./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:28:04,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:28:04,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:28:04,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:28:04,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:28:04,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:28:04,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:28:04,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:28:04,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:28:04,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:28:04,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:28:04,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:28:04,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:28:04,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:28:04,850 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:28:04,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:28:04,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:28:04,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:28:04,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:28:04,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:28:04,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:28:04,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:28:04,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:28:04,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:28:04,853 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:28:04,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:28:04,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:28:04,854 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:28:04,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:28:04,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:28:04,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:28:04,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:28:04,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:28:04,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:28:04,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:28:04,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:28:04,855 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:28:04,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:28:04,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:28:04,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:28:04,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:28:04,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:28:04,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:28:04,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:28:05,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:28:05,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:28:05,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:28:05,092 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:28:05,093 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:28:05,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 22:28:05,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:28:05,188 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:28:05,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-27 22:28:06,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:28:06,359 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:28:06,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-27 22:28:06,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bc06b00/8c5dec2320634639a783eae359d91a2b/FLAG56700f7c8 [2024-06-27 22:28:06,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bc06b00/8c5dec2320634639a783eae359d91a2b [2024-06-27 22:28:06,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:28:06,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:28:06,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:28:06,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:28:06,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:28:06,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:28:05" (1/2) ... [2024-06-27 22:28:06,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3728ce05 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:28:06, skipping insertion in model container [2024-06-27 22:28:06,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:28:05" (1/2) ... [2024-06-27 22:28:06,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d2911d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:28:06, skipping insertion in model container [2024-06-27 22:28:06,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:28:06" (2/2) ... [2024-06-27 22:28:06,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3728ce05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06, skipping insertion in model container [2024-06-27 22:28:06,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:28:06" (2/2) ... [2024-06-27 22:28:06,408 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:28:06,430 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:28:06,431 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EAX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:28:06,431 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EAX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:28:06,431 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EAX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:28:06,432 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:28:06,432 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-27 22:28:06,469 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:28:06,587 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/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] [2024-06-27 22:28:06,729 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:28:06,737 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:28:06,763 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/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:28:06,869 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:28:06,898 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:28:06,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06 WrapperNode [2024-06-27 22:28:06,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:28:06,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:28:06,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:28:06,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:28:06,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:06,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:06,957 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 22:28:06,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:28:06,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:28:06,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:28:06,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:28:06,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:06,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:06,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,018 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 22:28:07,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:28:07,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:28:07,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:28:07,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:28:07,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (1/1) ... [2024-06-27 22:28:07,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:28:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:28:07,084 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 22:28:07,100 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 22:28:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:28:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:28:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:28:07,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:28:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:28:07,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:28:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:28:07,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:28:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:28:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:28:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:28:07,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:28:07,116 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 22:28:07,223 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:28:07,225 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:28:07,727 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:28:07,728 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:28:07,868 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:28:07,868 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:28:07,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:28:07 BoogieIcfgContainer [2024-06-27 22:28:07,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:28:07,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:28:07,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:28:07,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:28:07,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:28:05" (1/4) ... [2024-06-27 22:28:07,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be1982 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:28:07, skipping insertion in model container [2024-06-27 22:28:07,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:28:06" (2/4) ... [2024-06-27 22:28:07,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be1982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:28:07, skipping insertion in model container [2024-06-27 22:28:07,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:06" (3/4) ... [2024-06-27 22:28:07,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be1982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:28:07, skipping insertion in model container [2024-06-27 22:28:07,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:28:07" (4/4) ... [2024-06-27 22:28:07,877 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-27 22:28:07,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:28:07,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:28:07,891 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:28:07,931 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:28:07,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:28:07,992 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:28:07,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:28:07,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:28:07,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:28:07,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:28:08,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:28:08,018 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;@635b742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:28:08,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:28:08,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:28:08,024 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:28:08,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:28:08,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:08,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:28:08,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:08,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash 349182522, now seen corresponding path program 1 times [2024-06-27 22:28:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:08,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491457609] [2024-06-27 22:28:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491457609] [2024-06-27 22:28:09,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491457609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:09,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:09,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:28:09,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983523247] [2024-06-27 22:28:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:09,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:28:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:28:09,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:28:09,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:09,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:09,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:09,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:09,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:09,995 INFO L124 PetriNetUnfolderBase]: 3670/5346 cut-off events. [2024-06-27 22:28:09,996 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 22:28:10,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10724 conditions, 5346 events. 3670/5346 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29608 event pairs, 2227 based on Foata normal form. 210/5294 useless extension candidates. Maximal degree in co-relation 10712. Up to 5279 conditions per place. [2024-06-27 22:28:10,025 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 41 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-06-27 22:28:10,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 217 flow [2024-06-27 22:28:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:28:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:28:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 22:28:10,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:28:10,036 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 93 transitions. [2024-06-27 22:28:10,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 217 flow [2024-06-27 22:28:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:10,043 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 122 flow [2024-06-27 22:28:10,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:28:10,048 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:28:10,048 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 122 flow [2024-06-27 22:28:10,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:10,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:10,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:10,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:28:10,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:10,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash 556988664, now seen corresponding path program 1 times [2024-06-27 22:28:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266965597] [2024-06-27 22:28:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:10,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:10,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266965597] [2024-06-27 22:28:10,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266965597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:10,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:10,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:28:10,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756832739] [2024-06-27 22:28:10,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:10,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:28:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:10,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:28:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:28:11,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:11,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:11,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:11,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:11,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:11,633 INFO L124 PetriNetUnfolderBase]: 3672/6026 cut-off events. [2024-06-27 22:28:11,634 INFO L125 PetriNetUnfolderBase]: For 830/830 co-relation queries the response was YES. [2024-06-27 22:28:11,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12675 conditions, 6026 events. 3672/6026 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38672 event pairs, 2485 based on Foata normal form. 3/5598 useless extension candidates. Maximal degree in co-relation 12663. Up to 5264 conditions per place. [2024-06-27 22:28:11,663 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 51 selfloop transitions, 8 changer transitions 1/71 dead transitions. [2024-06-27 22:28:11,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 315 flow [2024-06-27 22:28:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:28:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:28:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 22:28:11,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:28:11,667 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 122 flow. Second operand 4 states and 116 transitions. [2024-06-27 22:28:11,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 315 flow [2024-06-27 22:28:11,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:11,671 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 187 flow [2024-06-27 22:28:11,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-27 22:28:11,672 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 22:28:11,672 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 187 flow [2024-06-27 22:28:11,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:11,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:11,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:11,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:28:11,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:11,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash 86780557, now seen corresponding path program 1 times [2024-06-27 22:28:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946287757] [2024-06-27 22:28:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:11,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:12,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946287757] [2024-06-27 22:28:12,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946287757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:12,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:12,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375542018] [2024-06-27 22:28:12,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:12,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:12,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:12,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:12,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:12,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:12,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:12,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:13,251 INFO L124 PetriNetUnfolderBase]: 3778/6180 cut-off events. [2024-06-27 22:28:13,251 INFO L125 PetriNetUnfolderBase]: For 2594/2594 co-relation queries the response was YES. [2024-06-27 22:28:13,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14325 conditions, 6180 events. 3778/6180 cut-off events. For 2594/2594 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39648 event pairs, 1918 based on Foata normal form. 7/5761 useless extension candidates. Maximal degree in co-relation 14310. Up to 5239 conditions per place. [2024-06-27 22:28:13,278 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 69 selfloop transitions, 18 changer transitions 2/100 dead transitions. [2024-06-27 22:28:13,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 515 flow [2024-06-27 22:28:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:28:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:28:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 22:28:13,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 22:28:13,280 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 187 flow. Second operand 5 states and 155 transitions. [2024-06-27 22:28:13,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 515 flow [2024-06-27 22:28:13,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 504 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:13,283 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 305 flow [2024-06-27 22:28:13,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-27 22:28:13,284 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 22:28:13,284 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 305 flow [2024-06-27 22:28:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:13,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:13,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:13,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:28:13,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:13,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1604768841, now seen corresponding path program 1 times [2024-06-27 22:28:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753596315] [2024-06-27 22:28:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:14,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:14,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753596315] [2024-06-27 22:28:14,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753596315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:14,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:14,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:14,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047604785] [2024-06-27 22:28:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:14,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:14,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:14,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:14,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:14,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:14,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:15,177 INFO L124 PetriNetUnfolderBase]: 3804/5785 cut-off events. [2024-06-27 22:28:15,177 INFO L125 PetriNetUnfolderBase]: For 6331/6331 co-relation queries the response was YES. [2024-06-27 22:28:15,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16799 conditions, 5785 events. 3804/5785 cut-off events. For 6331/6331 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 34416 event pairs, 1241 based on Foata normal form. 7/5525 useless extension candidates. Maximal degree in co-relation 16780. Up to 5076 conditions per place. [2024-06-27 22:28:15,210 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 88 selfloop transitions, 32 changer transitions 3/134 dead transitions. [2024-06-27 22:28:15,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 829 flow [2024-06-27 22:28:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-27 22:28:15,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-06-27 22:28:15,212 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 305 flow. Second operand 6 states and 190 transitions. [2024-06-27 22:28:15,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 829 flow [2024-06-27 22:28:15,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 134 transitions, 821 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:28:15,219 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 514 flow [2024-06-27 22:28:15,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-06-27 22:28:15,220 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2024-06-27 22:28:15,220 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 514 flow [2024-06-27 22:28:15,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:15,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:15,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:28:15,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1791774700, now seen corresponding path program 1 times [2024-06-27 22:28:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468063641] [2024-06-27 22:28:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:16,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468063641] [2024-06-27 22:28:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468063641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:16,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:16,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:16,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512257492] [2024-06-27 22:28:16,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:16,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:16,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:16,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:16,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:16,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:16,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:16,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:17,480 INFO L124 PetriNetUnfolderBase]: 4033/6563 cut-off events. [2024-06-27 22:28:17,480 INFO L125 PetriNetUnfolderBase]: For 13792/13792 co-relation queries the response was YES. [2024-06-27 22:28:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21512 conditions, 6563 events. 4033/6563 cut-off events. For 13792/13792 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42479 event pairs, 1306 based on Foata normal form. 26/6181 useless extension candidates. Maximal degree in co-relation 21486. Up to 5258 conditions per place. [2024-06-27 22:28:17,526 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 106 selfloop transitions, 25 changer transitions 4/145 dead transitions. [2024-06-27 22:28:17,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 145 transitions, 1032 flow [2024-06-27 22:28:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-27 22:28:17,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595108695652174 [2024-06-27 22:28:17,528 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 514 flow. Second operand 8 states and 219 transitions. [2024-06-27 22:28:17,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 145 transitions, 1032 flow [2024-06-27 22:28:17,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 992 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-06-27 22:28:17,545 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 597 flow [2024-06-27 22:28:17,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-27 22:28:17,547 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-27 22:28:17,547 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 597 flow [2024-06-27 22:28:17,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:17,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:17,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:17,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:28:17,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:17,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1153744439, now seen corresponding path program 1 times [2024-06-27 22:28:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:17,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628044377] [2024-06-27 22:28:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:17,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:18,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628044377] [2024-06-27 22:28:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628044377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963776049] [2024-06-27 22:28:18,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:18,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:18,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:28:18,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 597 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 22:28:18,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:18,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:28:18,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:19,766 INFO L124 PetriNetUnfolderBase]: 4581/7557 cut-off events. [2024-06-27 22:28:19,767 INFO L125 PetriNetUnfolderBase]: For 17100/17100 co-relation queries the response was YES. [2024-06-27 22:28:19,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24323 conditions, 7557 events. 4581/7557 cut-off events. For 17100/17100 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50058 event pairs, 1962 based on Foata normal form. 4/7108 useless extension candidates. Maximal degree in co-relation 24292. Up to 6551 conditions per place. [2024-06-27 22:28:19,809 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 82 selfloop transitions, 15 changer transitions 0/106 dead transitions. [2024-06-27 22:28:19,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 863 flow [2024-06-27 22:28:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:28:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:28:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 22:28:19,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347826086956522 [2024-06-27 22:28:19,811 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 597 flow. Second operand 5 states and 123 transitions. [2024-06-27 22:28:19,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 863 flow [2024-06-27 22:28:19,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 804 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:19,823 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 606 flow [2024-06-27 22:28:19,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=606, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-27 22:28:19,825 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-06-27 22:28:19,825 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 606 flow [2024-06-27 22:28:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 22:28:19,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:19,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:28:19,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:19,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash -210595213, now seen corresponding path program 1 times [2024-06-27 22:28:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:19,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111497396] [2024-06-27 22:28:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111497396] [2024-06-27 22:28:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111497396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453252874] [2024-06-27 22:28:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:20,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:20,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:20,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:20,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:20,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:20,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:20,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:21,868 INFO L124 PetriNetUnfolderBase]: 5757/8763 cut-off events. [2024-06-27 22:28:21,868 INFO L125 PetriNetUnfolderBase]: For 20158/20161 co-relation queries the response was YES. [2024-06-27 22:28:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 8763 events. 5757/8763 cut-off events. For 20158/20161 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 52769 event pairs, 2172 based on Foata normal form. 6/8375 useless extension candidates. Maximal degree in co-relation 28987. Up to 8095 conditions per place. [2024-06-27 22:28:21,921 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 93 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-06-27 22:28:21,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 1055 flow [2024-06-27 22:28:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:28:21,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:28:21,923 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 606 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:28:21,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 1055 flow [2024-06-27 22:28:21,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 1025 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:21,944 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 780 flow [2024-06-27 22:28:21,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-06-27 22:28:21,945 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-27 22:28:21,945 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 780 flow [2024-06-27 22:28:21,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:21,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:21,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:21,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:28:21,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:21,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:21,946 INFO L85 PathProgramCache]: Analyzing trace with hash -200268493, now seen corresponding path program 2 times [2024-06-27 22:28:21,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:21,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781822657] [2024-06-27 22:28:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:22,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781822657] [2024-06-27 22:28:22,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781822657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:22,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899519563] [2024-06-27 22:28:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:22,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:22,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:22,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:22,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:22,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:23,910 INFO L124 PetriNetUnfolderBase]: 5741/8822 cut-off events. [2024-06-27 22:28:23,910 INFO L125 PetriNetUnfolderBase]: For 24650/24650 co-relation queries the response was YES. [2024-06-27 22:28:23,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31202 conditions, 8822 events. 5741/8822 cut-off events. For 24650/24650 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 53764 event pairs, 2239 based on Foata normal form. 4/8410 useless extension candidates. Maximal degree in co-relation 31166. Up to 8168 conditions per place. [2024-06-27 22:28:23,950 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 100 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-06-27 22:28:23,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 125 transitions, 1103 flow [2024-06-27 22:28:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 22:28:23,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-27 22:28:23,951 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 780 flow. Second operand 6 states and 137 transitions. [2024-06-27 22:28:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 125 transitions, 1103 flow [2024-06-27 22:28:23,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 1076 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:23,973 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 840 flow [2024-06-27 22:28:23,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-06-27 22:28:23,974 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-06-27 22:28:23,974 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 840 flow [2024-06-27 22:28:23,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:23,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:23,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:28:23,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:23,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1112185287, now seen corresponding path program 3 times [2024-06-27 22:28:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:23,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892231809] [2024-06-27 22:28:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:25,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:25,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892231809] [2024-06-27 22:28:25,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892231809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:25,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:25,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:25,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491530135] [2024-06-27 22:28:25,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:25,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:25,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:25,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:25,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:25,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:28:25,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:25,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:25,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:28:25,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:26,536 INFO L124 PetriNetUnfolderBase]: 5426/8806 cut-off events. [2024-06-27 22:28:26,536 INFO L125 PetriNetUnfolderBase]: For 29209/29481 co-relation queries the response was YES. [2024-06-27 22:28:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31272 conditions, 8806 events. 5426/8806 cut-off events. For 29209/29481 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 57822 event pairs, 2080 based on Foata normal form. 10/8293 useless extension candidates. Maximal degree in co-relation 31233. Up to 7406 conditions per place. [2024-06-27 22:28:26,593 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 107 selfloop transitions, 61 changer transitions 0/180 dead transitions. [2024-06-27 22:28:26,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 180 transitions, 1773 flow [2024-06-27 22:28:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:28:26,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:28:26,595 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 840 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:28:26,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 180 transitions, 1773 flow [2024-06-27 22:28:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 180 transitions, 1725 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:26,625 INFO L231 Difference]: Finished difference. Result has 94 places, 144 transitions, 1406 flow [2024-06-27 22:28:26,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1406, PETRI_PLACES=94, PETRI_TRANSITIONS=144} [2024-06-27 22:28:26,626 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-06-27 22:28:26,626 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 144 transitions, 1406 flow [2024-06-27 22:28:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:26,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:26,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:28:26,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:26,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1476829142, now seen corresponding path program 1 times [2024-06-27 22:28:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095056555] [2024-06-27 22:28:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:27,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095056555] [2024-06-27 22:28:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095056555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:27,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:27,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:27,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567791386] [2024-06-27 22:28:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:27,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:27,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:27,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:27,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:27,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 144 transitions, 1406 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:27,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:27,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:27,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:28,939 INFO L124 PetriNetUnfolderBase]: 6209/10047 cut-off events. [2024-06-27 22:28:28,939 INFO L125 PetriNetUnfolderBase]: For 39880/39883 co-relation queries the response was YES. [2024-06-27 22:28:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38491 conditions, 10047 events. 6209/10047 cut-off events. For 39880/39883 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 65591 event pairs, 2316 based on Foata normal form. 12/9508 useless extension candidates. Maximal degree in co-relation 38450. Up to 8260 conditions per place. [2024-06-27 22:28:28,993 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 150 selfloop transitions, 61 changer transitions 3/222 dead transitions. [2024-06-27 22:28:28,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 222 transitions, 2476 flow [2024-06-27 22:28:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:28:28,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:28:28,995 INFO L175 Difference]: Start difference. First operand has 94 places, 144 transitions, 1406 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:28:28,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 222 transitions, 2476 flow [2024-06-27 22:28:29,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 222 transitions, 2391 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:29,049 INFO L231 Difference]: Finished difference. Result has 101 places, 168 transitions, 1906 flow [2024-06-27 22:28:29,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1906, PETRI_PLACES=101, PETRI_TRANSITIONS=168} [2024-06-27 22:28:29,050 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-27 22:28:29,051 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 168 transitions, 1906 flow [2024-06-27 22:28:29,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:29,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:29,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:29,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:28:29,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:29,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1913355274, now seen corresponding path program 2 times [2024-06-27 22:28:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296150030] [2024-06-27 22:28:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:29,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:30,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296150030] [2024-06-27 22:28:30,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296150030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:30,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:30,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:30,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878563102] [2024-06-27 22:28:30,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:30,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:30,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:30,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:30,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:30,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:30,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 168 transitions, 1906 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:30,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:30,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:30,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:31,358 INFO L124 PetriNetUnfolderBase]: 6223/10065 cut-off events. [2024-06-27 22:28:31,359 INFO L125 PetriNetUnfolderBase]: For 45831/45831 co-relation queries the response was YES. [2024-06-27 22:28:31,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40061 conditions, 10065 events. 6223/10065 cut-off events. For 45831/45831 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 65696 event pairs, 2346 based on Foata normal form. 5/9519 useless extension candidates. Maximal degree in co-relation 40016. Up to 8726 conditions per place. [2024-06-27 22:28:31,416 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 183 selfloop transitions, 25 changer transitions 2/218 dead transitions. [2024-06-27 22:28:31,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 218 transitions, 2628 flow [2024-06-27 22:28:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 22:28:31,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-27 22:28:31,417 INFO L175 Difference]: Start difference. First operand has 101 places, 168 transitions, 1906 flow. Second operand 7 states and 166 transitions. [2024-06-27 22:28:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 218 transitions, 2628 flow [2024-06-27 22:28:31,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 218 transitions, 2573 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:31,482 INFO L231 Difference]: Finished difference. Result has 107 places, 173 transitions, 2005 flow [2024-06-27 22:28:31,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2005, PETRI_PLACES=107, PETRI_TRANSITIONS=173} [2024-06-27 22:28:31,483 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-06-27 22:28:31,483 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 173 transitions, 2005 flow [2024-06-27 22:28:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:31,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:31,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:28:31,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:31,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1409942419, now seen corresponding path program 1 times [2024-06-27 22:28:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395824392] [2024-06-27 22:28:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395824392] [2024-06-27 22:28:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395824392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:31,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435668302] [2024-06-27 22:28:31,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:31,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:31,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:31,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:31,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 46 [2024-06-27 22:28:31,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 173 transitions, 2005 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 22:28:31,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:31,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 46 [2024-06-27 22:28:31,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:32,256 INFO L124 PetriNetUnfolderBase]: 2651/5177 cut-off events. [2024-06-27 22:28:32,256 INFO L125 PetriNetUnfolderBase]: For 18007/18759 co-relation queries the response was YES. [2024-06-27 22:28:32,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18569 conditions, 5177 events. 2651/5177 cut-off events. For 18007/18759 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40407 event pairs, 956 based on Foata normal form. 153/4894 useless extension candidates. Maximal degree in co-relation 18521. Up to 3160 conditions per place. [2024-06-27 22:28:32,299 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 77 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2024-06-27 22:28:32,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 187 transitions, 2215 flow [2024-06-27 22:28:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:28:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:28:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 22:28:32,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6902173913043478 [2024-06-27 22:28:32,301 INFO L175 Difference]: Start difference. First operand has 107 places, 173 transitions, 2005 flow. Second operand 4 states and 127 transitions. [2024-06-27 22:28:32,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 187 transitions, 2215 flow [2024-06-27 22:28:32,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 187 transitions, 2176 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:32,337 INFO L231 Difference]: Finished difference. Result has 106 places, 172 transitions, 1974 flow [2024-06-27 22:28:32,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1974, PETRI_PLACES=106, PETRI_TRANSITIONS=172} [2024-06-27 22:28:32,338 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-06-27 22:28:32,338 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 172 transitions, 1974 flow [2024-06-27 22:28:32,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 22:28:32,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:32,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:28:32,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:32,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1409956497, now seen corresponding path program 1 times [2024-06-27 22:28:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210427242] [2024-06-27 22:28:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210427242] [2024-06-27 22:28:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210427242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:34,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121129879] [2024-06-27 22:28:34,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:34,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:34,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:34,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:34,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 172 transitions, 1974 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:34,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:34,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:34,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:35,807 INFO L124 PetriNetUnfolderBase]: 5585/9051 cut-off events. [2024-06-27 22:28:35,808 INFO L125 PetriNetUnfolderBase]: For 46061/46061 co-relation queries the response was YES. [2024-06-27 22:28:35,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37264 conditions, 9051 events. 5585/9051 cut-off events. For 46061/46061 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 57432 event pairs, 1884 based on Foata normal form. 4/8796 useless extension candidates. Maximal degree in co-relation 37215. Up to 7862 conditions per place. [2024-06-27 22:28:35,863 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 182 selfloop transitions, 24 changer transitions 5/219 dead transitions. [2024-06-27 22:28:35,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 219 transitions, 2633 flow [2024-06-27 22:28:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 22:28:35,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 22:28:35,866 INFO L175 Difference]: Start difference. First operand has 106 places, 172 transitions, 1974 flow. Second operand 8 states and 176 transitions. [2024-06-27 22:28:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 219 transitions, 2633 flow [2024-06-27 22:28:35,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 219 transitions, 2611 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:35,926 INFO L231 Difference]: Finished difference. Result has 112 places, 180 transitions, 2127 flow [2024-06-27 22:28:35,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2127, PETRI_PLACES=112, PETRI_TRANSITIONS=180} [2024-06-27 22:28:35,926 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-27 22:28:35,926 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 180 transitions, 2127 flow [2024-06-27 22:28:35,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:35,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:35,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:35,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:28:35,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:35,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:35,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1437092905, now seen corresponding path program 1 times [2024-06-27 22:28:35,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:35,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305256860] [2024-06-27 22:28:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:35,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305256860] [2024-06-27 22:28:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305256860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:37,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:37,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:37,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316716544] [2024-06-27 22:28:37,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:37,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:37,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:37,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:37,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:37,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:37,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 180 transitions, 2127 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:37,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:37,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:37,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:38,300 INFO L124 PetriNetUnfolderBase]: 4889/8076 cut-off events. [2024-06-27 22:28:38,300 INFO L125 PetriNetUnfolderBase]: For 46604/46604 co-relation queries the response was YES. [2024-06-27 22:28:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34682 conditions, 8076 events. 4889/8076 cut-off events. For 46604/46604 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 51454 event pairs, 1602 based on Foata normal form. 3/7823 useless extension candidates. Maximal degree in co-relation 34631. Up to 6973 conditions per place. [2024-06-27 22:28:38,351 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 178 selfloop transitions, 13 changer transitions 0/199 dead transitions. [2024-06-27 22:28:38,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 199 transitions, 2589 flow [2024-06-27 22:28:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:28:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:28:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 22:28:38,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48695652173913045 [2024-06-27 22:28:38,353 INFO L175 Difference]: Start difference. First operand has 112 places, 180 transitions, 2127 flow. Second operand 5 states and 112 transitions. [2024-06-27 22:28:38,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 199 transitions, 2589 flow [2024-06-27 22:28:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 199 transitions, 2508 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:38,412 INFO L231 Difference]: Finished difference. Result has 111 places, 183 transitions, 2113 flow [2024-06-27 22:28:38,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2113, PETRI_PLACES=111, PETRI_TRANSITIONS=183} [2024-06-27 22:28:38,413 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 59 predicate places. [2024-06-27 22:28:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 183 transitions, 2113 flow [2024-06-27 22:28:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:38,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:38,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:28:38,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash 392592632, now seen corresponding path program 1 times [2024-06-27 22:28:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051681313] [2024-06-27 22:28:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:40,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:40,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051681313] [2024-06-27 22:28:40,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051681313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042328639] [2024-06-27 22:28:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:40,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:40,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:40,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 183 transitions, 2113 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:40,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:40,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:40,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:41,419 INFO L124 PetriNetUnfolderBase]: 5063/7719 cut-off events. [2024-06-27 22:28:41,419 INFO L125 PetriNetUnfolderBase]: For 50678/50681 co-relation queries the response was YES. [2024-06-27 22:28:41,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 7719 events. 5063/7719 cut-off events. For 50678/50681 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44711 event pairs, 1457 based on Foata normal form. 2/7613 useless extension candidates. Maximal degree in co-relation 35912. Up to 6770 conditions per place. [2024-06-27 22:28:41,469 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 176 selfloop transitions, 68 changer transitions 0/252 dead transitions. [2024-06-27 22:28:41,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 252 transitions, 3109 flow [2024-06-27 22:28:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:28:41,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:28:41,470 INFO L175 Difference]: Start difference. First operand has 111 places, 183 transitions, 2113 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:28:41,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 252 transitions, 3109 flow [2024-06-27 22:28:41,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 252 transitions, 3078 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:41,540 INFO L231 Difference]: Finished difference. Result has 117 places, 206 transitions, 2526 flow [2024-06-27 22:28:41,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2526, PETRI_PLACES=117, PETRI_TRANSITIONS=206} [2024-06-27 22:28:41,541 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-27 22:28:41,541 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 206 transitions, 2526 flow [2024-06-27 22:28:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:41,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:41,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:41,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:28:41,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:41,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1466661132, now seen corresponding path program 2 times [2024-06-27 22:28:41,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:41,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716556430] [2024-06-27 22:28:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:43,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:43,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716556430] [2024-06-27 22:28:43,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716556430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:43,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:43,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:43,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100468372] [2024-06-27 22:28:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:43,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:43,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:43,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:28:43,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 206 transitions, 2526 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:43,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:43,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:28:43,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:44,417 INFO L124 PetriNetUnfolderBase]: 4851/7509 cut-off events. [2024-06-27 22:28:44,417 INFO L125 PetriNetUnfolderBase]: For 58144/58232 co-relation queries the response was YES. [2024-06-27 22:28:44,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36794 conditions, 7509 events. 4851/7509 cut-off events. For 58144/58232 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 44869 event pairs, 1326 based on Foata normal form. 34/7374 useless extension candidates. Maximal degree in co-relation 36738. Up to 6428 conditions per place. [2024-06-27 22:28:44,475 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 154 selfloop transitions, 96 changer transitions 0/269 dead transitions. [2024-06-27 22:28:44,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 269 transitions, 3485 flow [2024-06-27 22:28:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:28:44,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:28:44,476 INFO L175 Difference]: Start difference. First operand has 117 places, 206 transitions, 2526 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:28:44,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 269 transitions, 3485 flow [2024-06-27 22:28:44,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 269 transitions, 3436 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:44,568 INFO L231 Difference]: Finished difference. Result has 125 places, 228 transitions, 3023 flow [2024-06-27 22:28:44,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3023, PETRI_PLACES=125, PETRI_TRANSITIONS=228} [2024-06-27 22:28:44,568 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 73 predicate places. [2024-06-27 22:28:44,569 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 228 transitions, 3023 flow [2024-06-27 22:28:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:44,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:28:44,569 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:44,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1131969672, now seen corresponding path program 1 times [2024-06-27 22:28:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:44,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755399150] [2024-06-27 22:28:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:45,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755399150] [2024-06-27 22:28:45,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755399150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:45,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:45,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:45,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853984104] [2024-06-27 22:28:45,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:45,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:45,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:45,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:46,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:46,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 228 transitions, 3023 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:46,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:46,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:46,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:47,334 INFO L124 PetriNetUnfolderBase]: 5175/8217 cut-off events. [2024-06-27 22:28:47,334 INFO L125 PetriNetUnfolderBase]: For 73077/73077 co-relation queries the response was YES. [2024-06-27 22:28:47,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42597 conditions, 8217 events. 5175/8217 cut-off events. For 73077/73077 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50465 event pairs, 1512 based on Foata normal form. 2/8027 useless extension candidates. Maximal degree in co-relation 42536. Up to 7282 conditions per place. [2024-06-27 22:28:47,395 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 241 selfloop transitions, 29 changer transitions 0/278 dead transitions. [2024-06-27 22:28:47,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 278 transitions, 4005 flow [2024-06-27 22:28:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 22:28:47,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-06-27 22:28:47,397 INFO L175 Difference]: Start difference. First operand has 125 places, 228 transitions, 3023 flow. Second operand 8 states and 169 transitions. [2024-06-27 22:28:47,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 278 transitions, 4005 flow [2024-06-27 22:28:47,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 278 transitions, 3926 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:47,529 INFO L231 Difference]: Finished difference. Result has 132 places, 240 transitions, 3267 flow [2024-06-27 22:28:47,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2958, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3267, PETRI_PLACES=132, PETRI_TRANSITIONS=240} [2024-06-27 22:28:47,530 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-06-27 22:28:47,530 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 240 transitions, 3267 flow [2024-06-27 22:28:47,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:47,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:47,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:47,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:28:47,531 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:47,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1446733596, now seen corresponding path program 2 times [2024-06-27 22:28:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008760434] [2024-06-27 22:28:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:48,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:48,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008760434] [2024-06-27 22:28:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008760434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:48,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:48,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:48,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140939331] [2024-06-27 22:28:48,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:48,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:48,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:48,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 240 transitions, 3267 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:48,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:48,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:50,102 INFO L124 PetriNetUnfolderBase]: 5170/8207 cut-off events. [2024-06-27 22:28:50,103 INFO L125 PetriNetUnfolderBase]: For 75897/75897 co-relation queries the response was YES. [2024-06-27 22:28:50,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42895 conditions, 8207 events. 5170/8207 cut-off events. For 75897/75897 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50374 event pairs, 1503 based on Foata normal form. 2/8017 useless extension candidates. Maximal degree in co-relation 42831. Up to 7297 conditions per place. [2024-06-27 22:28:50,172 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 241 selfloop transitions, 40 changer transitions 0/289 dead transitions. [2024-06-27 22:28:50,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 289 transitions, 4155 flow [2024-06-27 22:28:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 22:28:50,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-27 22:28:50,174 INFO L175 Difference]: Start difference. First operand has 132 places, 240 transitions, 3267 flow. Second operand 8 states and 178 transitions. [2024-06-27 22:28:50,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 289 transitions, 4155 flow [2024-06-27 22:28:50,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 289 transitions, 4096 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:50,298 INFO L231 Difference]: Finished difference. Result has 135 places, 255 transitions, 3535 flow [2024-06-27 22:28:50,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3535, PETRI_PLACES=135, PETRI_TRANSITIONS=255} [2024-06-27 22:28:50,299 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2024-06-27 22:28:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 255 transitions, 3535 flow [2024-06-27 22:28:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:50,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:50,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:28:50,300 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:50,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 418183300, now seen corresponding path program 3 times [2024-06-27 22:28:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634842525] [2024-06-27 22:28:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634842525] [2024-06-27 22:28:51,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634842525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:51,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:51,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131564036] [2024-06-27 22:28:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:51,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:51,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:51,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:51,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 255 transitions, 3535 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 22:28:51,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:51,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:51,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:53,132 INFO L124 PetriNetUnfolderBase]: 4700/7649 cut-off events. [2024-06-27 22:28:53,132 INFO L125 PetriNetUnfolderBase]: For 78027/78194 co-relation queries the response was YES. [2024-06-27 22:28:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39945 conditions, 7649 events. 4700/7649 cut-off events. For 78027/78194 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 49433 event pairs, 1531 based on Foata normal form. 57/7416 useless extension candidates. Maximal degree in co-relation 39881. Up to 5571 conditions per place. [2024-06-27 22:28:53,190 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 192 selfloop transitions, 93 changer transitions 0/308 dead transitions. [2024-06-27 22:28:53,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 308 transitions, 4522 flow [2024-06-27 22:28:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 22:28:53,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562111801242236 [2024-06-27 22:28:53,192 INFO L175 Difference]: Start difference. First operand has 135 places, 255 transitions, 3535 flow. Second operand 7 states and 181 transitions. [2024-06-27 22:28:53,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 308 transitions, 4522 flow [2024-06-27 22:28:53,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 308 transitions, 4445 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:53,314 INFO L231 Difference]: Finished difference. Result has 138 places, 268 transitions, 3814 flow [2024-06-27 22:28:53,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3814, PETRI_PLACES=138, PETRI_TRANSITIONS=268} [2024-06-27 22:28:53,315 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-27 22:28:53,315 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 268 transitions, 3814 flow [2024-06-27 22:28:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 22:28:53,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:53,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:53,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:28:53,316 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:53,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 428364010, now seen corresponding path program 4 times [2024-06-27 22:28:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:53,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880100197] [2024-06-27 22:28:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:53,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:54,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:54,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880100197] [2024-06-27 22:28:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880100197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:54,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:54,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098609424] [2024-06-27 22:28:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:54,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:54,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:54,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 268 transitions, 3814 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 22:28:54,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:54,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:54,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:55,886 INFO L124 PetriNetUnfolderBase]: 4710/7569 cut-off events. [2024-06-27 22:28:55,886 INFO L125 PetriNetUnfolderBase]: For 87562/87716 co-relation queries the response was YES. [2024-06-27 22:28:55,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41766 conditions, 7569 events. 4710/7569 cut-off events. For 87562/87716 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 48105 event pairs, 1248 based on Foata normal form. 71/7374 useless extension candidates. Maximal degree in co-relation 41700. Up to 5703 conditions per place. [2024-06-27 22:28:55,961 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 153 selfloop transitions, 138 changer transitions 0/314 dead transitions. [2024-06-27 22:28:55,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 314 transitions, 4800 flow [2024-06-27 22:28:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:28:55,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590062111801242 [2024-06-27 22:28:55,963 INFO L175 Difference]: Start difference. First operand has 138 places, 268 transitions, 3814 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:28:55,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 314 transitions, 4800 flow [2024-06-27 22:28:56,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 314 transitions, 4695 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:56,149 INFO L231 Difference]: Finished difference. Result has 143 places, 274 transitions, 4151 flow [2024-06-27 22:28:56,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3709, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4151, PETRI_PLACES=143, PETRI_TRANSITIONS=274} [2024-06-27 22:28:56,150 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-06-27 22:28:56,150 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 274 transitions, 4151 flow [2024-06-27 22:28:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 22:28:56,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:56,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:56,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:28:56,150 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:56,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash 626093984, now seen corresponding path program 3 times [2024-06-27 22:28:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:56,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184250600] [2024-06-27 22:28:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:57,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184250600] [2024-06-27 22:28:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184250600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022145049] [2024-06-27 22:28:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:57,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:28:57,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 274 transitions, 4151 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:57,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:57,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:28:57,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:59,510 INFO L124 PetriNetUnfolderBase]: 5340/8309 cut-off events. [2024-06-27 22:28:59,510 INFO L125 PetriNetUnfolderBase]: For 101240/101266 co-relation queries the response was YES. [2024-06-27 22:28:59,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48999 conditions, 8309 events. 5340/8309 cut-off events. For 101240/101266 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 50120 event pairs, 1349 based on Foata normal form. 24/8169 useless extension candidates. Maximal degree in co-relation 48930. Up to 6860 conditions per place. [2024-06-27 22:28:59,577 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 243 selfloop transitions, 122 changer transitions 0/373 dead transitions. [2024-06-27 22:28:59,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 373 transitions, 6118 flow [2024-06-27 22:28:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:28:59,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590062111801242 [2024-06-27 22:28:59,579 INFO L175 Difference]: Start difference. First operand has 143 places, 274 transitions, 4151 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:28:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 373 transitions, 6118 flow [2024-06-27 22:28:59,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 373 transitions, 5863 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:59,769 INFO L231 Difference]: Finished difference. Result has 149 places, 320 transitions, 5132 flow [2024-06-27 22:28:59,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5132, PETRI_PLACES=149, PETRI_TRANSITIONS=320} [2024-06-27 22:28:59,769 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-06-27 22:28:59,769 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 320 transitions, 5132 flow [2024-06-27 22:28:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:59,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:59,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:28:59,770 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:59,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash 987605177, now seen corresponding path program 1 times [2024-06-27 22:28:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:59,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729284181] [2024-06-27 22:28:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729284181] [2024-06-27 22:29:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729284181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688985836] [2024-06-27 22:29:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:02,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:02,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:29:02,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 320 transitions, 5132 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:02,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:02,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:29:02,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:03,907 INFO L124 PetriNetUnfolderBase]: 5849/9591 cut-off events. [2024-06-27 22:29:03,907 INFO L125 PetriNetUnfolderBase]: For 123311/123424 co-relation queries the response was YES. [2024-06-27 22:29:03,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54497 conditions, 9591 events. 5849/9591 cut-off events. For 123311/123424 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 63703 event pairs, 1602 based on Foata normal form. 50/9275 useless extension candidates. Maximal degree in co-relation 54426. Up to 6331 conditions per place. [2024-06-27 22:29:03,994 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 220 selfloop transitions, 158 changer transitions 0/400 dead transitions. [2024-06-27 22:29:03,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 400 transitions, 6595 flow [2024-06-27 22:29:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:29:03,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:29:03,995 INFO L175 Difference]: Start difference. First operand has 149 places, 320 transitions, 5132 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:29:03,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 400 transitions, 6595 flow [2024-06-27 22:29:04,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 400 transitions, 6517 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-06-27 22:29:04,240 INFO L231 Difference]: Finished difference. Result has 158 places, 337 transitions, 5703 flow [2024-06-27 22:29:04,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5068, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5703, PETRI_PLACES=158, PETRI_TRANSITIONS=337} [2024-06-27 22:29:04,240 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-27 22:29:04,241 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 337 transitions, 5703 flow [2024-06-27 22:29:04,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:04,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:04,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:29:04,241 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:04,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash 987665627, now seen corresponding path program 2 times [2024-06-27 22:29:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:04,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557452124] [2024-06-27 22:29:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:04,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557452124] [2024-06-27 22:29:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557452124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:06,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:06,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742221033] [2024-06-27 22:29:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:06,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:06,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:29:06,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 337 transitions, 5703 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:06,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:06,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:29:06,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:08,560 INFO L124 PetriNetUnfolderBase]: 6070/9870 cut-off events. [2024-06-27 22:29:08,560 INFO L125 PetriNetUnfolderBase]: For 146532/146680 co-relation queries the response was YES. [2024-06-27 22:29:08,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59625 conditions, 9870 events. 6070/9870 cut-off events. For 146532/146680 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 65775 event pairs, 1775 based on Foata normal form. 57/9558 useless extension candidates. Maximal degree in co-relation 59549. Up to 7307 conditions per place. [2024-06-27 22:29:08,655 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 216 selfloop transitions, 157 changer transitions 0/395 dead transitions. [2024-06-27 22:29:08,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 395 transitions, 6885 flow [2024-06-27 22:29:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:29:08,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:29:08,657 INFO L175 Difference]: Start difference. First operand has 158 places, 337 transitions, 5703 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:29:08,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 395 transitions, 6885 flow [2024-06-27 22:29:08,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 395 transitions, 6835 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:29:08,985 INFO L231 Difference]: Finished difference. Result has 165 places, 339 transitions, 6071 flow [2024-06-27 22:29:08,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5653, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6071, PETRI_PLACES=165, PETRI_TRANSITIONS=339} [2024-06-27 22:29:08,986 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-27 22:29:08,986 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 339 transitions, 6071 flow [2024-06-27 22:29:08,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:08,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:08,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:29:08,987 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:08,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash 990462137, now seen corresponding path program 3 times [2024-06-27 22:29:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306124577] [2024-06-27 22:29:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:10,494 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 22:29:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306124577] [2024-06-27 22:29:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306124577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:10,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:10,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499541284] [2024-06-27 22:29:10,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:10,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:10,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:10,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:10,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:29:10,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 339 transitions, 6071 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:10,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:10,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:29:10,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:12,410 INFO L124 PetriNetUnfolderBase]: 6199/9665 cut-off events. [2024-06-27 22:29:12,410 INFO L125 PetriNetUnfolderBase]: For 160151/160292 co-relation queries the response was YES. [2024-06-27 22:29:12,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61855 conditions, 9665 events. 6199/9665 cut-off events. For 160151/160292 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61250 event pairs, 1753 based on Foata normal form. 61/9467 useless extension candidates. Maximal degree in co-relation 61776. Up to 8088 conditions per place. [2024-06-27 22:29:12,511 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 253 selfloop transitions, 118 changer transitions 0/393 dead transitions. [2024-06-27 22:29:12,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 393 transitions, 7222 flow [2024-06-27 22:29:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 22:29:12,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:29:12,512 INFO L175 Difference]: Start difference. First operand has 165 places, 339 transitions, 6071 flow. Second operand 8 states and 200 transitions. [2024-06-27 22:29:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 393 transitions, 7222 flow [2024-06-27 22:29:12,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 393 transitions, 6901 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:12,929 INFO L231 Difference]: Finished difference. Result has 168 places, 340 transitions, 6022 flow [2024-06-27 22:29:12,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5750, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6022, PETRI_PLACES=168, PETRI_TRANSITIONS=340} [2024-06-27 22:29:12,930 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-06-27 22:29:12,930 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 340 transitions, 6022 flow [2024-06-27 22:29:12,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:12,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:12,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:12,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:29:12,930 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:12,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1105938005, now seen corresponding path program 1 times [2024-06-27 22:29:12,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:12,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683309248] [2024-06-27 22:29:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:12,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683309248] [2024-06-27 22:29:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683309248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:14,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:14,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969475277] [2024-06-27 22:29:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:14,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:14,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:14,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:14,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 340 transitions, 6022 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 22:29:14,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:14,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:14,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:16,425 INFO L124 PetriNetUnfolderBase]: 6545/10688 cut-off events. [2024-06-27 22:29:16,425 INFO L125 PetriNetUnfolderBase]: For 161106/161112 co-relation queries the response was YES. [2024-06-27 22:29:16,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64565 conditions, 10688 events. 6545/10688 cut-off events. For 161106/161112 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 71424 event pairs, 2015 based on Foata normal form. 12/10404 useless extension candidates. Maximal degree in co-relation 64485. Up to 8644 conditions per place. [2024-06-27 22:29:16,520 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 280 selfloop transitions, 106 changer transitions 0/394 dead transitions. [2024-06-27 22:29:16,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 394 transitions, 7118 flow [2024-06-27 22:29:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:29:16,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 22:29:16,522 INFO L175 Difference]: Start difference. First operand has 168 places, 340 transitions, 6022 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:29:16,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 394 transitions, 7118 flow [2024-06-27 22:29:16,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 394 transitions, 6947 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:16,879 INFO L231 Difference]: Finished difference. Result has 171 places, 343 transitions, 6110 flow [2024-06-27 22:29:16,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6110, PETRI_PLACES=171, PETRI_TRANSITIONS=343} [2024-06-27 22:29:16,880 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-27 22:29:16,880 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 343 transitions, 6110 flow [2024-06-27 22:29:16,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 22:29:16,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:16,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:16,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:29:16,880 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:16,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1945521177, now seen corresponding path program 1 times [2024-06-27 22:29:16,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:16,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077082864] [2024-06-27 22:29:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077082864] [2024-06-27 22:29:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077082864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:18,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:29:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641629793] [2024-06-27 22:29:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:18,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:29:18,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:29:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:29:18,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:18,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 343 transitions, 6110 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:18,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:18,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:18,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:19,755 INFO L124 PetriNetUnfolderBase]: 6572/10231 cut-off events. [2024-06-27 22:29:19,756 INFO L125 PetriNetUnfolderBase]: For 164852/164854 co-relation queries the response was YES. [2024-06-27 22:29:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64880 conditions, 10231 events. 6572/10231 cut-off events. For 164852/164854 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 64034 event pairs, 2025 based on Foata normal form. 3/10065 useless extension candidates. Maximal degree in co-relation 64799. Up to 9434 conditions per place. [2024-06-27 22:29:19,865 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 344 selfloop transitions, 26 changer transitions 0/378 dead transitions. [2024-06-27 22:29:19,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 378 transitions, 7156 flow [2024-06-27 22:29:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:29:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:29:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 22:29:19,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-06-27 22:29:19,866 INFO L175 Difference]: Start difference. First operand has 171 places, 343 transitions, 6110 flow. Second operand 6 states and 133 transitions. [2024-06-27 22:29:19,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 378 transitions, 7156 flow [2024-06-27 22:29:20,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 378 transitions, 6990 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:20,330 INFO L231 Difference]: Finished difference. Result has 174 places, 358 transitions, 6217 flow [2024-06-27 22:29:20,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5944, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6217, PETRI_PLACES=174, PETRI_TRANSITIONS=358} [2024-06-27 22:29:20,331 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-27 22:29:20,331 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 358 transitions, 6217 flow [2024-06-27 22:29:20,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:20,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:20,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:20,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:29:20,332 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:20,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:20,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2059260755, now seen corresponding path program 2 times [2024-06-27 22:29:20,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:20,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277630507] [2024-06-27 22:29:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:20,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277630507] [2024-06-27 22:29:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277630507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791397529] [2024-06-27 22:29:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:22,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 358 transitions, 6217 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 22:29:22,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:22,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:22,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:23,841 INFO L124 PetriNetUnfolderBase]: 6609/10287 cut-off events. [2024-06-27 22:29:23,841 INFO L125 PetriNetUnfolderBase]: For 172785/172785 co-relation queries the response was YES. [2024-06-27 22:29:23,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65801 conditions, 10287 events. 6609/10287 cut-off events. For 172785/172785 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 64354 event pairs, 2022 based on Foata normal form. 4/10120 useless extension candidates. Maximal degree in co-relation 65716. Up to 9283 conditions per place. [2024-06-27 22:29:23,944 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 353 selfloop transitions, 53 changer transitions 0/414 dead transitions. [2024-06-27 22:29:23,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 414 transitions, 7407 flow [2024-06-27 22:29:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 22:29:23,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2024-06-27 22:29:23,945 INFO L175 Difference]: Start difference. First operand has 174 places, 358 transitions, 6217 flow. Second operand 9 states and 193 transitions. [2024-06-27 22:29:23,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 414 transitions, 7407 flow [2024-06-27 22:29:24,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 414 transitions, 7354 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-27 22:29:24,509 INFO L231 Difference]: Finished difference. Result has 182 places, 360 transitions, 6318 flow [2024-06-27 22:29:24,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6164, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6318, PETRI_PLACES=182, PETRI_TRANSITIONS=360} [2024-06-27 22:29:24,509 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 130 predicate places. [2024-06-27 22:29:24,509 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 360 transitions, 6318 flow [2024-06-27 22:29:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 22:29:24,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:24,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:24,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:29:24,510 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:24,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1889901351, now seen corresponding path program 3 times [2024-06-27 22:29:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:24,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542032783] [2024-06-27 22:29:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:24,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:26,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542032783] [2024-06-27 22:29:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542032783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:26,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:26,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:29:26,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058306442] [2024-06-27 22:29:26,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:26,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:29:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:29:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:29:26,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:26,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 360 transitions, 6318 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:26,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:26,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:26,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:28,011 INFO L124 PetriNetUnfolderBase]: 6677/10406 cut-off events. [2024-06-27 22:29:28,011 INFO L125 PetriNetUnfolderBase]: For 184497/184497 co-relation queries the response was YES. [2024-06-27 22:29:28,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67385 conditions, 10406 events. 6677/10406 cut-off events. For 184497/184497 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 65335 event pairs, 2033 based on Foata normal form. 4/10235 useless extension candidates. Maximal degree in co-relation 67297. Up to 9438 conditions per place. [2024-06-27 22:29:28,125 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 357 selfloop transitions, 42 changer transitions 0/407 dead transitions. [2024-06-27 22:29:28,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 407 transitions, 7426 flow [2024-06-27 22:29:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 22:29:28,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 22:29:28,126 INFO L175 Difference]: Start difference. First operand has 182 places, 360 transitions, 6318 flow. Second operand 8 states and 180 transitions. [2024-06-27 22:29:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 407 transitions, 7426 flow [2024-06-27 22:29:28,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 407 transitions, 7293 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:28,628 INFO L231 Difference]: Finished difference. Result has 184 places, 364 transitions, 6367 flow [2024-06-27 22:29:28,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6215, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6367, PETRI_PLACES=184, PETRI_TRANSITIONS=364} [2024-06-27 22:29:28,629 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-27 22:29:28,629 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 364 transitions, 6367 flow [2024-06-27 22:29:28,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:28,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:28,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:28,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:29:28,629 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:28,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1997690891, now seen corresponding path program 4 times [2024-06-27 22:29:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711780711] [2024-06-27 22:29:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711780711] [2024-06-27 22:29:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711780711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:30,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:30,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:29:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851816157] [2024-06-27 22:29:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:30,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:29:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:29:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:29:30,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:30,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 364 transitions, 6367 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:30,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:30,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:32,147 INFO L124 PetriNetUnfolderBase]: 6729/10511 cut-off events. [2024-06-27 22:29:32,147 INFO L125 PetriNetUnfolderBase]: For 193443/193443 co-relation queries the response was YES. [2024-06-27 22:29:32,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68249 conditions, 10511 events. 6729/10511 cut-off events. For 193443/193443 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 66392 event pairs, 2024 based on Foata normal form. 4/10331 useless extension candidates. Maximal degree in co-relation 68160. Up to 9416 conditions per place. [2024-06-27 22:29:32,263 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 352 selfloop transitions, 61 changer transitions 0/421 dead transitions. [2024-06-27 22:29:32,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 421 transitions, 7616 flow [2024-06-27 22:29:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-27 22:29:32,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-06-27 22:29:32,265 INFO L175 Difference]: Start difference. First operand has 184 places, 364 transitions, 6367 flow. Second operand 9 states and 195 transitions. [2024-06-27 22:29:32,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 421 transitions, 7616 flow [2024-06-27 22:29:32,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 421 transitions, 7516 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:32,945 INFO L231 Difference]: Finished difference. Result has 188 places, 371 transitions, 6583 flow [2024-06-27 22:29:32,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6267, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6583, PETRI_PLACES=188, PETRI_TRANSITIONS=371} [2024-06-27 22:29:32,946 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-27 22:29:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 371 transitions, 6583 flow [2024-06-27 22:29:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:32,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:32,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:32,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:29:32,947 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:32,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1899069043, now seen corresponding path program 1 times [2024-06-27 22:29:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443676713] [2024-06-27 22:29:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:32,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443676713] [2024-06-27 22:29:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443676713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:34,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:34,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280304361] [2024-06-27 22:29:34,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:34,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:34,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:34,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 371 transitions, 6583 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 22:29:34,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:34,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:34,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:36,212 INFO L124 PetriNetUnfolderBase]: 6721/10470 cut-off events. [2024-06-27 22:29:36,213 INFO L125 PetriNetUnfolderBase]: For 199763/199771 co-relation queries the response was YES. [2024-06-27 22:29:36,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68858 conditions, 10470 events. 6721/10470 cut-off events. For 199763/199771 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 65787 event pairs, 2031 based on Foata normal form. 8/10300 useless extension candidates. Maximal degree in co-relation 68767. Up to 9263 conditions per place. [2024-06-27 22:29:36,345 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 302 selfloop transitions, 100 changer transitions 0/410 dead transitions. [2024-06-27 22:29:36,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 410 transitions, 7665 flow [2024-06-27 22:29:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:29:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:29:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 22:29:36,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-27 22:29:36,347 INFO L175 Difference]: Start difference. First operand has 188 places, 371 transitions, 6583 flow. Second operand 7 states and 165 transitions. [2024-06-27 22:29:36,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 410 transitions, 7665 flow [2024-06-27 22:29:36,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 410 transitions, 7514 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:36,930 INFO L231 Difference]: Finished difference. Result has 190 places, 379 transitions, 6874 flow [2024-06-27 22:29:36,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6436, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6874, PETRI_PLACES=190, PETRI_TRANSITIONS=379} [2024-06-27 22:29:36,930 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 22:29:36,931 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 379 transitions, 6874 flow [2024-06-27 22:29:36,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 22:29:36,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:36,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:29:36,931 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:36,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:36,931 INFO L85 PathProgramCache]: Analyzing trace with hash -721827249, now seen corresponding path program 5 times [2024-06-27 22:29:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:36,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009398050] [2024-06-27 22:29:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:36,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009398050] [2024-06-27 22:29:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009398050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:38,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:38,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:29:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857978897] [2024-06-27 22:29:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:38,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:29:38,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:38,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:29:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:29:38,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:38,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 379 transitions, 6874 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:38,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:38,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:40,398 INFO L124 PetriNetUnfolderBase]: 6766/10546 cut-off events. [2024-06-27 22:29:40,399 INFO L125 PetriNetUnfolderBase]: For 212448/212448 co-relation queries the response was YES. [2024-06-27 22:29:40,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70050 conditions, 10546 events. 6766/10546 cut-off events. For 212448/212448 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 66382 event pairs, 2006 based on Foata normal form. 4/10370 useless extension candidates. Maximal degree in co-relation 69957. Up to 9626 conditions per place. [2024-06-27 22:29:40,523 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 383 selfloop transitions, 32 changer transitions 0/423 dead transitions. [2024-06-27 22:29:40,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 423 transitions, 7938 flow [2024-06-27 22:29:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 22:29:40,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2024-06-27 22:29:40,525 INFO L175 Difference]: Start difference. First operand has 190 places, 379 transitions, 6874 flow. Second operand 9 states and 193 transitions. [2024-06-27 22:29:40,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 423 transitions, 7938 flow [2024-06-27 22:29:41,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 423 transitions, 7822 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:29:41,045 INFO L231 Difference]: Finished difference. Result has 196 places, 385 transitions, 6931 flow [2024-06-27 22:29:41,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6758, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6931, PETRI_PLACES=196, PETRI_TRANSITIONS=385} [2024-06-27 22:29:41,046 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-27 22:29:41,046 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 385 transitions, 6931 flow [2024-06-27 22:29:41,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:41,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:41,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:41,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:29:41,046 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:41,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1933170777, now seen corresponding path program 2 times [2024-06-27 22:29:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479080183] [2024-06-27 22:29:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:41,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:42,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:42,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479080183] [2024-06-27 22:29:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479080183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:42,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:29:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435881245] [2024-06-27 22:29:42,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:42,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:29:42,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:29:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:29:42,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:42,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 385 transitions, 6931 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:42,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:42,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:42,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:43,981 INFO L124 PetriNetUnfolderBase]: 6802/10592 cut-off events. [2024-06-27 22:29:43,981 INFO L125 PetriNetUnfolderBase]: For 224287/224287 co-relation queries the response was YES. [2024-06-27 22:29:44,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71075 conditions, 10592 events. 6802/10592 cut-off events. For 224287/224287 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 66642 event pairs, 2083 based on Foata normal form. 3/10417 useless extension candidates. Maximal degree in co-relation 70980. Up to 9765 conditions per place. [2024-06-27 22:29:44,105 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 382 selfloop transitions, 20 changer transitions 0/410 dead transitions. [2024-06-27 22:29:44,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 410 transitions, 7901 flow [2024-06-27 22:29:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:29:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:29:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 22:29:44,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-06-27 22:29:44,106 INFO L175 Difference]: Start difference. First operand has 196 places, 385 transitions, 6931 flow. Second operand 6 states and 130 transitions. [2024-06-27 22:29:44,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 410 transitions, 7901 flow [2024-06-27 22:29:44,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 410 transitions, 7775 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:44,685 INFO L231 Difference]: Finished difference. Result has 198 places, 392 transitions, 6964 flow [2024-06-27 22:29:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6809, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6964, PETRI_PLACES=198, PETRI_TRANSITIONS=392} [2024-06-27 22:29:44,685 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 146 predicate places. [2024-06-27 22:29:44,685 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 392 transitions, 6964 flow [2024-06-27 22:29:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:44,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:44,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:29:44,686 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash 76039361, now seen corresponding path program 4 times [2024-06-27 22:29:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:44,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595090984] [2024-06-27 22:29:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:46,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595090984] [2024-06-27 22:29:46,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595090984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:46,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:46,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140863560] [2024-06-27 22:29:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:46,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:46,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:46,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:46,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:46,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 392 transitions, 6964 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:46,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:46,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:46,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:48,335 INFO L124 PetriNetUnfolderBase]: 6304/9914 cut-off events. [2024-06-27 22:29:48,335 INFO L125 PetriNetUnfolderBase]: For 244149/244340 co-relation queries the response was YES. [2024-06-27 22:29:48,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68342 conditions, 9914 events. 6304/9914 cut-off events. For 244149/244340 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 64531 event pairs, 1147 based on Foata normal form. 73/9685 useless extension candidates. Maximal degree in co-relation 68243. Up to 5689 conditions per place. [2024-06-27 22:29:48,455 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 222 selfloop transitions, 200 changer transitions 0/448 dead transitions. [2024-06-27 22:29:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 448 transitions, 8274 flow [2024-06-27 22:29:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:29:48,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-06-27 22:29:48,468 INFO L175 Difference]: Start difference. First operand has 198 places, 392 transitions, 6964 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:29:48,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 448 transitions, 8274 flow [2024-06-27 22:29:49,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 448 transitions, 8205 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:29:49,112 INFO L231 Difference]: Finished difference. Result has 203 places, 394 transitions, 7366 flow [2024-06-27 22:29:49,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6895, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7366, PETRI_PLACES=203, PETRI_TRANSITIONS=394} [2024-06-27 22:29:49,112 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 22:29:49,113 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 394 transitions, 7366 flow [2024-06-27 22:29:49,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:49,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:29:49,113 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:49,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash 76099811, now seen corresponding path program 5 times [2024-06-27 22:29:49,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904549943] [2024-06-27 22:29:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:50,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904549943] [2024-06-27 22:29:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904549943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:50,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:50,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:50,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844212030] [2024-06-27 22:29:50,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:50,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:50,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 394 transitions, 7366 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:50,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:50,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:50,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:52,844 INFO L124 PetriNetUnfolderBase]: 6474/10402 cut-off events. [2024-06-27 22:29:52,844 INFO L125 PetriNetUnfolderBase]: For 274329/274511 co-relation queries the response was YES. [2024-06-27 22:29:52,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72419 conditions, 10402 events. 6474/10402 cut-off events. For 274329/274511 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 69837 event pairs, 1731 based on Foata normal form. 73/10133 useless extension candidates. Maximal degree in co-relation 72318. Up to 7465 conditions per place. [2024-06-27 22:29:52,978 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 223 selfloop transitions, 195 changer transitions 0/444 dead transitions. [2024-06-27 22:29:52,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 444 transitions, 8508 flow [2024-06-27 22:29:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:29:52,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-27 22:29:52,979 INFO L175 Difference]: Start difference. First operand has 203 places, 394 transitions, 7366 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:29:52,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 444 transitions, 8508 flow [2024-06-27 22:29:53,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 444 transitions, 8250 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:53,707 INFO L231 Difference]: Finished difference. Result has 206 places, 395 transitions, 7546 flow [2024-06-27 22:29:53,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7108, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7546, PETRI_PLACES=206, PETRI_TRANSITIONS=395} [2024-06-27 22:29:53,708 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-27 22:29:53,708 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 395 transitions, 7546 flow [2024-06-27 22:29:53,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:53,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:53,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:53,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:29:53,708 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:53,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 394383011, now seen corresponding path program 6 times [2024-06-27 22:29:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34594617] [2024-06-27 22:29:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:55,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34594617] [2024-06-27 22:29:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34594617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:55,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:55,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:55,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752234680] [2024-06-27 22:29:55,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:55,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:55,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 395 transitions, 7546 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:55,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:55,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:55,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:57,383 INFO L124 PetriNetUnfolderBase]: 6556/10542 cut-off events. [2024-06-27 22:29:57,383 INFO L125 PetriNetUnfolderBase]: For 270132/270301 co-relation queries the response was YES. [2024-06-27 22:29:57,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73299 conditions, 10542 events. 6556/10542 cut-off events. For 270132/270301 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 70990 event pairs, 1829 based on Foata normal form. 102/10297 useless extension candidates. Maximal degree in co-relation 73197. Up to 7708 conditions per place. [2024-06-27 22:29:57,495 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 230 selfloop transitions, 189 changer transitions 0/445 dead transitions. [2024-06-27 22:29:57,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 445 transitions, 8691 flow [2024-06-27 22:29:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:29:57,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:29:57,496 INFO L175 Difference]: Start difference. First operand has 206 places, 395 transitions, 7546 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:29:57,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 445 transitions, 8691 flow [2024-06-27 22:29:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 445 transitions, 8293 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:58,127 INFO L231 Difference]: Finished difference. Result has 208 places, 396 transitions, 7574 flow [2024-06-27 22:29:58,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7148, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7574, PETRI_PLACES=208, PETRI_TRANSITIONS=396} [2024-06-27 22:29:58,128 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 156 predicate places. [2024-06-27 22:29:58,128 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 396 transitions, 7574 flow [2024-06-27 22:29:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:58,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:58,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:58,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:29:58,128 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:58,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1371359857, now seen corresponding path program 6 times [2024-06-27 22:29:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356730517] [2024-06-27 22:29:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:59,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356730517] [2024-06-27 22:29:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356730517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:59,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:59,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:29:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552143726] [2024-06-27 22:29:59,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:59,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:29:59,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:29:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:29:59,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:29:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 396 transitions, 7574 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:59,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:29:59,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:02,478 INFO L124 PetriNetUnfolderBase]: 7455/12385 cut-off events. [2024-06-27 22:30:02,478 INFO L125 PetriNetUnfolderBase]: For 268708/268730 co-relation queries the response was YES. [2024-06-27 22:30:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81572 conditions, 12385 events. 7455/12385 cut-off events. For 268708/268730 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 85880 event pairs, 1974 based on Foata normal form. 24/12026 useless extension candidates. Maximal degree in co-relation 81469. Up to 9972 conditions per place. [2024-06-27 22:30:02,627 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 323 selfloop transitions, 134 changer transitions 0/465 dead transitions. [2024-06-27 22:30:02,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 465 transitions, 9154 flow [2024-06-27 22:30:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:30:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:30:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:30:02,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 22:30:02,629 INFO L175 Difference]: Start difference. First operand has 208 places, 396 transitions, 7574 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:30:02,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 465 transitions, 9154 flow [2024-06-27 22:30:03,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 465 transitions, 8706 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:30:03,274 INFO L231 Difference]: Finished difference. Result has 210 places, 403 transitions, 7515 flow [2024-06-27 22:30:03,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7134, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7515, PETRI_PLACES=210, PETRI_TRANSITIONS=403} [2024-06-27 22:30:03,275 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 158 predicate places. [2024-06-27 22:30:03,275 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 403 transitions, 7515 flow [2024-06-27 22:30:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:03,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:03,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:03,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:30:03,275 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:03,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1126712411, now seen corresponding path program 3 times [2024-06-27 22:30:03,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:03,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526945184] [2024-06-27 22:30:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:03,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526945184] [2024-06-27 22:30:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526945184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:04,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:30:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694439672] [2024-06-27 22:30:04,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:30:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:30:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:30:04,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 403 transitions, 7515 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:04,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:04,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:04,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:06,837 INFO L124 PetriNetUnfolderBase]: 7476/12444 cut-off events. [2024-06-27 22:30:06,837 INFO L125 PetriNetUnfolderBase]: For 255187/255187 co-relation queries the response was YES. [2024-06-27 22:30:06,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80885 conditions, 12444 events. 7476/12444 cut-off events. For 255187/255187 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 86433 event pairs, 2335 based on Foata normal form. 1/12065 useless extension candidates. Maximal degree in co-relation 80781. Up to 10778 conditions per place. [2024-06-27 22:30:07,010 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 393 selfloop transitions, 50 changer transitions 0/451 dead transitions. [2024-06-27 22:30:07,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 451 transitions, 8736 flow [2024-06-27 22:30:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 22:30:07,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 22:30:07,011 INFO L175 Difference]: Start difference. First operand has 210 places, 403 transitions, 7515 flow. Second operand 7 states and 156 transitions. [2024-06-27 22:30:07,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 451 transitions, 8736 flow [2024-06-27 22:30:07,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 451 transitions, 8409 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 22:30:07,658 INFO L231 Difference]: Finished difference. Result has 212 places, 427 transitions, 7604 flow [2024-06-27 22:30:07,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7196, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7604, PETRI_PLACES=212, PETRI_TRANSITIONS=427} [2024-06-27 22:30:07,658 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 160 predicate places. [2024-06-27 22:30:07,659 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 427 transitions, 7604 flow [2024-06-27 22:30:07,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:07,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:07,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:07,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:30:07,659 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:07,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1050513686, now seen corresponding path program 1 times [2024-06-27 22:30:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:07,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574370357] [2024-06-27 22:30:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574370357] [2024-06-27 22:30:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574370357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:09,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:30:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113537131] [2024-06-27 22:30:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:30:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:30:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:30:09,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:09,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 427 transitions, 7604 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:09,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:09,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:09,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:11,421 INFO L124 PetriNetUnfolderBase]: 7527/12527 cut-off events. [2024-06-27 22:30:11,422 INFO L125 PetriNetUnfolderBase]: For 262711/262711 co-relation queries the response was YES. [2024-06-27 22:30:11,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82012 conditions, 12527 events. 7527/12527 cut-off events. For 262711/262711 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 87266 event pairs, 2448 based on Foata normal form. 3/12146 useless extension candidates. Maximal degree in co-relation 81905. Up to 10767 conditions per place. [2024-06-27 22:30:11,594 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 427 selfloop transitions, 32 changer transitions 0/467 dead transitions. [2024-06-27 22:30:11,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 467 transitions, 8937 flow [2024-06-27 22:30:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:30:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:30:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:30:11,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 22:30:11,595 INFO L175 Difference]: Start difference. First operand has 212 places, 427 transitions, 7604 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:30:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 467 transitions, 8937 flow [2024-06-27 22:30:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 467 transitions, 8875 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:12,328 INFO L231 Difference]: Finished difference. Result has 218 places, 437 transitions, 7817 flow [2024-06-27 22:30:12,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7542, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7817, PETRI_PLACES=218, PETRI_TRANSITIONS=437} [2024-06-27 22:30:12,328 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 166 predicate places. [2024-06-27 22:30:12,328 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 437 transitions, 7817 flow [2024-06-27 22:30:12,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:12,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:12,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:12,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:30:12,329 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:12,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -845494454, now seen corresponding path program 2 times [2024-06-27 22:30:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591547041] [2024-06-27 22:30:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:12,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591547041] [2024-06-27 22:30:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591547041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:30:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776306468] [2024-06-27 22:30:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:13,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:30:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:30:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:30:13,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:13,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 437 transitions, 7817 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:13,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:13,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:13,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:16,356 INFO L124 PetriNetUnfolderBase]: 7518/12511 cut-off events. [2024-06-27 22:30:16,356 INFO L125 PetriNetUnfolderBase]: For 270904/270910 co-relation queries the response was YES. [2024-06-27 22:30:16,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83075 conditions, 12511 events. 7518/12511 cut-off events. For 270904/270910 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 87160 event pairs, 2421 based on Foata normal form. 7/12133 useless extension candidates. Maximal degree in co-relation 82963. Up to 10760 conditions per place. [2024-06-27 22:30:16,490 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 421 selfloop transitions, 32 changer transitions 0/461 dead transitions. [2024-06-27 22:30:16,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 461 transitions, 8865 flow [2024-06-27 22:30:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:30:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:30:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 22:30:16,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 22:30:16,491 INFO L175 Difference]: Start difference. First operand has 218 places, 437 transitions, 7817 flow. Second operand 6 states and 135 transitions. [2024-06-27 22:30:16,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 461 transitions, 8865 flow [2024-06-27 22:30:17,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 461 transitions, 8822 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:17,078 INFO L231 Difference]: Finished difference. Result has 223 places, 437 transitions, 7848 flow [2024-06-27 22:30:17,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7774, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7848, PETRI_PLACES=223, PETRI_TRANSITIONS=437} [2024-06-27 22:30:17,079 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 171 predicate places. [2024-06-27 22:30:17,079 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 437 transitions, 7848 flow [2024-06-27 22:30:17,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:17,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:17,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:17,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:30:17,080 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:17,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1427480616, now seen corresponding path program 1 times [2024-06-27 22:30:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:17,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639363809] [2024-06-27 22:30:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:17,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:18,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:18,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639363809] [2024-06-27 22:30:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639363809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:18,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:18,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:30:18,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264851437] [2024-06-27 22:30:18,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:18,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:30:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:30:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:30:18,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:18,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 437 transitions, 7848 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:18,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:18,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:18,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:21,569 INFO L124 PetriNetUnfolderBase]: 7671/12803 cut-off events. [2024-06-27 22:30:21,569 INFO L125 PetriNetUnfolderBase]: For 285114/285120 co-relation queries the response was YES. [2024-06-27 22:30:21,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85527 conditions, 12803 events. 7671/12803 cut-off events. For 285114/285120 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 89672 event pairs, 2413 based on Foata normal form. 8/12409 useless extension candidates. Maximal degree in co-relation 85411. Up to 10311 conditions per place. [2024-06-27 22:30:21,749 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 385 selfloop transitions, 128 changer transitions 0/521 dead transitions. [2024-06-27 22:30:21,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 521 transitions, 9913 flow [2024-06-27 22:30:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:30:21,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 22:30:21,750 INFO L175 Difference]: Start difference. First operand has 223 places, 437 transitions, 7848 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:30:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 521 transitions, 9913 flow [2024-06-27 22:30:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 521 transitions, 9860 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:30:22,407 INFO L231 Difference]: Finished difference. Result has 230 places, 462 transitions, 8739 flow [2024-06-27 22:30:22,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7798, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8739, PETRI_PLACES=230, PETRI_TRANSITIONS=462} [2024-06-27 22:30:22,408 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-06-27 22:30:22,408 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 462 transitions, 8739 flow [2024-06-27 22:30:22,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:22,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:22,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:30:22,409 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:22,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1427271366, now seen corresponding path program 2 times [2024-06-27 22:30:22,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:22,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784008998] [2024-06-27 22:30:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:22,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784008998] [2024-06-27 22:30:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784008998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:24,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:24,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:30:24,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088983994] [2024-06-27 22:30:24,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:24,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:30:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:30:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:30:24,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:24,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 462 transitions, 8739 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:24,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:24,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:26,824 INFO L124 PetriNetUnfolderBase]: 7753/12939 cut-off events. [2024-06-27 22:30:26,824 INFO L125 PetriNetUnfolderBase]: For 308639/308645 co-relation queries the response was YES. [2024-06-27 22:30:26,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88295 conditions, 12939 events. 7753/12939 cut-off events. For 308639/308645 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 90863 event pairs, 2383 based on Foata normal form. 8/12541 useless extension candidates. Maximal degree in co-relation 88176. Up to 10118 conditions per place. [2024-06-27 22:30:27,015 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 378 selfloop transitions, 134 changer transitions 0/520 dead transitions. [2024-06-27 22:30:27,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 520 transitions, 10305 flow [2024-06-27 22:30:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:30:27,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 22:30:27,016 INFO L175 Difference]: Start difference. First operand has 230 places, 462 transitions, 8739 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:30:27,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 520 transitions, 10305 flow [2024-06-27 22:30:27,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 520 transitions, 10126 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:30:27,776 INFO L231 Difference]: Finished difference. Result has 234 places, 466 transitions, 8930 flow [2024-06-27 22:30:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8560, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8930, PETRI_PLACES=234, PETRI_TRANSITIONS=466} [2024-06-27 22:30:27,777 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 182 predicate places. [2024-06-27 22:30:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 466 transitions, 8930 flow [2024-06-27 22:30:27,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:27,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:27,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:27,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:30:27,777 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:27,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:27,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1432842996, now seen corresponding path program 3 times [2024-06-27 22:30:27,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:27,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608687198] [2024-06-27 22:30:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:29,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608687198] [2024-06-27 22:30:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608687198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:29,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:29,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:30:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052441195] [2024-06-27 22:30:29,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:29,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:30:29,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:30:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:30:29,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:29,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 466 transitions, 8930 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:29,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:29,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:29,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:32,295 INFO L124 PetriNetUnfolderBase]: 7745/12936 cut-off events. [2024-06-27 22:30:32,296 INFO L125 PetriNetUnfolderBase]: For 321702/321708 co-relation queries the response was YES. [2024-06-27 22:30:32,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88748 conditions, 12936 events. 7745/12936 cut-off events. For 321702/321708 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 90854 event pairs, 2448 based on Foata normal form. 8/12539 useless extension candidates. Maximal degree in co-relation 88629. Up to 10421 conditions per place. [2024-06-27 22:30:32,459 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 382 selfloop transitions, 136 changer transitions 0/526 dead transitions. [2024-06-27 22:30:32,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 526 transitions, 10382 flow [2024-06-27 22:30:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:30:32,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 22:30:32,460 INFO L175 Difference]: Start difference. First operand has 234 places, 466 transitions, 8930 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:30:32,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 526 transitions, 10382 flow [2024-06-27 22:30:33,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 526 transitions, 10239 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:30:33,161 INFO L231 Difference]: Finished difference. Result has 240 places, 467 transitions, 9165 flow [2024-06-27 22:30:33,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9165, PETRI_PLACES=240, PETRI_TRANSITIONS=467} [2024-06-27 22:30:33,162 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 22:30:33,162 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 467 transitions, 9165 flow [2024-06-27 22:30:33,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:33,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:33,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:33,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:30:33,163 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:33,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:33,163 INFO L85 PathProgramCache]: Analyzing trace with hash -181912256, now seen corresponding path program 1 times [2024-06-27 22:30:33,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:33,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349229310] [2024-06-27 22:30:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:34,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:34,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349229310] [2024-06-27 22:30:34,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349229310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:34,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831961990] [2024-06-27 22:30:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:34,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:34,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:34,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 467 transitions, 9165 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:37,092 INFO L124 PetriNetUnfolderBase]: 8166/13548 cut-off events. [2024-06-27 22:30:37,092 INFO L125 PetriNetUnfolderBase]: For 351303/351309 co-relation queries the response was YES. [2024-06-27 22:30:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94472 conditions, 13548 events. 8166/13548 cut-off events. For 351303/351309 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 95149 event pairs, 2472 based on Foata normal form. 10/13143 useless extension candidates. Maximal degree in co-relation 94350. Up to 11056 conditions per place. [2024-06-27 22:30:37,283 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 469 selfloop transitions, 70 changer transitions 0/547 dead transitions. [2024-06-27 22:30:37,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 547 transitions, 11489 flow [2024-06-27 22:30:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:30:37,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-27 22:30:37,284 INFO L175 Difference]: Start difference. First operand has 240 places, 467 transitions, 9165 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:30:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 547 transitions, 11489 flow [2024-06-27 22:30:38,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 547 transitions, 11242 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:30:38,119 INFO L231 Difference]: Finished difference. Result has 245 places, 497 transitions, 9793 flow [2024-06-27 22:30:38,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8929, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9793, PETRI_PLACES=245, PETRI_TRANSITIONS=497} [2024-06-27 22:30:38,120 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-27 22:30:38,120 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 497 transitions, 9793 flow [2024-06-27 22:30:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:38,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:38,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:38,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:30:38,120 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:38,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash -181613726, now seen corresponding path program 2 times [2024-06-27 22:30:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739459566] [2024-06-27 22:30:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739459566] [2024-06-27 22:30:39,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739459566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:39,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:39,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853476654] [2024-06-27 22:30:39,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:39,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:39,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:39,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:39,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:39,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 497 transitions, 9793 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:39,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:39,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:39,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:42,274 INFO L124 PetriNetUnfolderBase]: 8222/13611 cut-off events. [2024-06-27 22:30:42,274 INFO L125 PetriNetUnfolderBase]: For 376500/376506 co-relation queries the response was YES. [2024-06-27 22:30:42,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98043 conditions, 13611 events. 8222/13611 cut-off events. For 376500/376506 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 95439 event pairs, 2507 based on Foata normal form. 6/13204 useless extension candidates. Maximal degree in co-relation 97916. Up to 11485 conditions per place. [2024-06-27 22:30:42,424 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 458 selfloop transitions, 83 changer transitions 0/549 dead transitions. [2024-06-27 22:30:42,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 549 transitions, 11781 flow [2024-06-27 22:30:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 22:30:42,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 22:30:42,426 INFO L175 Difference]: Start difference. First operand has 245 places, 497 transitions, 9793 flow. Second operand 7 states and 158 transitions. [2024-06-27 22:30:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 549 transitions, 11781 flow [2024-06-27 22:30:43,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 549 transitions, 11636 flow, removed 71 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:43,239 INFO L231 Difference]: Finished difference. Result has 253 places, 521 transitions, 10492 flow [2024-06-27 22:30:43,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9716, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10492, PETRI_PLACES=253, PETRI_TRANSITIONS=521} [2024-06-27 22:30:43,240 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2024-06-27 22:30:43,240 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 521 transitions, 10492 flow [2024-06-27 22:30:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:43,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:43,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:43,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:30:43,243 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:43,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -181613354, now seen corresponding path program 1 times [2024-06-27 22:30:43,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:43,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131278897] [2024-06-27 22:30:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:44,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131278897] [2024-06-27 22:30:44,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131278897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:44,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:44,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:44,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470723549] [2024-06-27 22:30:44,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:44,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:44,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:44,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:44,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:44,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 521 transitions, 10492 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:44,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:44,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:47,613 INFO L124 PetriNetUnfolderBase]: 8216/13611 cut-off events. [2024-06-27 22:30:47,614 INFO L125 PetriNetUnfolderBase]: For 387946/387946 co-relation queries the response was YES. [2024-06-27 22:30:47,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98970 conditions, 13611 events. 8216/13611 cut-off events. For 387946/387946 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 95458 event pairs, 2536 based on Foata normal form. 2/13202 useless extension candidates. Maximal degree in co-relation 98838. Up to 11723 conditions per place. [2024-06-27 22:30:47,820 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 501 selfloop transitions, 47 changer transitions 0/556 dead transitions. [2024-06-27 22:30:47,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 556 transitions, 11899 flow [2024-06-27 22:30:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 22:30:47,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-27 22:30:47,825 INFO L175 Difference]: Start difference. First operand has 253 places, 521 transitions, 10492 flow. Second operand 8 states and 168 transitions. [2024-06-27 22:30:47,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 556 transitions, 11899 flow [2024-06-27 22:30:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 556 transitions, 11780 flow, removed 58 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:48,794 INFO L231 Difference]: Finished difference. Result has 261 places, 527 transitions, 10638 flow [2024-06-27 22:30:48,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10373, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10638, PETRI_PLACES=261, PETRI_TRANSITIONS=527} [2024-06-27 22:30:48,794 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-06-27 22:30:48,794 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 527 transitions, 10638 flow [2024-06-27 22:30:48,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:48,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:48,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:48,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:30:48,795 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:48,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1788784450, now seen corresponding path program 4 times [2024-06-27 22:30:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965291432] [2024-06-27 22:30:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:50,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965291432] [2024-06-27 22:30:50,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965291432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:50,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:50,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:30:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135030544] [2024-06-27 22:30:50,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:50,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:30:50,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:30:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:30:50,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:50,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 527 transitions, 10638 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:50,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:50,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:50,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:53,516 INFO L124 PetriNetUnfolderBase]: 8261/13659 cut-off events. [2024-06-27 22:30:53,516 INFO L125 PetriNetUnfolderBase]: For 403182/403188 co-relation queries the response was YES. [2024-06-27 22:30:53,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100199 conditions, 13659 events. 8261/13659 cut-off events. For 403182/403188 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 95552 event pairs, 2508 based on Foata normal form. 8/13253 useless extension candidates. Maximal degree in co-relation 100063. Up to 11774 conditions per place. [2024-06-27 22:30:53,705 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 535 selfloop transitions, 30 changer transitions 0/573 dead transitions. [2024-06-27 22:30:53,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 573 transitions, 12087 flow [2024-06-27 22:30:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:30:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:30:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-27 22:30:53,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2024-06-27 22:30:53,706 INFO L175 Difference]: Start difference. First operand has 261 places, 527 transitions, 10638 flow. Second operand 9 states and 190 transitions. [2024-06-27 22:30:53,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 573 transitions, 12087 flow [2024-06-27 22:30:54,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 573 transitions, 11992 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-27 22:30:54,706 INFO L231 Difference]: Finished difference. Result has 270 places, 535 transitions, 10771 flow [2024-06-27 22:30:54,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10543, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10771, PETRI_PLACES=270, PETRI_TRANSITIONS=535} [2024-06-27 22:30:54,706 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 218 predicate places. [2024-06-27 22:30:54,707 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 535 transitions, 10771 flow [2024-06-27 22:30:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:54,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:54,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:30:54,707 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:54,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash -911898212, now seen corresponding path program 5 times [2024-06-27 22:30:54,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921278078] [2024-06-27 22:30:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921278078] [2024-06-27 22:30:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921278078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:56,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:56,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:30:56,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221808753] [2024-06-27 22:30:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:56,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:30:56,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:56,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:30:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:30:56,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:30:56,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 535 transitions, 10771 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:56,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:56,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:30:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:59,570 INFO L124 PetriNetUnfolderBase]: 8327/13777 cut-off events. [2024-06-27 22:30:59,571 INFO L125 PetriNetUnfolderBase]: For 422428/422434 co-relation queries the response was YES. [2024-06-27 22:30:59,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101873 conditions, 13777 events. 8327/13777 cut-off events. For 422428/422434 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 96562 event pairs, 2523 based on Foata normal form. 8/13369 useless extension candidates. Maximal degree in co-relation 101733. Up to 11492 conditions per place. [2024-06-27 22:30:59,769 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 459 selfloop transitions, 113 changer transitions 0/580 dead transitions. [2024-06-27 22:30:59,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 580 transitions, 12401 flow [2024-06-27 22:30:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:30:59,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 22:30:59,770 INFO L175 Difference]: Start difference. First operand has 270 places, 535 transitions, 10771 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:30:59,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 580 transitions, 12401 flow [2024-06-27 22:31:00,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 580 transitions, 12281 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:00,983 INFO L231 Difference]: Finished difference. Result has 275 places, 543 transitions, 11080 flow [2024-06-27 22:31:00,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10651, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11080, PETRI_PLACES=275, PETRI_TRANSITIONS=543} [2024-06-27 22:31:00,983 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 223 predicate places. [2024-06-27 22:31:00,983 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 543 transitions, 11080 flow [2024-06-27 22:31:00,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:00,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:00,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:31:00,984 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:00,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash -911905652, now seen corresponding path program 6 times [2024-06-27 22:31:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120386320] [2024-06-27 22:31:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120386320] [2024-06-27 22:31:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120386320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:02,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:02,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:31:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949646173] [2024-06-27 22:31:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:02,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:31:02,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:31:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:31:02,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:31:02,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 543 transitions, 11080 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:02,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:02,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:31:02,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:05,877 INFO L124 PetriNetUnfolderBase]: 8356/13850 cut-off events. [2024-06-27 22:31:05,878 INFO L125 PetriNetUnfolderBase]: For 443599/443605 co-relation queries the response was YES. [2024-06-27 22:31:05,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103286 conditions, 13850 events. 8356/13850 cut-off events. For 443599/443605 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 97354 event pairs, 2494 based on Foata normal form. 9/13440 useless extension candidates. Maximal degree in co-relation 103143. Up to 11013 conditions per place. [2024-06-27 22:31:06,064 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 393 selfloop transitions, 193 changer transitions 0/594 dead transitions. [2024-06-27 22:31:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 594 transitions, 12659 flow [2024-06-27 22:31:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:31:06,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 22:31:06,066 INFO L175 Difference]: Start difference. First operand has 275 places, 543 transitions, 11080 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:31:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 594 transitions, 12659 flow [2024-06-27 22:31:07,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 594 transitions, 12366 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:07,427 INFO L231 Difference]: Finished difference. Result has 278 places, 545 transitions, 11283 flow [2024-06-27 22:31:07,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10811, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11283, PETRI_PLACES=278, PETRI_TRANSITIONS=545} [2024-06-27 22:31:07,428 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 226 predicate places. [2024-06-27 22:31:07,428 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 545 transitions, 11283 flow [2024-06-27 22:31:07,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:07,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:07,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:07,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:31:07,428 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:07,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1196104352, now seen corresponding path program 7 times [2024-06-27 22:31:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596922678] [2024-06-27 22:31:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:09,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:09,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596922678] [2024-06-27 22:31:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596922678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:09,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:09,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:31:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262965462] [2024-06-27 22:31:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:09,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:31:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:31:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:31:09,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:31:09,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 545 transitions, 11283 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:09,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:09,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:31:09,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:12,715 INFO L124 PetriNetUnfolderBase]: 8401/13943 cut-off events. [2024-06-27 22:31:12,715 INFO L125 PetriNetUnfolderBase]: For 456551/456557 co-relation queries the response was YES. [2024-06-27 22:31:12,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105045 conditions, 13943 events. 8401/13943 cut-off events. For 456551/456557 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 98395 event pairs, 2524 based on Foata normal form. 8/13521 useless extension candidates. Maximal degree in co-relation 104900. Up to 10902 conditions per place. [2024-06-27 22:31:12,899 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 436 selfloop transitions, 142 changer transitions 0/586 dead transitions. [2024-06-27 22:31:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 586 transitions, 12779 flow [2024-06-27 22:31:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 22:31:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 22:31:12,900 INFO L175 Difference]: Start difference. First operand has 278 places, 545 transitions, 11283 flow. Second operand 8 states and 176 transitions. [2024-06-27 22:31:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 586 transitions, 12779 flow [2024-06-27 22:31:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 586 transitions, 12143 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 22:31:14,186 INFO L231 Difference]: Finished difference. Result has 280 places, 549 transitions, 11118 flow [2024-06-27 22:31:14,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10687, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11118, PETRI_PLACES=280, PETRI_TRANSITIONS=549} [2024-06-27 22:31:14,187 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-27 22:31:14,187 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 549 transitions, 11118 flow [2024-06-27 22:31:14,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:14,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:14,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:31:14,187 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:14,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1521257554, now seen corresponding path program 3 times [2024-06-27 22:31:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141423671] [2024-06-27 22:31:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:15,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:15,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141423671] [2024-06-27 22:31:15,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141423671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:15,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:15,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:15,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957356696] [2024-06-27 22:31:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:15,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:31:15,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 549 transitions, 11118 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:15,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:15,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:31:15,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:18,812 INFO L124 PetriNetUnfolderBase]: 8569/14173 cut-off events. [2024-06-27 22:31:18,812 INFO L125 PetriNetUnfolderBase]: For 457119/457125 co-relation queries the response was YES. [2024-06-27 22:31:18,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107264 conditions, 14173 events. 8569/14173 cut-off events. For 457119/457125 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 99837 event pairs, 2597 based on Foata normal form. 10/13750 useless extension candidates. Maximal degree in co-relation 107118. Up to 12083 conditions per place. [2024-06-27 22:31:19,109 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 539 selfloop transitions, 40 changer transitions 0/587 dead transitions. [2024-06-27 22:31:19,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 587 transitions, 12734 flow [2024-06-27 22:31:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 22:31:19,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 22:31:19,110 INFO L175 Difference]: Start difference. First operand has 280 places, 549 transitions, 11118 flow. Second operand 7 states and 156 transitions. [2024-06-27 22:31:19,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 587 transitions, 12734 flow [2024-06-27 22:31:20,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 587 transitions, 12441 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 22:31:20,190 INFO L231 Difference]: Finished difference. Result has 282 places, 557 transitions, 11105 flow [2024-06-27 22:31:20,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11105, PETRI_PLACES=282, PETRI_TRANSITIONS=557} [2024-06-27 22:31:20,190 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 230 predicate places. [2024-06-27 22:31:20,190 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 557 transitions, 11105 flow [2024-06-27 22:31:20,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:20,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:20,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:20,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:31:20,191 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:20,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2093637986, now seen corresponding path program 4 times [2024-06-27 22:31:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084053540] [2024-06-27 22:31:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:20,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:21,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:21,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084053540] [2024-06-27 22:31:21,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084053540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:21,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:21,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687063885] [2024-06-27 22:31:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:21,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:21,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:21,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:31:21,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 557 transitions, 11105 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:21,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:21,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:31:21,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:25,414 INFO L124 PetriNetUnfolderBase]: 8741/14371 cut-off events. [2024-06-27 22:31:25,414 INFO L125 PetriNetUnfolderBase]: For 454012/454028 co-relation queries the response was YES. [2024-06-27 22:31:25,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109300 conditions, 14371 events. 8741/14371 cut-off events. For 454012/454028 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 100536 event pairs, 2223 based on Foata normal form. 14/13958 useless extension candidates. Maximal degree in co-relation 109153. Up to 12007 conditions per place. [2024-06-27 22:31:25,627 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 492 selfloop transitions, 156 changer transitions 0/656 dead transitions. [2024-06-27 22:31:25,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 656 transitions, 13931 flow [2024-06-27 22:31:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:31:25,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 22:31:25,628 INFO L175 Difference]: Start difference. First operand has 282 places, 557 transitions, 11105 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:31:25,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 656 transitions, 13931 flow [2024-06-27 22:31:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 656 transitions, 13707 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:27,084 INFO L231 Difference]: Finished difference. Result has 289 places, 619 transitions, 12588 flow [2024-06-27 22:31:27,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10943, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12588, PETRI_PLACES=289, PETRI_TRANSITIONS=619} [2024-06-27 22:31:27,085 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 237 predicate places. [2024-06-27 22:31:27,085 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 619 transitions, 12588 flow [2024-06-27 22:31:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:27,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:27,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:27,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:31:27,086 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:27,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2091909874, now seen corresponding path program 8 times [2024-06-27 22:31:27,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:27,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548192419] [2024-06-27 22:31:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:28,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548192419] [2024-06-27 22:31:28,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548192419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:28,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:28,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:31:28,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016160913] [2024-06-27 22:31:28,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:28,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:31:28,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:31:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:31:28,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:31:28,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 619 transitions, 12588 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:28,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:28,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:31:28,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:33,066 INFO L124 PetriNetUnfolderBase]: 8939/14653 cut-off events. [2024-06-27 22:31:33,066 INFO L125 PetriNetUnfolderBase]: For 496025/496033 co-relation queries the response was YES. [2024-06-27 22:31:33,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115602 conditions, 14653 events. 8939/14653 cut-off events. For 496025/496033 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 102161 event pairs, 2289 based on Foata normal form. 10/14236 useless extension candidates. Maximal degree in co-relation 115452. Up to 11917 conditions per place. [2024-06-27 22:31:33,264 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 495 selfloop transitions, 222 changer transitions 0/725 dead transitions. [2024-06-27 22:31:33,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 725 transitions, 15927 flow [2024-06-27 22:31:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:31:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:31:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:31:33,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-27 22:31:33,266 INFO L175 Difference]: Start difference. First operand has 289 places, 619 transitions, 12588 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:31:33,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 725 transitions, 15927 flow [2024-06-27 22:31:34,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 725 transitions, 15575 flow, removed 165 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:34,704 INFO L231 Difference]: Finished difference. Result has 298 places, 673 transitions, 14395 flow [2024-06-27 22:31:34,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12268, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14395, PETRI_PLACES=298, PETRI_TRANSITIONS=673} [2024-06-27 22:31:34,705 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 246 predicate places. [2024-06-27 22:31:34,705 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 673 transitions, 14395 flow [2024-06-27 22:31:34,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:34,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:34,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:34,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:31:34,706 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:34,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:34,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2097272254, now seen corresponding path program 9 times [2024-06-27 22:31:34,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:34,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936793001] [2024-06-27 22:31:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat