:57:03,414 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:03,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash 974094213, now seen corresponding path program 2 times [2024-06-27 18:57:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:03,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238550675] [2024-06-27 18:57:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:04,029 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 18:57:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238550675] [2024-06-27 18:57:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238550675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:04,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:04,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611034169] [2024-06-27 18:57:04,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:04,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:04,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 356 transitions, 4515 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:04,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:04,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:04,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:05,837 INFO L124 PetriNetUnfolderBase]: 6069/10049 cut-off events. [2024-06-27 18:57:05,837 INFO L125 PetriNetUnfolderBase]: For 228686/228686 co-relation queries the response was YES. [2024-06-27 18:57:05,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67119 conditions, 10049 events. 6069/10049 cut-off events. For 228686/228686 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 69756 event pairs, 1656 based on Foata normal form. 1/9769 useless extension candidates. Maximal degree in co-relation 67012. Up to 8733 conditions per place. [2024-06-27 18:57:05,952 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 358 selfloop transitions, 21 changer transitions 0/389 dead transitions. [2024-06-27 18:57:05,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 389 transitions, 5490 flow [2024-06-27 18:57:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:57:05,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-27 18:57:05,954 INFO L175 Difference]: Start difference. First operand has 228 places, 356 transitions, 4515 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:57:05,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 389 transitions, 5490 flow [2024-06-27 18:57:06,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 389 transitions, 5416 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:06,357 INFO L231 Difference]: Finished difference. Result has 232 places, 362 transitions, 4588 flow [2024-06-27 18:57:06,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4588, PETRI_PLACES=232, PETRI_TRANSITIONS=362} [2024-06-27 18:57:06,357 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-06-27 18:57:06,358 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 362 transitions, 4588 flow [2024-06-27 18:57:06,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:06,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:06,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:06,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:57:06,358 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:06,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash 974094399, now seen corresponding path program 1 times [2024-06-27 18:57:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723852539] [2024-06-27 18:57:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:06,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723852539] [2024-06-27 18:57:06,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723852539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:06,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:06,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:06,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705505401] [2024-06-27 18:57:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:07,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:07,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 362 transitions, 4588 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:07,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:07,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:07,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:08,819 INFO L124 PetriNetUnfolderBase]: 6307/10389 cut-off events. [2024-06-27 18:57:08,819 INFO L125 PetriNetUnfolderBase]: For 238438/238438 co-relation queries the response was YES. [2024-06-27 18:57:08,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69299 conditions, 10389 events. 6307/10389 cut-off events. For 238438/238438 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 71908 event pairs, 1549 based on Foata normal form. 6/10109 useless extension candidates. Maximal degree in co-relation 69190. Up to 8448 conditions per place. [2024-06-27 18:57:08,928 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 336 selfloop transitions, 68 changer transitions 0/414 dead transitions. [2024-06-27 18:57:08,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 414 transitions, 5848 flow [2024-06-27 18:57:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:57:08,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-27 18:57:08,929 INFO L175 Difference]: Start difference. First operand has 232 places, 362 transitions, 4588 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:57:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 414 transitions, 5848 flow [2024-06-27 18:57:09,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 414 transitions, 5766 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:09,279 INFO L231 Difference]: Finished difference. Result has 236 places, 378 transitions, 4835 flow [2024-06-27 18:57:09,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4835, PETRI_PLACES=236, PETRI_TRANSITIONS=378} [2024-06-27 18:57:09,280 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-27 18:57:09,280 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 378 transitions, 4835 flow [2024-06-27 18:57:09,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:09,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:09,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:09,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:57:09,280 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:09,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash -988021911, now seen corresponding path program 3 times [2024-06-27 18:57:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:09,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197638002] [2024-06-27 18:57:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:09,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:09,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197638002] [2024-06-27 18:57:09,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197638002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:09,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:09,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:09,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450164300] [2024-06-27 18:57:09,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:09,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:09,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:09,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:09,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 378 transitions, 4835 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:11,848 INFO L124 PetriNetUnfolderBase]: 6304/10515 cut-off events. [2024-06-27 18:57:11,849 INFO L125 PetriNetUnfolderBase]: For 242456/242456 co-relation queries the response was YES. [2024-06-27 18:57:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70142 conditions, 10515 events. 6304/10515 cut-off events. For 242456/242456 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 74179 event pairs, 1687 based on Foata normal form. 1/10206 useless extension candidates. Maximal degree in co-relation 70031. Up to 9045 conditions per place. [2024-06-27 18:57:11,944 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 372 selfloop transitions, 21 changer transitions 0/403 dead transitions. [2024-06-27 18:57:11,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 403 transitions, 5731 flow [2024-06-27 18:57:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:57:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:57:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:57:11,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:57:11,946 INFO L175 Difference]: Start difference. First operand has 236 places, 378 transitions, 4835 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:57:11,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 403 transitions, 5731 flow [2024-06-27 18:57:12,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 403 transitions, 5599 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:12,356 INFO L231 Difference]: Finished difference. Result has 239 places, 378 transitions, 4755 flow [2024-06-27 18:57:12,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4703, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4755, PETRI_PLACES=239, PETRI_TRANSITIONS=378} [2024-06-27 18:57:12,357 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-27 18:57:12,357 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 378 transitions, 4755 flow [2024-06-27 18:57:12,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:12,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:12,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:12,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:57:12,358 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:12,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:12,358 INFO L85 PathProgramCache]: Analyzing trace with hash -988021725, now seen corresponding path program 2 times [2024-06-27 18:57:12,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:12,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247648111] [2024-06-27 18:57:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:12,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:12,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247648111] [2024-06-27 18:57:12,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247648111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:12,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:12,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:12,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463145462] [2024-06-27 18:57:12,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:12,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:12,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:13,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:13,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 378 transitions, 4755 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:13,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:13,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:13,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:14,977 INFO L124 PetriNetUnfolderBase]: 6406/10551 cut-off events. [2024-06-27 18:57:14,977 INFO L125 PetriNetUnfolderBase]: For 249399/249399 co-relation queries the response was YES. [2024-06-27 18:57:15,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70520 conditions, 10551 events. 6406/10551 cut-off events. For 249399/249399 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 73083 event pairs, 1565 based on Foata normal form. 6/10262 useless extension candidates. Maximal degree in co-relation 70408. Up to 8510 conditions per place. [2024-06-27 18:57:15,117 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 328 selfloop transitions, 72 changer transitions 0/410 dead transitions. [2024-06-27 18:57:15,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 410 transitions, 5851 flow [2024-06-27 18:57:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:57:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:57:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 18:57:15,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:57:15,119 INFO L175 Difference]: Start difference. First operand has 239 places, 378 transitions, 4755 flow. Second operand 6 states and 153 transitions. [2024-06-27 18:57:15,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 410 transitions, 5851 flow [2024-06-27 18:57:15,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 410 transitions, 5799 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:57:15,616 INFO L231 Difference]: Finished difference. Result has 240 places, 382 transitions, 4921 flow [2024-06-27 18:57:15,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4703, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4921, PETRI_PLACES=240, PETRI_TRANSITIONS=382} [2024-06-27 18:57:15,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 187 predicate places. [2024-06-27 18:57:15,617 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 382 transitions, 4921 flow [2024-06-27 18:57:15,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:15,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:15,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:15,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:57:15,618 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:15,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1786789735, now seen corresponding path program 3 times [2024-06-27 18:57:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:15,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403992973] [2024-06-27 18:57:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:16,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403992973] [2024-06-27 18:57:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403992973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:16,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330068876] [2024-06-27 18:57:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:16,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:16,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 382 transitions, 4921 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:16,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:16,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:16,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:17,968 INFO L124 PetriNetUnfolderBase]: 6367/10405 cut-off events. [2024-06-27 18:57:17,968 INFO L125 PetriNetUnfolderBase]: For 253906/253906 co-relation queries the response was YES. [2024-06-27 18:57:18,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70700 conditions, 10405 events. 6367/10405 cut-off events. For 253906/253906 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 72074 event pairs, 1759 based on Foata normal form. 6/10163 useless extension candidates. Maximal degree in co-relation 70587. Up to 9038 conditions per place. [2024-06-27 18:57:18,089 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 360 selfloop transitions, 32 changer transitions 0/402 dead transitions. [2024-06-27 18:57:18,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 402 transitions, 5815 flow [2024-06-27 18:57:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:57:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:57:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:57:18,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:57:18,091 INFO L175 Difference]: Start difference. First operand has 240 places, 382 transitions, 4921 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:57:18,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 402 transitions, 5815 flow [2024-06-27 18:57:18,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 402 transitions, 5716 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:18,598 INFO L231 Difference]: Finished difference. Result has 243 places, 382 transitions, 4893 flow [2024-06-27 18:57:18,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4893, PETRI_PLACES=243, PETRI_TRANSITIONS=382} [2024-06-27 18:57:18,598 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-27 18:57:18,599 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 382 transitions, 4893 flow [2024-06-27 18:57:18,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:18,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:18,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:18,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:57:18,599 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:18,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1786779846, now seen corresponding path program 1 times [2024-06-27 18:57:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:18,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726686650] [2024-06-27 18:57:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:19,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:19,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726686650] [2024-06-27 18:57:19,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726686650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:19,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:19,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:57:19,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586235453] [2024-06-27 18:57:19,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:19,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:57:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:57:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:57:19,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:19,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 382 transitions, 4893 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:19,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:19,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:19,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:21,442 INFO L124 PetriNetUnfolderBase]: 6518/10624 cut-off events. [2024-06-27 18:57:21,442 INFO L125 PetriNetUnfolderBase]: For 260549/260549 co-relation queries the response was YES. [2024-06-27 18:57:21,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71321 conditions, 10624 events. 6518/10624 cut-off events. For 260549/260549 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 73468 event pairs, 1748 based on Foata normal form. 14/10386 useless extension candidates. Maximal degree in co-relation 71207. Up to 8877 conditions per place. [2024-06-27 18:57:21,573 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 351 selfloop transitions, 53 changer transitions 0/414 dead transitions. [2024-06-27 18:57:21,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 414 transitions, 5953 flow [2024-06-27 18:57:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:57:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:57:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 18:57:21,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 18:57:21,574 INFO L175 Difference]: Start difference. First operand has 243 places, 382 transitions, 4893 flow. Second operand 6 states and 152 transitions. [2024-06-27 18:57:21,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 414 transitions, 5953 flow [2024-06-27 18:57:22,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 414 transitions, 5785 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:57:22,084 INFO L231 Difference]: Finished difference. Result has 243 places, 384 transitions, 4868 flow [2024-06-27 18:57:22,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4725, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4868, PETRI_PLACES=243, PETRI_TRANSITIONS=384} [2024-06-27 18:57:22,085 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-27 18:57:22,085 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 384 transitions, 4868 flow [2024-06-27 18:57:22,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:22,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:22,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:22,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:57:22,086 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:22,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1458744846, now seen corresponding path program 1 times [2024-06-27 18:57:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837235794] [2024-06-27 18:57:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:22,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:22,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837235794] [2024-06-27 18:57:22,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837235794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:22,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:22,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170832808] [2024-06-27 18:57:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:22,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:23,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:23,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 384 transitions, 4868 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:23,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:23,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:23,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:25,036 INFO L124 PetriNetUnfolderBase]: 6555/10619 cut-off events. [2024-06-27 18:57:25,037 INFO L125 PetriNetUnfolderBase]: For 257659/257659 co-relation queries the response was YES. [2024-06-27 18:57:25,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72098 conditions, 10619 events. 6555/10619 cut-off events. For 257659/257659 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 73054 event pairs, 1385 based on Foata normal form. 4/10395 useless extension candidates. Maximal degree in co-relation 71984. Up to 9168 conditions per place. [2024-06-27 18:57:25,155 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 398 selfloop transitions, 37 changer transitions 0/445 dead transitions. [2024-06-27 18:57:25,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 445 transitions, 6102 flow [2024-06-27 18:57:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:57:25,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 18:57:25,156 INFO L175 Difference]: Start difference. First operand has 243 places, 384 transitions, 4868 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:57:25,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 445 transitions, 6102 flow [2024-06-27 18:57:25,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 445 transitions, 5981 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:25,635 INFO L231 Difference]: Finished difference. Result has 250 places, 394 transitions, 5021 flow [2024-06-27 18:57:25,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5021, PETRI_PLACES=250, PETRI_TRANSITIONS=394} [2024-06-27 18:57:25,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-06-27 18:57:25,636 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 394 transitions, 5021 flow [2024-06-27 18:57:25,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:25,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:25,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:57:25,637 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:25,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash 330229554, now seen corresponding path program 2 times [2024-06-27 18:57:25,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:25,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503592324] [2024-06-27 18:57:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:25,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:26,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:26,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503592324] [2024-06-27 18:57:26,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503592324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:26,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:26,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:26,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907617182] [2024-06-27 18:57:26,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:26,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:26,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:26,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:26,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 394 transitions, 5021 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:26,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:26,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:26,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:28,638 INFO L124 PetriNetUnfolderBase]: 6592/10646 cut-off events. [2024-06-27 18:57:28,638 INFO L125 PetriNetUnfolderBase]: For 267645/267645 co-relation queries the response was YES. [2024-06-27 18:57:28,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72998 conditions, 10646 events. 6592/10646 cut-off events. For 267645/267645 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 73175 event pairs, 1665 based on Foata normal form. 4/10429 useless extension candidates. Maximal degree in co-relation 72881. Up to 9238 conditions per place. [2024-06-27 18:57:28,765 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 400 selfloop transitions, 42 changer transitions 0/452 dead transitions. [2024-06-27 18:57:28,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 452 transitions, 6246 flow [2024-06-27 18:57:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:28,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:57:28,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 18:57:28,766 INFO L175 Difference]: Start difference. First operand has 250 places, 394 transitions, 5021 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:57:28,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 452 transitions, 6246 flow [2024-06-27 18:57:29,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 452 transitions, 6107 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:29,356 INFO L231 Difference]: Finished difference. Result has 256 places, 400 transitions, 5114 flow [2024-06-27 18:57:29,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5114, PETRI_PLACES=256, PETRI_TRANSITIONS=400} [2024-06-27 18:57:29,357 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-06-27 18:57:29,357 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 400 transitions, 5114 flow [2024-06-27 18:57:29,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:29,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:29,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:57:29,358 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:29,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1335714546, now seen corresponding path program 3 times [2024-06-27 18:57:29,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:29,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851944744] [2024-06-27 18:57:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851944744] [2024-06-27 18:57:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851944744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929644293] [2024-06-27 18:57:30,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:30,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:30,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 400 transitions, 5114 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:30,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:30,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:30,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:32,362 INFO L124 PetriNetUnfolderBase]: 6629/10698 cut-off events. [2024-06-27 18:57:32,362 INFO L125 PetriNetUnfolderBase]: For 275882/275882 co-relation queries the response was YES. [2024-06-27 18:57:32,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73543 conditions, 10698 events. 6629/10698 cut-off events. For 275882/275882 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 73454 event pairs, 1672 based on Foata normal form. 4/10482 useless extension candidates. Maximal degree in co-relation 73423. Up to 9212 conditions per place. [2024-06-27 18:57:32,487 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 395 selfloop transitions, 53 changer transitions 0/458 dead transitions. [2024-06-27 18:57:32,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 458 transitions, 6370 flow [2024-06-27 18:57:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:57:32,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 18:57:32,489 INFO L175 Difference]: Start difference. First operand has 256 places, 400 transitions, 5114 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:57:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 458 transitions, 6370 flow [2024-06-27 18:57:33,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 458 transitions, 6233 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:33,020 INFO L231 Difference]: Finished difference. Result has 262 places, 406 transitions, 5239 flow [2024-06-27 18:57:33,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5239, PETRI_PLACES=262, PETRI_TRANSITIONS=406} [2024-06-27 18:57:33,020 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 209 predicate places. [2024-06-27 18:57:33,021 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 406 transitions, 5239 flow [2024-06-27 18:57:33,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:33,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:33,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:33,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:57:33,021 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:33,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash 340225168, now seen corresponding path program 1 times [2024-06-27 18:57:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:33,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419687630] [2024-06-27 18:57:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:34,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:34,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419687630] [2024-06-27 18:57:34,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419687630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:34,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:34,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:57:34,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23640372] [2024-06-27 18:57:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:34,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:57:34,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:57:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:57:34,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:34,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 406 transitions, 5239 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:34,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:34,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:34,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:36,414 INFO L124 PetriNetUnfolderBase]: 6880/11069 cut-off events. [2024-06-27 18:57:36,414 INFO L125 PetriNetUnfolderBase]: For 315008/315008 co-relation queries the response was YES. [2024-06-27 18:57:36,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77809 conditions, 11069 events. 6880/11069 cut-off events. For 315008/315008 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 76080 event pairs, 1656 based on Foata normal form. 12/10871 useless extension candidates. Maximal degree in co-relation 77686. Up to 8776 conditions per place. [2024-06-27 18:57:36,547 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 395 selfloop transitions, 70 changer transitions 0/475 dead transitions. [2024-06-27 18:57:36,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 475 transitions, 6749 flow [2024-06-27 18:57:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:57:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:57:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:57:36,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 18:57:36,549 INFO L175 Difference]: Start difference. First operand has 262 places, 406 transitions, 5239 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:57:36,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 475 transitions, 6749 flow [2024-06-27 18:57:37,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 475 transitions, 6608 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:37,242 INFO L231 Difference]: Finished difference. Result has 269 places, 408 transitions, 5318 flow [2024-06-27 18:57:37,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5318, PETRI_PLACES=269, PETRI_TRANSITIONS=408} [2024-06-27 18:57:37,243 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 216 predicate places. [2024-06-27 18:57:37,243 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 408 transitions, 5318 flow [2024-06-27 18:57:37,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:37,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:37,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:57:37,244 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:37,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:37,244 INFO L85 PathProgramCache]: Analyzing trace with hash 339928498, now seen corresponding path program 2 times [2024-06-27 18:57:37,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232713953] [2024-06-27 18:57:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232713953] [2024-06-27 18:57:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232713953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:38,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:38,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:57:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696108156] [2024-06-27 18:57:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:57:38,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:57:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:57:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:38,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 408 transitions, 5318 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:38,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:38,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:38,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:40,777 INFO L124 PetriNetUnfolderBase]: 6890/11159 cut-off events. [2024-06-27 18:57:40,777 INFO L125 PetriNetUnfolderBase]: For 317248/317248 co-relation queries the response was YES. [2024-06-27 18:57:40,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77808 conditions, 11159 events. 6890/11159 cut-off events. For 317248/317248 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 77543 event pairs, 1701 based on Foata normal form. 16/10945 useless extension candidates. Maximal degree in co-relation 77683. Up to 9393 conditions per place. [2024-06-27 18:57:40,904 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 377 selfloop transitions, 95 changer transitions 0/482 dead transitions. [2024-06-27 18:57:40,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 482 transitions, 6874 flow [2024-06-27 18:57:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:57:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:57:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:57:40,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 18:57:40,906 INFO L175 Difference]: Start difference. First operand has 269 places, 408 transitions, 5318 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:57:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 482 transitions, 6874 flow [2024-06-27 18:57:41,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 482 transitions, 6757 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:57:41,430 INFO L231 Difference]: Finished difference. Result has 275 places, 418 transitions, 5764 flow [2024-06-27 18:57:41,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5764, PETRI_PLACES=275, PETRI_TRANSITIONS=418} [2024-06-27 18:57:41,431 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-06-27 18:57:41,431 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 418 transitions, 5764 flow [2024-06-27 18:57:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:41,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:41,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:41,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:57:41,432 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:41,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash -443546320, now seen corresponding path program 4 times [2024-06-27 18:57:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661395225] [2024-06-27 18:57:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:42,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:42,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661395225] [2024-06-27 18:57:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661395225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:42,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:42,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588376339] [2024-06-27 18:57:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:42,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:42,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:42,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:42,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 418 transitions, 5764 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:42,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:42,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:42,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:44,688 INFO L124 PetriNetUnfolderBase]: 6950/11487 cut-off events. [2024-06-27 18:57:44,688 INFO L125 PetriNetUnfolderBase]: For 333149/333149 co-relation queries the response was YES. [2024-06-27 18:57:44,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80621 conditions, 11487 events. 6950/11487 cut-off events. For 333149/333149 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 81235 event pairs, 1645 based on Foata normal form. 4/11173 useless extension candidates. Maximal degree in co-relation 80492. Up to 9762 conditions per place. [2024-06-27 18:57:44,851 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 416 selfloop transitions, 49 changer transitions 0/475 dead transitions. [2024-06-27 18:57:44,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 475 transitions, 7015 flow [2024-06-27 18:57:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:57:44,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 18:57:44,852 INFO L175 Difference]: Start difference. First operand has 275 places, 418 transitions, 5764 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:57:44,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 475 transitions, 7015 flow [2024-06-27 18:57:45,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 475 transitions, 6747 flow, removed 91 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:45,903 INFO L231 Difference]: Finished difference. Result has 281 places, 424 transitions, 5702 flow [2024-06-27 18:57:45,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5496, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5702, PETRI_PLACES=281, PETRI_TRANSITIONS=424} [2024-06-27 18:57:45,903 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 228 predicate places. [2024-06-27 18:57:45,903 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 424 transitions, 5702 flow [2024-06-27 18:57:45,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:45,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:45,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:45,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:57:45,904 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -671447470, now seen corresponding path program 5 times [2024-06-27 18:57:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725080821] [2024-06-27 18:57:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:46,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725080821] [2024-06-27 18:57:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725080821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:46,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:46,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541580792] [2024-06-27 18:57:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:46,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:46,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:46,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:46,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 424 transitions, 5702 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:46,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:46,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:46,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:49,285 INFO L124 PetriNetUnfolderBase]: 6942/11475 cut-off events. [2024-06-27 18:57:49,285 INFO L125 PetriNetUnfolderBase]: For 334436/334436 co-relation queries the response was YES. [2024-06-27 18:57:49,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80736 conditions, 11475 events. 6942/11475 cut-off events. For 334436/334436 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 81144 event pairs, 1652 based on Foata normal form. 4/11161 useless extension candidates. Maximal degree in co-relation 80604. Up to 9750 conditions per place. [2024-06-27 18:57:49,429 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 417 selfloop transitions, 50 changer transitions 0/477 dead transitions. [2024-06-27 18:57:49,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 477 transitions, 6919 flow [2024-06-27 18:57:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:57:49,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 18:57:49,430 INFO L175 Difference]: Start difference. First operand has 281 places, 424 transitions, 5702 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:57:49,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 477 transitions, 6919 flow [2024-06-27 18:57:50,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 477 transitions, 6784 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:57:50,175 INFO L231 Difference]: Finished difference. Result has 284 places, 426 transitions, 5727 flow [2024-06-27 18:57:50,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5567, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5727, PETRI_PLACES=284, PETRI_TRANSITIONS=426} [2024-06-27 18:57:50,175 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-27 18:57:50,175 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 426 transitions, 5727 flow [2024-06-27 18:57:50,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:50,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:50,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:50,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:57:50,176 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:50,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 829461768, now seen corresponding path program 6 times [2024-06-27 18:57:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602625413] [2024-06-27 18:57:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:51,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:51,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602625413] [2024-06-27 18:57:51,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602625413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:51,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:51,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082624333] [2024-06-27 18:57:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:51,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:51,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:51,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 426 transitions, 5727 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:51,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:51,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:51,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:53,417 INFO L124 PetriNetUnfolderBase]: 6942/11343 cut-off events. [2024-06-27 18:57:53,417 INFO L125 PetriNetUnfolderBase]: For 339291/339291 co-relation queries the response was YES. [2024-06-27 18:57:53,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80669 conditions, 11343 events. 6942/11343 cut-off events. For 339291/339291 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 79560 event pairs, 1633 based on Foata normal form. 4/11063 useless extension candidates. Maximal degree in co-relation 80536. Up to 9605 conditions per place. [2024-06-27 18:57:53,562 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 417 selfloop transitions, 57 changer transitions 0/484 dead transitions. [2024-06-27 18:57:53,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 484 transitions, 7069 flow [2024-06-27 18:57:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:57:53,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 18:57:53,564 INFO L175 Difference]: Start difference. First operand has 284 places, 426 transitions, 5727 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:57:53,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 484 transitions, 7069 flow [2024-06-27 18:57:54,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 484 transitions, 6948 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:54,314 INFO L231 Difference]: Finished difference. Result has 290 places, 432 transitions, 5905 flow [2024-06-27 18:57:54,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5905, PETRI_PLACES=290, PETRI_TRANSITIONS=432} [2024-06-27 18:57:54,315 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-06-27 18:57:54,315 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 432 transitions, 5905 flow [2024-06-27 18:57:54,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:54,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:54,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:54,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:57:54,315 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:54,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1066118372, now seen corresponding path program 3 times [2024-06-27 18:57:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:54,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177865961] [2024-06-27 18:57:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:54,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:55,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:55,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177865961] [2024-06-27 18:57:55,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177865961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:55,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:57:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838968270] [2024-06-27 18:57:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:55,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:57:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:57:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:57:55,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:57:55,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 432 transitions, 5905 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:55,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:55,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:57:55,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:58,050 INFO L124 PetriNetUnfolderBase]: 7193/11728 cut-off events. [2024-06-27 18:57:58,050 INFO L125 PetriNetUnfolderBase]: For 391513/391513 co-relation queries the response was YES. [2024-06-27 18:57:58,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85605 conditions, 11728 events. 7193/11728 cut-off events. For 391513/391513 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 82459 event pairs, 1676 based on Foata normal form. 12/11465 useless extension candidates. Maximal degree in co-relation 85470. Up to 9434 conditions per place. [2024-06-27 18:57:58,218 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 430 selfloop transitions, 61 changer transitions 0/501 dead transitions. [2024-06-27 18:57:58,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 501 transitions, 7521 flow [2024-06-27 18:57:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:57:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:57:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 18:57:58,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 18:57:58,220 INFO L175 Difference]: Start difference. First operand has 290 places, 432 transitions, 5905 flow. Second operand 10 states and 256 transitions. [2024-06-27 18:57:58,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 501 transitions, 7521 flow [2024-06-27 18:57:59,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 501 transitions, 7333 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-27 18:57:59,115 INFO L231 Difference]: Finished difference. Result has 295 places, 434 transitions, 5931 flow [2024-06-27 18:57:59,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5717, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5931, PETRI_PLACES=295, PETRI_TRANSITIONS=434} [2024-06-27 18:57:59,115 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 242 predicate places. [2024-06-27 18:57:59,116 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 434 transitions, 5931 flow [2024-06-27 18:57:59,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:59,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:59,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:57:59,116 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:59,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1065821702, now seen corresponding path program 4 times [2024-06-27 18:57:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132613680] [2024-06-27 18:57:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132613680] [2024-06-27 18:58:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132613680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081035470] [2024-06-27 18:58:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:00,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:00,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 434 transitions, 5931 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:00,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:00,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:00,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:02,797 INFO L124 PetriNetUnfolderBase]: 7165/11736 cut-off events. [2024-06-27 18:58:02,797 INFO L125 PetriNetUnfolderBase]: For 384684/384684 co-relation queries the response was YES. [2024-06-27 18:58:02,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84466 conditions, 11736 events. 7165/11736 cut-off events. For 384684/384684 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 83096 event pairs, 1701 based on Foata normal form. 16/11459 useless extension candidates. Maximal degree in co-relation 84329. Up to 9867 conditions per place. [2024-06-27 18:58:02,931 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 435 selfloop transitions, 59 changer transitions 0/504 dead transitions. [2024-06-27 18:58:02,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 504 transitions, 7293 flow [2024-06-27 18:58:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:58:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:58:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-27 18:58:02,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338491295938105 [2024-06-27 18:58:02,932 INFO L175 Difference]: Start difference. First operand has 295 places, 434 transitions, 5931 flow. Second operand 11 states and 276 transitions. [2024-06-27 18:58:02,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 504 transitions, 7293 flow [2024-06-27 18:58:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 504 transitions, 7167 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:58:03,771 INFO L231 Difference]: Finished difference. Result has 300 places, 434 transitions, 5933 flow [2024-06-27 18:58:03,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5805, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5933, PETRI_PLACES=300, PETRI_TRANSITIONS=434} [2024-06-27 18:58:03,772 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-06-27 18:58:03,772 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 434 transitions, 5933 flow [2024-06-27 18:58:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:03,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:03,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:03,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:58:03,773 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:03,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash 169186498, now seen corresponding path program 5 times [2024-06-27 18:58:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:03,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468453022] [2024-06-27 18:58:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:03,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468453022] [2024-06-27 18:58:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468453022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652793254] [2024-06-27 18:58:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:04,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:05,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:05,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 434 transitions, 5933 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:05,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:05,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:05,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:07,807 INFO L124 PetriNetUnfolderBase]: 7476/12235 cut-off events. [2024-06-27 18:58:07,807 INFO L125 PetriNetUnfolderBase]: For 415943/415943 co-relation queries the response was YES. [2024-06-27 18:58:07,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89148 conditions, 12235 events. 7476/12235 cut-off events. For 415943/415943 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87126 event pairs, 1735 based on Foata normal form. 12/11955 useless extension candidates. Maximal degree in co-relation 89009. Up to 9967 conditions per place. [2024-06-27 18:58:07,947 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 437 selfloop transitions, 61 changer transitions 0/508 dead transitions. [2024-06-27 18:58:07,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 508 transitions, 7624 flow [2024-06-27 18:58:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:58:07,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:58:07,948 INFO L175 Difference]: Start difference. First operand has 300 places, 434 transitions, 5933 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:58:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 508 transitions, 7624 flow [2024-06-27 18:58:08,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 508 transitions, 7503 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:58:08,822 INFO L231 Difference]: Finished difference. Result has 303 places, 441 transitions, 6109 flow [2024-06-27 18:58:08,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5812, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6109, PETRI_PLACES=303, PETRI_TRANSITIONS=441} [2024-06-27 18:58:08,823 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-06-27 18:58:08,823 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 441 transitions, 6109 flow [2024-06-27 18:58:08,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:08,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:08,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:08,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:58:08,824 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:08,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:08,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1057547492, now seen corresponding path program 6 times [2024-06-27 18:58:08,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:08,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018097958] [2024-06-27 18:58:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:10,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018097958] [2024-06-27 18:58:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018097958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:10,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:10,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343648040] [2024-06-27 18:58:10,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:10,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:10,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:10,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:10,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:10,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 441 transitions, 6109 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:10,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:10,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:10,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:13,072 INFO L124 PetriNetUnfolderBase]: 7629/12557 cut-off events. [2024-06-27 18:58:13,072 INFO L125 PetriNetUnfolderBase]: For 440118/440118 co-relation queries the response was YES. [2024-06-27 18:58:13,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91736 conditions, 12557 events. 7629/12557 cut-off events. For 440118/440118 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 90482 event pairs, 1809 based on Foata normal form. 16/12252 useless extension candidates. Maximal degree in co-relation 91594. Up to 10606 conditions per place. [2024-06-27 18:58:13,236 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 445 selfloop transitions, 52 changer transitions 0/507 dead transitions. [2024-06-27 18:58:13,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 507 transitions, 7502 flow [2024-06-27 18:58:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:58:13,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 18:58:13,237 INFO L175 Difference]: Start difference. First operand has 303 places, 441 transitions, 6109 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:58:13,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 507 transitions, 7502 flow [2024-06-27 18:58:14,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 507 transitions, 7398 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:58:14,032 INFO L231 Difference]: Finished difference. Result has 309 places, 445 transitions, 6193 flow [2024-06-27 18:58:14,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6005, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6193, PETRI_PLACES=309, PETRI_TRANSITIONS=445} [2024-06-27 18:58:14,033 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 256 predicate places. [2024-06-27 18:58:14,033 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 445 transitions, 6193 flow [2024-06-27 18:58:14,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:14,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:14,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:14,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:58:14,034 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:14,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash -671440526, now seen corresponding path program 7 times [2024-06-27 18:58:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006166547] [2024-06-27 18:58:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006166547] [2024-06-27 18:58:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006166547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:15,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631140302] [2024-06-27 18:58:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:15,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:15,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:15,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 445 transitions, 6193 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:15,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:15,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:15,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:18,251 INFO L124 PetriNetUnfolderBase]: 7714/12716 cut-off events. [2024-06-27 18:58:18,251 INFO L125 PetriNetUnfolderBase]: For 435810/435810 co-relation queries the response was YES. [2024-06-27 18:58:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92213 conditions, 12716 events. 7714/12716 cut-off events. For 435810/435810 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 91896 event pairs, 1841 based on Foata normal form. 16/12403 useless extension candidates. Maximal degree in co-relation 92068. Up to 10793 conditions per place. [2024-06-27 18:58:18,419 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 446 selfloop transitions, 52 changer transitions 0/508 dead transitions. [2024-06-27 18:58:18,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 508 transitions, 7554 flow [2024-06-27 18:58:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:58:18,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297872340425532 [2024-06-27 18:58:18,421 INFO L175 Difference]: Start difference. First operand has 309 places, 445 transitions, 6193 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:58:18,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 508 transitions, 7554 flow [2024-06-27 18:58:19,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 508 transitions, 7449 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:58:19,418 INFO L231 Difference]: Finished difference. Result has 312 places, 446 transitions, 6230 flow [2024-06-27 18:58:19,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6230, PETRI_PLACES=312, PETRI_TRANSITIONS=446} [2024-06-27 18:58:19,419 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 259 predicate places. [2024-06-27 18:58:19,419 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 446 transitions, 6230 flow [2024-06-27 18:58:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:19,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:19,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:58:19,420 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:19,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1332197040, now seen corresponding path program 8 times [2024-06-27 18:58:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:19,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567410615] [2024-06-27 18:58:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:20,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567410615] [2024-06-27 18:58:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567410615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:20,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:20,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001946551] [2024-06-27 18:58:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:20,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:20,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 446 transitions, 6230 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:20,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:20,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:20,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:23,297 INFO L124 PetriNetUnfolderBase]: 7686/12651 cut-off events. [2024-06-27 18:58:23,297 INFO L125 PetriNetUnfolderBase]: For 426533/426533 co-relation queries the response was YES. [2024-06-27 18:58:23,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91255 conditions, 12651 events. 7686/12651 cut-off events. For 426533/426533 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 91136 event pairs, 1816 based on Foata normal form. 16/12344 useless extension candidates. Maximal degree in co-relation 91109. Up to 10681 conditions per place. [2024-06-27 18:58:23,484 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 445 selfloop transitions, 61 changer transitions 0/516 dead transitions. [2024-06-27 18:58:23,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 516 transitions, 7616 flow [2024-06-27 18:58:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:58:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:58:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-27 18:58:23,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299806576402321 [2024-06-27 18:58:23,485 INFO L175 Difference]: Start difference. First operand has 312 places, 446 transitions, 6230 flow. Second operand 11 states and 274 transitions. [2024-06-27 18:58:23,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 516 transitions, 7616 flow [2024-06-27 18:58:24,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 516 transitions, 7461 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:58:24,397 INFO L231 Difference]: Finished difference. Result has 314 places, 446 transitions, 6207 flow [2024-06-27 18:58:24,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6075, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6207, PETRI_PLACES=314, PETRI_TRANSITIONS=446} [2024-06-27 18:58:24,398 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 261 predicate places. [2024-06-27 18:58:24,398 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 446 transitions, 6207 flow [2024-06-27 18:58:24,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:24,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:24,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:24,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:58:24,398 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:24,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1646226626, now seen corresponding path program 9 times [2024-06-27 18:58:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029781265] [2024-06-27 18:58:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029781265] [2024-06-27 18:58:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029781265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770840618] [2024-06-27 18:58:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:25,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:25,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 446 transitions, 6207 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:25,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:25,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:25,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:28,344 INFO L124 PetriNetUnfolderBase]: 7900/12753 cut-off events. [2024-06-27 18:58:28,344 INFO L125 PetriNetUnfolderBase]: For 458595/458595 co-relation queries the response was YES. [2024-06-27 18:58:28,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94741 conditions, 12753 events. 7900/12753 cut-off events. For 458595/458595 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 89840 event pairs, 1671 based on Foata normal form. 12/12533 useless extension candidates. Maximal degree in co-relation 94596. Up to 8533 conditions per place. [2024-06-27 18:58:28,507 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 401 selfloop transitions, 107 changer transitions 0/518 dead transitions. [2024-06-27 18:58:28,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 518 transitions, 7943 flow [2024-06-27 18:58:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:58:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:58:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-06-27 18:58:28,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241779497098646 [2024-06-27 18:58:28,508 INFO L175 Difference]: Start difference. First operand has 314 places, 446 transitions, 6207 flow. Second operand 11 states and 271 transitions. [2024-06-27 18:58:28,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 518 transitions, 7943 flow [2024-06-27 18:58:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 518 transitions, 7815 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:58:29,614 INFO L231 Difference]: Finished difference. Result has 317 places, 450 transitions, 6433 flow [2024-06-27 18:58:29,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6081, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6433, PETRI_PLACES=317, PETRI_TRANSITIONS=450} [2024-06-27 18:58:29,614 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 264 predicate places. [2024-06-27 18:58:29,615 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 450 transitions, 6433 flow [2024-06-27 18:58:29,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:29,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:29,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:29,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:58:29,615 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:29,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash -197158832, now seen corresponding path program 10 times [2024-06-27 18:58:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:29,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305132106] [2024-06-27 18:58:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305132106] [2024-06-27 18:58:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305132106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037517744] [2024-06-27 18:58:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:30,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:30,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 450 transitions, 6433 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:30,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:30,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:30,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:33,936 INFO L124 PetriNetUnfolderBase]: 7993/13096 cut-off events. [2024-06-27 18:58:33,936 INFO L125 PetriNetUnfolderBase]: For 487879/487879 co-relation queries the response was YES. [2024-06-27 18:58:34,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97532 conditions, 13096 events. 7993/13096 cut-off events. For 487879/487879 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 94318 event pairs, 1807 based on Foata normal form. 12/12808 useless extension candidates. Maximal degree in co-relation 97385. Up to 10263 conditions per place. [2024-06-27 18:58:34,091 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 421 selfloop transitions, 95 changer transitions 0/526 dead transitions. [2024-06-27 18:58:34,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 526 transitions, 8147 flow [2024-06-27 18:58:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:58:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:58:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 296 transitions. [2024-06-27 18:58:34,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:58:34,093 INFO L175 Difference]: Start difference. First operand has 317 places, 450 transitions, 6433 flow. Second operand 12 states and 296 transitions. [2024-06-27 18:58:34,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 526 transitions, 8147 flow [2024-06-27 18:58:35,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 526 transitions, 8004 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:58:35,177 INFO L231 Difference]: Finished difference. Result has 324 places, 451 transitions, 6536 flow [2024-06-27 18:58:35,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6536, PETRI_PLACES=324, PETRI_TRANSITIONS=451} [2024-06-27 18:58:35,178 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 271 predicate places. [2024-06-27 18:58:35,178 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 451 transitions, 6536 flow [2024-06-27 18:58:35,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:35,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:35,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:35,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:58:35,179 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:35,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1303631366, now seen corresponding path program 11 times [2024-06-27 18:58:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:35,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926205062] [2024-06-27 18:58:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:35,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:36,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926205062] [2024-06-27 18:58:36,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926205062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:36,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:36,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:58:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062589301] [2024-06-27 18:58:36,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:36,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:58:36,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:58:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:58:36,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:36,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 451 transitions, 6536 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:36,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:36,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:36,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:39,373 INFO L124 PetriNetUnfolderBase]: 7998/12540 cut-off events. [2024-06-27 18:58:39,374 INFO L125 PetriNetUnfolderBase]: For 468911/468911 co-relation queries the response was YES. [2024-06-27 18:58:39,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96485 conditions, 12540 events. 7998/12540 cut-off events. For 468911/468911 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 85316 event pairs, 1476 based on Foata normal form. 16/12430 useless extension candidates. Maximal degree in co-relation 96335. Up to 10741 conditions per place. [2024-06-27 18:58:39,516 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 330 selfloop transitions, 182 changer transitions 0/522 dead transitions. [2024-06-27 18:58:39,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 522 transitions, 8172 flow [2024-06-27 18:58:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 18:58:39,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 18:58:39,518 INFO L175 Difference]: Start difference. First operand has 324 places, 451 transitions, 6536 flow. Second operand 10 states and 252 transitions. [2024-06-27 18:58:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 522 transitions, 8172 flow [2024-06-27 18:58:40,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 522 transitions, 7914 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 18:58:40,860 INFO L231 Difference]: Finished difference. Result has 325 places, 460 transitions, 7028 flow [2024-06-27 18:58:40,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6278, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7028, PETRI_PLACES=325, PETRI_TRANSITIONS=460} [2024-06-27 18:58:40,860 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 272 predicate places. [2024-06-27 18:58:40,860 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 460 transitions, 7028 flow [2024-06-27 18:58:40,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:40,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:40,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:58:40,861 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:40,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:40,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2039692792, now seen corresponding path program 1 times [2024-06-27 18:58:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:40,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868767719] [2024-06-27 18:58:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868767719] [2024-06-27 18:58:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868767719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:41,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397471088] [2024-06-27 18:58:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:41,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:41,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:41,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 460 transitions, 7028 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:41,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:41,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:41,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:44,428 INFO L124 PetriNetUnfolderBase]: 8020/13339 cut-off events. [2024-06-27 18:58:44,428 INFO L125 PetriNetUnfolderBase]: For 479813/479813 co-relation queries the response was YES. [2024-06-27 18:58:44,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98847 conditions, 13339 events. 8020/13339 cut-off events. For 479813/479813 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 98381 event pairs, 2296 based on Foata normal form. 1/12988 useless extension candidates. Maximal degree in co-relation 98696. Up to 11583 conditions per place. [2024-06-27 18:58:44,654 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 461 selfloop transitions, 38 changer transitions 0/509 dead transitions. [2024-06-27 18:58:44,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 509 transitions, 8482 flow [2024-06-27 18:58:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:58:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:58:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:58:44,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 18:58:44,656 INFO L175 Difference]: Start difference. First operand has 325 places, 460 transitions, 7028 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:58:44,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 509 transitions, 8482 flow [2024-06-27 18:58:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 509 transitions, 8278 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 18:58:45,955 INFO L231 Difference]: Finished difference. Result has 330 places, 466 transitions, 7065 flow [2024-06-27 18:58:45,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7065, PETRI_PLACES=330, PETRI_TRANSITIONS=466} [2024-06-27 18:58:45,955 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 277 predicate places. [2024-06-27 18:58:45,955 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 466 transitions, 7065 flow [2024-06-27 18:58:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:45,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:45,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:58:45,956 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:45,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2039602427, now seen corresponding path program 1 times [2024-06-27 18:58:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:45,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423499748] [2024-06-27 18:58:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:45,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:46,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:46,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423499748] [2024-06-27 18:58:46,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423499748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:46,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:46,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:46,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695561090] [2024-06-27 18:58:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:46,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:46,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 466 transitions, 7065 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:46,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:46,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:46,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:49,774 INFO L124 PetriNetUnfolderBase]: 8365/13754 cut-off events. [2024-06-27 18:58:49,774 INFO L125 PetriNetUnfolderBase]: For 531815/531815 co-relation queries the response was YES. [2024-06-27 18:58:49,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104958 conditions, 13754 events. 8365/13754 cut-off events. For 531815/531815 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 100435 event pairs, 1904 based on Foata normal form. 6/13420 useless extension candidates. Maximal degree in co-relation 104806. Up to 10703 conditions per place. [2024-06-27 18:58:49,960 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 415 selfloop transitions, 99 changer transitions 0/524 dead transitions. [2024-06-27 18:58:49,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 524 transitions, 8943 flow [2024-06-27 18:58:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:58:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:58:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:58:49,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 18:58:49,961 INFO L175 Difference]: Start difference. First operand has 330 places, 466 transitions, 7065 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:58:49,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 524 transitions, 8943 flow [2024-06-27 18:58:51,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 524 transitions, 8801 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 18:58:51,387 INFO L231 Difference]: Finished difference. Result has 334 places, 477 transitions, 7439 flow [2024-06-27 18:58:51,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6935, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7439, PETRI_PLACES=334, PETRI_TRANSITIONS=477} [2024-06-27 18:58:51,387 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 281 predicate places. [2024-06-27 18:58:51,387 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 477 transitions, 7439 flow [2024-06-27 18:58:51,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:51,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:51,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:58:51,388 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:51,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 132151020, now seen corresponding path program 2 times [2024-06-27 18:58:51,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:51,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680326544] [2024-06-27 18:58:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:51,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:52,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680326544] [2024-06-27 18:58:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680326544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:52,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153670885] [2024-06-27 18:58:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:52,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:52,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 477 transitions, 7439 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:52,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:52,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:52,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:56,506 INFO L124 PetriNetUnfolderBase]: 8397/13395 cut-off events. [2024-06-27 18:58:56,507 INFO L125 PetriNetUnfolderBase]: For 522988/522988 co-relation queries the response was YES. [2024-06-27 18:58:56,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105533 conditions, 13395 events. 8397/13395 cut-off events. For 522988/522988 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 94143 event pairs, 2153 based on Foata normal form. 1/13200 useless extension candidates. Maximal degree in co-relation 105378. Up to 12154 conditions per place. [2024-06-27 18:58:56,660 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 472 selfloop transitions, 42 changer transitions 0/524 dead transitions. [2024-06-27 18:58:56,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 524 transitions, 9007 flow [2024-06-27 18:58:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:58:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:58:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:58:56,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 18:58:56,661 INFO L175 Difference]: Start difference. First operand has 334 places, 477 transitions, 7439 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:58:56,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 524 transitions, 9007 flow [2024-06-27 18:58:58,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 524 transitions, 8798 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-27 18:58:58,215 INFO L231 Difference]: Finished difference. Result has 340 places, 492 transitions, 7742 flow [2024-06-27 18:58:58,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7230, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7742, PETRI_PLACES=340, PETRI_TRANSITIONS=492} [2024-06-27 18:58:58,216 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 287 predicate places. [2024-06-27 18:58:58,216 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 492 transitions, 7742 flow [2024-06-27 18:58:58,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:58,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:58,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:58,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:58:58,217 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:58,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2035883357, now seen corresponding path program 2 times [2024-06-27 18:58:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809894433] [2024-06-27 18:58:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:58,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809894433] [2024-06-27 18:58:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809894433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:58,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:58,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648509574] [2024-06-27 18:58:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:58,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:58,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:58,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:58:58,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 492 transitions, 7742 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:58,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:58,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:58:58,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:03,001 INFO L124 PetriNetUnfolderBase]: 8667/14054 cut-off events. [2024-06-27 18:59:03,001 INFO L125 PetriNetUnfolderBase]: For 564967/564967 co-relation queries the response was YES. [2024-06-27 18:59:03,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109585 conditions, 14054 events. 8667/14054 cut-off events. For 564967/564967 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 101387 event pairs, 1929 based on Foata normal form. 6/13738 useless extension candidates. Maximal degree in co-relation 109427. Up to 11589 conditions per place. [2024-06-27 18:59:03,206 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 458 selfloop transitions, 76 changer transitions 0/544 dead transitions. [2024-06-27 18:59:03,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 544 transitions, 9432 flow [2024-06-27 18:59:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:59:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:59:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:59:03,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 18:59:03,208 INFO L175 Difference]: Start difference. First operand has 340 places, 492 transitions, 7742 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:59:03,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 544 transitions, 9432 flow [2024-06-27 18:59:04,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 544 transitions, 9079 flow, removed 148 selfloop flow, removed 3 redundant places. [2024-06-27 18:59:04,797 INFO L231 Difference]: Finished difference. Result has 346 places, 500 transitions, 7750 flow [2024-06-27 18:59:04,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7389, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7750, PETRI_PLACES=346, PETRI_TRANSITIONS=500} [2024-06-27 18:59:04,798 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 293 predicate places. [2024-06-27 18:59:04,798 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 500 transitions, 7750 flow [2024-06-27 18:59:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:04,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:04,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:04,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:59:04,798 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:04,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2035877777, now seen corresponding path program 3 times [2024-06-27 18:59:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:04,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721726397] [2024-06-27 18:59:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:04,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721726397] [2024-06-27 18:59:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721726397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297997192] [2024-06-27 18:59:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:05,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:59:05,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 500 transitions, 7750 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:05,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:05,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:59:05,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:09,396 INFO L124 PetriNetUnfolderBase]: 8729/14174 cut-off events. [2024-06-27 18:59:09,396 INFO L125 PetriNetUnfolderBase]: For 578918/578918 co-relation queries the response was YES. [2024-06-27 18:59:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111587 conditions, 14174 events. 8729/14174 cut-off events. For 578918/578918 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 102526 event pairs, 1919 based on Foata normal form. 6/13858 useless extension candidates. Maximal degree in co-relation 111427. Up to 11634 conditions per place. [2024-06-27 18:59:09,807 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 464 selfloop transitions, 86 changer transitions 0/560 dead transitions. [2024-06-27 18:59:09,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 560 transitions, 9463 flow [2024-06-27 18:59:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:59:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:59:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 18:59:09,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 18:59:09,808 INFO L175 Difference]: Start difference. First operand has 346 places, 500 transitions, 7750 flow. Second operand 10 states and 251 transitions. [2024-06-27 18:59:09,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 560 transitions, 9463 flow [2024-06-27 18:59:11,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 560 transitions, 9284 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:11,248 INFO L231 Difference]: Finished difference. Result has 352 places, 504 transitions, 7849 flow [2024-06-27 18:59:11,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7585, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7849, PETRI_PLACES=352, PETRI_TRANSITIONS=504} [2024-06-27 18:59:11,249 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 299 predicate places. [2024-06-27 18:59:11,249 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 504 transitions, 7849 flow [2024-06-27 18:59:11,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:11,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:11,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:11,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:59:11,249 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 444390478, now seen corresponding path program 1 times [2024-06-27 18:59:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862478740] [2024-06-27 18:59:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862478740] [2024-06-27 18:59:12,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862478740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:12,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:12,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800769463] [2024-06-27 18:59:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:12,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:12,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:59:12,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 504 transitions, 7849 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:12,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:12,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:59:12,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:15,982 INFO L124 PetriNetUnfolderBase]: 8814/14394 cut-off events. [2024-06-27 18:59:15,983 INFO L125 PetriNetUnfolderBase]: For 591033/591033 co-relation queries the response was YES. [2024-06-27 18:59:16,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112958 conditions, 14394 events. 8814/14394 cut-off events. For 591033/591033 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 105800 event pairs, 2228 based on Foata normal form. 5/14082 useless extension candidates. Maximal degree in co-relation 112796. Up to 12336 conditions per place. [2024-06-27 18:59:16,163 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 464 selfloop transitions, 62 changer transitions 0/536 dead transitions. [2024-06-27 18:59:16,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 536 transitions, 9248 flow [2024-06-27 18:59:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:59:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:59:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:59:16,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:59:16,164 INFO L175 Difference]: Start difference. First operand has 352 places, 504 transitions, 7849 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:59:16,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 536 transitions, 9248 flow [2024-06-27 18:59:17,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 536 transitions, 9020 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 18:59:17,761 INFO L231 Difference]: Finished difference. Result has 350 places, 511 transitions, 7950 flow [2024-06-27 18:59:17,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7950, PETRI_PLACES=350, PETRI_TRANSITIONS=511} [2024-06-27 18:59:17,762 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 297 predicate places. [2024-06-27 18:59:17,762 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 511 transitions, 7950 flow [2024-06-27 18:59:17,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:17,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:17,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:17,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:59:17,763 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:17,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash 444094521, now seen corresponding path program 4 times [2024-06-27 18:59:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118948990] [2024-06-27 18:59:17,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:17,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:18,356 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 18:59:18,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:18,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118948990] [2024-06-27 18:59:18,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118948990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:18,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:18,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:18,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720826691] [2024-06-27 18:59:18,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:18,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:18,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:18,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:18,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:18,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:59:18,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 511 transitions, 7950 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:18,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:18,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:59:18,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand