./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:19:11,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:19:11,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:19:11,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:19:11,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:19:11,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:19:11,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:19:11,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:19:11,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:19:11,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:19:11,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:19:11,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:19:11,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:19:11,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:19:11,281 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:19:11,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:19:11,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:19:11,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:19:11,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:19:11,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:19:11,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:19:11,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:19:11,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:19:11,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:19:11,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:19:11,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:19:11,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:19:11,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:19:11,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:19:11,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:19:11,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:19:11,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:19:11,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:19:11,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:19:11,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:19:11,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:19:11,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:19:11,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:19:11,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:19:11,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:19:11,289 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:19:11,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:19:11,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:19:11,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:19:11,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:19:11,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:19:11,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:19:11,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:19:11,545 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:19:11,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 22:19:12,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:19:12,952 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:19:12,952 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 22:19:12,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75ea7820/46d85e7155754321a1e250041adb1491/FLAG8e15b6a04 [2024-06-27 22:19:12,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75ea7820/46d85e7155754321a1e250041adb1491 [2024-06-27 22:19:12,993 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:19:12,993 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:19:12,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-27 22:19:13,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:19:13,067 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:19:13,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:19:13,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:19:13,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:19:13,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:19:12" (1/2) ... [2024-06-27 22:19:13,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568a2b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:19:13, skipping insertion in model container [2024-06-27 22:19:13,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:19:12" (1/2) ... [2024-06-27 22:19:13,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a20a81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:19:13, skipping insertion in model container [2024-06-27 22:19:13,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:19:13" (2/2) ... [2024-06-27 22:19:13,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568a2b70 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13, skipping insertion in model container [2024-06-27 22:19:13,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:19:13" (2/2) ... [2024-06-27 22:19:13,083 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:19:13,104 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:19:13,105 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (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_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$w_buff0_used >= 0LL) && (0LL - (long long )z$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_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (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_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (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_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$r_buff0_thd1 + (long long )z$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$r_buff1_thd0 + (long long )z$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$read_delayed + (long long )z$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$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )z$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$r_buff1_thd0 >= 0LL) && (long long )z$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$read_delayed >= 0LL) && (long long )z$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$w_buff1_used >= 0LL) [2024-06-27 22:19:13,105 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z$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$r_buff1_thd0) + (long long )z$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$read_delayed) + (long long )z$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$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$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$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$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$r_buff1_thd0 >= 0LL) && (long long )z$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$read_delayed >= 0LL) && (long long )z$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_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$w_buff0_used >= 0LL) && (long long )z$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$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )z$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$r_buff1_thd0 >= 0LL) && (long long )z$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$read_delayed >= 0LL) && (long long )z$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 22:19:13,106 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:19:13,106 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-27 22:19:13,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:19:13,315 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] [2024-06-27 22:19:13,459 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:19:13,469 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:19:13,508 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:19:13,677 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:19:13,729 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:19:13,729 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13 WrapperNode [2024-06-27 22:19:13,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:19:13,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:19:13,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:19:13,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:19:13,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,819 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-06-27 22:19:13,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:19:13,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:19:13,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:19:13,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:19:13,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,866 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 22:19:13,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:19:13,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:19:13,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:19:13,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:19:13,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (1/1) ... [2024-06-27 22:19:13,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:19:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:19:13,919 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 22:19:13,931 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 22:19:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:19:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:19:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:19:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:19:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:19:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:19:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:19:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:19:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:19:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:19:13,959 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 22:19:14,115 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:19:14,118 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:19:14,589 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:19:14,590 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:19:14,769 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:19:14,770 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:19:14,770 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:19:14 BoogieIcfgContainer [2024-06-27 22:19:14,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:19:14,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:19:14,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:19:14,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:19:14,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:19:12" (1/4) ... [2024-06-27 22:19:14,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bf330c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:19:14, skipping insertion in model container [2024-06-27 22:19:14,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:19:13" (2/4) ... [2024-06-27 22:19:14,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bf330c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:19:14, skipping insertion in model container [2024-06-27 22:19:14,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:13" (3/4) ... [2024-06-27 22:19:14,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bf330c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:19:14, skipping insertion in model container [2024-06-27 22:19:14,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:19:14" (4/4) ... [2024-06-27 22:19:14,781 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 22:19:14,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:19:14,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:19:14,797 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:19:14,848 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:19:14,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:19:14,919 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 22:19:14,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:19:14,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 22:19:14,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:19:14,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 22:19:14,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:19:14,942 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;@7ec03516, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:19:14,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:19:14,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:19:14,947 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:19:14,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:19:14,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:14,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:19:14,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:14,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 315417610, now seen corresponding path program 1 times [2024-06-27 22:19:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514562764] [2024-06-27 22:19:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:16,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514562764] [2024-06-27 22:19:16,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514562764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:16,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:16,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:19:16,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672692938] [2024-06-27 22:19:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:19:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:19:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:19:16,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:19:16,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:16,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:16,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:19:16,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:17,125 INFO L124 PetriNetUnfolderBase]: 456/903 cut-off events. [2024-06-27 22:19:17,125 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 22:19:17,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 903 events. 456/903 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5025 event pairs, 354 based on Foata normal form. 36/850 useless extension candidates. Maximal degree in co-relation 1670. Up to 753 conditions per place. [2024-06-27 22:19:17,138 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:19:17,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 163 flow [2024-06-27 22:19:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:19:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:19:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 22:19:17,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-27 22:19:17,153 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-27 22:19:17,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 163 flow [2024-06-27 22:19:17,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:17,159 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:19:17,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-27 22:19:17,165 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:19:17,165 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:19:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:17,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:17,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:19:17,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:17,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1825445526, now seen corresponding path program 1 times [2024-06-27 22:19:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:17,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7742790] [2024-06-27 22:19:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:17,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7742790] [2024-06-27 22:19:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7742790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:18,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:18,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:19:18,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048087019] [2024-06-27 22:19:18,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:19:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:18,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:19:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:19:18,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:19:18,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:18,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:18,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:19:18,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:18,570 INFO L124 PetriNetUnfolderBase]: 458/914 cut-off events. [2024-06-27 22:19:18,570 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-06-27 22:19:18,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 914 events. 458/914 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5112 event pairs, 303 based on Foata normal form. 2/835 useless extension candidates. Maximal degree in co-relation 1870. Up to 745 conditions per place. [2024-06-27 22:19:18,576 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 36 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2024-06-27 22:19:18,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 229 flow [2024-06-27 22:19:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:19:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:19:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-27 22:19:18,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-27 22:19:18,579 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 95 transitions. [2024-06-27 22:19:18,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 229 flow [2024-06-27 22:19:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:18,581 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 141 flow [2024-06-27 22:19:18,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 22:19:18,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-27 22:19:18,582 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 141 flow [2024-06-27 22:19:18,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:18,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:18,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:18,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:19:18,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:18,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1906475223, now seen corresponding path program 1 times [2024-06-27 22:19:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:18,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188797205] [2024-06-27 22:19:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188797205] [2024-06-27 22:19:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188797205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:19,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:19,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934673500] [2024-06-27 22:19:19,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:19,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:20,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:19:20,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 141 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 22:19:20,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:20,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:19:20,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:20,410 INFO L124 PetriNetUnfolderBase]: 545/987 cut-off events. [2024-06-27 22:19:20,410 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-06-27 22:19:20,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 987 events. 545/987 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5226 event pairs, 161 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 2313. Up to 834 conditions per place. [2024-06-27 22:19:20,417 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 52 selfloop transitions, 14 changer transitions 3/79 dead transitions. [2024-06-27 22:19:20,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 388 flow [2024-06-27 22:19:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 22:19:20,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 22:19:20,424 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 141 flow. Second operand 6 states and 138 transitions. [2024-06-27 22:19:20,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 79 transitions, 388 flow [2024-06-27 22:19:20,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 79 transitions, 378 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:20,428 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 218 flow [2024-06-27 22:19:20,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-27 22:19:20,430 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2024-06-27 22:19:20,430 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 218 flow [2024-06-27 22:19:20,431 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 22:19:20,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:20,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:19:20,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:20,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash 173504216, now seen corresponding path program 1 times [2024-06-27 22:19:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:20,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831053946] [2024-06-27 22:19:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:20,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:22,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831053946] [2024-06-27 22:19:22,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831053946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:22,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:22,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976533025] [2024-06-27 22:19:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:22,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:22,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:19:22,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:22,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:22,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:19:22,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,551 INFO L124 PetriNetUnfolderBase]: 541/1037 cut-off events. [2024-06-27 22:19:22,551 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-06-27 22:19:22,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 1037 events. 541/1037 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5703 event pairs, 215 based on Foata normal form. 4/954 useless extension candidates. Maximal degree in co-relation 2615. Up to 792 conditions per place. [2024-06-27 22:19:22,559 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 55 selfloop transitions, 15 changer transitions 4/84 dead transitions. [2024-06-27 22:19:22,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 448 flow [2024-06-27 22:19:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 22:19:22,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984555984555985 [2024-06-27 22:19:22,562 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 218 flow. Second operand 7 states and 155 transitions. [2024-06-27 22:19:22,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 448 flow [2024-06-27 22:19:22,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 435 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:22,570 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 231 flow [2024-06-27 22:19:22,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-27 22:19:22,572 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-27 22:19:22,572 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 231 flow [2024-06-27 22:19:22,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:22,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:22,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:22,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:19:22,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:22,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1022736489, now seen corresponding path program 1 times [2024-06-27 22:19:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535068085] [2024-06-27 22:19:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:22,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:22,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535068085] [2024-06-27 22:19:22,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535068085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:22,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:22,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:19:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69658523] [2024-06-27 22:19:22,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:19:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:19:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:19:22,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 22:19:22,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:22,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:22,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 22:19:22,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,779 INFO L124 PetriNetUnfolderBase]: 222/560 cut-off events. [2024-06-27 22:19:22,779 INFO L125 PetriNetUnfolderBase]: For 372/381 co-relation queries the response was YES. [2024-06-27 22:19:22,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 560 events. 222/560 cut-off events. For 372/381 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3322 event pairs, 92 based on Foata normal form. 3/520 useless extension candidates. Maximal degree in co-relation 1313. Up to 332 conditions per place. [2024-06-27 22:19:22,785 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 28 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:19:22,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 317 flow [2024-06-27 22:19:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:19:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:19:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 22:19:22,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7657657657657657 [2024-06-27 22:19:22,786 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 231 flow. Second operand 3 states and 85 transitions. [2024-06-27 22:19:22,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 317 flow [2024-06-27 22:19:22,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 274 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:22,790 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 192 flow [2024-06-27 22:19:22,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 22:19:22,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2024-06-27 22:19:22,795 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 192 flow [2024-06-27 22:19:22,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:22,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:22,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:22,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:19:22,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:22,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash 43409738, now seen corresponding path program 1 times [2024-06-27 22:19:22,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:22,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426671683] [2024-06-27 22:19:22,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:22,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:24,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426671683] [2024-06-27 22:19:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426671683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:24,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:19:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21012910] [2024-06-27 22:19:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:24,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:19:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:19:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:19:24,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:24,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:24,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:24,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:24,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:24,756 INFO L124 PetriNetUnfolderBase]: 539/1052 cut-off events. [2024-06-27 22:19:24,756 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-06-27 22:19:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 1052 events. 539/1052 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5670 event pairs, 301 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 2627. Up to 870 conditions per place. [2024-06-27 22:19:24,762 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 42 selfloop transitions, 10 changer transitions 3/63 dead transitions. [2024-06-27 22:19:24,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 354 flow [2024-06-27 22:19:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:19:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:19:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-27 22:19:24,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:19:24,764 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 192 flow. Second operand 5 states and 95 transitions. [2024-06-27 22:19:24,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 354 flow [2024-06-27 22:19:24,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:24,767 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 235 flow [2024-06-27 22:19:24,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 22:19:24,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-27 22:19:24,770 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 235 flow [2024-06-27 22:19:24,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:24,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:24,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:24,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:19:24,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:24,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:24,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1313384271, now seen corresponding path program 1 times [2024-06-27 22:19:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:24,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237386886] [2024-06-27 22:19:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:26,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237386886] [2024-06-27 22:19:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237386886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:26,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:26,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458409284] [2024-06-27 22:19:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:26,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:26,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:26,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:19:26,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:26,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:26,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:19:26,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:27,110 INFO L124 PetriNetUnfolderBase]: 533/1039 cut-off events. [2024-06-27 22:19:27,110 INFO L125 PetriNetUnfolderBase]: For 1282/1282 co-relation queries the response was YES. [2024-06-27 22:19:27,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 1039 events. 533/1039 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5535 event pairs, 294 based on Foata normal form. 1/1004 useless extension candidates. Maximal degree in co-relation 2714. Up to 853 conditions per place. [2024-06-27 22:19:27,118 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-27 22:19:27,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 401 flow [2024-06-27 22:19:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 22:19:27,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:19:27,121 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 235 flow. Second operand 6 states and 104 transitions. [2024-06-27 22:19:27,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 401 flow [2024-06-27 22:19:27,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 387 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:27,125 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 264 flow [2024-06-27 22:19:27,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-27 22:19:27,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-27 22:19:27,127 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 264 flow [2024-06-27 22:19:27,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:27,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:27,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:27,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:19:27,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:27,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash 626898922, now seen corresponding path program 1 times [2024-06-27 22:19:27,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360979581] [2024-06-27 22:19:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:27,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360979581] [2024-06-27 22:19:28,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360979581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:28,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:28,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:28,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931223716] [2024-06-27 22:19:28,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:28,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:28,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:28,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:28,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:29,280 INFO L124 PetriNetUnfolderBase]: 513/1036 cut-off events. [2024-06-27 22:19:29,281 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2024-06-27 22:19:29,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 1036 events. 513/1036 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5636 event pairs, 243 based on Foata normal form. 1/1000 useless extension candidates. Maximal degree in co-relation 2805. Up to 793 conditions per place. [2024-06-27 22:19:29,288 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 55 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2024-06-27 22:19:29,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 553 flow [2024-06-27 22:19:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 22:19:29,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 22:19:29,293 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 264 flow. Second operand 7 states and 129 transitions. [2024-06-27 22:19:29,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 553 flow [2024-06-27 22:19:29,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 527 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:29,299 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 406 flow [2024-06-27 22:19:29,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-27 22:19:29,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 22:19:29,301 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 406 flow [2024-06-27 22:19:29,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:29,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:29,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:29,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:19:29,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:29,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2053562214, now seen corresponding path program 2 times [2024-06-27 22:19:29,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:29,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682836265] [2024-06-27 22:19:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682836265] [2024-06-27 22:19:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682836265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:30,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:30,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:30,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299314148] [2024-06-27 22:19:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:30,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:30,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:30,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:30,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:30,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:30,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:30,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:31,083 INFO L124 PetriNetUnfolderBase]: 533/1066 cut-off events. [2024-06-27 22:19:31,084 INFO L125 PetriNetUnfolderBase]: For 2226/2226 co-relation queries the response was YES. [2024-06-27 22:19:31,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3270 conditions, 1066 events. 533/1066 cut-off events. For 2226/2226 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5785 event pairs, 261 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 3239. Up to 830 conditions per place. [2024-06-27 22:19:31,092 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 57 selfloop transitions, 28 changer transitions 0/94 dead transitions. [2024-06-27 22:19:31,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 94 transitions, 730 flow [2024-06-27 22:19:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 22:19:31,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:19:31,094 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 406 flow. Second operand 6 states and 110 transitions. [2024-06-27 22:19:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 94 transitions, 730 flow [2024-06-27 22:19:31,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 700 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:31,103 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 579 flow [2024-06-27 22:19:31,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=579, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-27 22:19:31,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 22:19:31,104 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 579 flow [2024-06-27 22:19:31,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:31,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:31,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:31,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:19:31,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:31,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:31,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1232897272, now seen corresponding path program 3 times [2024-06-27 22:19:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:31,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998366323] [2024-06-27 22:19:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998366323] [2024-06-27 22:19:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998366323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:32,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619506088] [2024-06-27 22:19:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:32,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:32,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:32,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:32,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:32,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:32,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:32,760 INFO L124 PetriNetUnfolderBase]: 531/1062 cut-off events. [2024-06-27 22:19:32,760 INFO L125 PetriNetUnfolderBase]: For 2699/2699 co-relation queries the response was YES. [2024-06-27 22:19:32,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1062 events. 531/1062 cut-off events. For 2699/2699 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5745 event pairs, 259 based on Foata normal form. 1/1026 useless extension candidates. Maximal degree in co-relation 3369. Up to 849 conditions per place. [2024-06-27 22:19:32,768 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 70 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-27 22:19:32,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 799 flow [2024-06-27 22:19:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 22:19:32,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:19:32,770 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 579 flow. Second operand 6 states and 106 transitions. [2024-06-27 22:19:32,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 799 flow [2024-06-27 22:19:32,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 788 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:32,778 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 629 flow [2024-06-27 22:19:32,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=629, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-27 22:19:32,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-27 22:19:32,780 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 629 flow [2024-06-27 22:19:32,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:32,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:32,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:32,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:19:32,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:32,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:32,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1265062655, now seen corresponding path program 1 times [2024-06-27 22:19:32,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612842949] [2024-06-27 22:19:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:32,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:34,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612842949] [2024-06-27 22:19:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612842949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:34,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:34,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:34,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098249726] [2024-06-27 22:19:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:34,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:19:34,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 629 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:34,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:34,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:19:34,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:35,331 INFO L124 PetriNetUnfolderBase]: 566/1077 cut-off events. [2024-06-27 22:19:35,331 INFO L125 PetriNetUnfolderBase]: For 3092/3092 co-relation queries the response was YES. [2024-06-27 22:19:35,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 1077 events. 566/1077 cut-off events. For 3092/3092 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5635 event pairs, 276 based on Foata normal form. 3/1047 useless extension candidates. Maximal degree in co-relation 3538. Up to 870 conditions per place. [2024-06-27 22:19:35,339 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 85 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2024-06-27 22:19:35,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 108 transitions, 903 flow [2024-06-27 22:19:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 22:19:35,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-27 22:19:35,341 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 629 flow. Second operand 7 states and 122 transitions. [2024-06-27 22:19:35,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 108 transitions, 903 flow [2024-06-27 22:19:35,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 871 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:35,353 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 650 flow [2024-06-27 22:19:35,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=650, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-27 22:19:35,353 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 22:19:35,354 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 650 flow [2024-06-27 22:19:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:35,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:35,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:35,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:19:35,354 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:35,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 171196253, now seen corresponding path program 1 times [2024-06-27 22:19:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695828790] [2024-06-27 22:19:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:36,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:36,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695828790] [2024-06-27 22:19:36,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695828790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:36,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:36,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323892856] [2024-06-27 22:19:36,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:36,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:36,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:36,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:36,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:36,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:36,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:36,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:37,531 INFO L124 PetriNetUnfolderBase]: 555/1081 cut-off events. [2024-06-27 22:19:37,531 INFO L125 PetriNetUnfolderBase]: For 3392/3395 co-relation queries the response was YES. [2024-06-27 22:19:37,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 1081 events. 555/1081 cut-off events. For 3392/3395 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5779 event pairs, 219 based on Foata normal form. 3/1051 useless extension candidates. Maximal degree in co-relation 3688. Up to 843 conditions per place. [2024-06-27 22:19:37,540 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 87 selfloop transitions, 34 changer transitions 0/130 dead transitions. [2024-06-27 22:19:37,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 1092 flow [2024-06-27 22:19:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:19:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:19:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:19:37,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:19:37,542 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 650 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:19:37,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 1092 flow [2024-06-27 22:19:37,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 130 transitions, 1059 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:37,552 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 829 flow [2024-06-27 22:19:37,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=829, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2024-06-27 22:19:37,553 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-27 22:19:37,554 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 829 flow [2024-06-27 22:19:37,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:37,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:37,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:19:37,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:37,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2073292341, now seen corresponding path program 2 times [2024-06-27 22:19:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407658122] [2024-06-27 22:19:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407658122] [2024-06-27 22:19:39,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407658122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:39,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:39,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817579912] [2024-06-27 22:19:39,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:39,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:39,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 829 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:39,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:39,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:39,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:40,000 INFO L124 PetriNetUnfolderBase]: 587/1135 cut-off events. [2024-06-27 22:19:40,001 INFO L125 PetriNetUnfolderBase]: For 4462/4464 co-relation queries the response was YES. [2024-06-27 22:19:40,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 1135 events. 587/1135 cut-off events. For 4462/4464 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6077 event pairs, 219 based on Foata normal form. 3/1104 useless extension candidates. Maximal degree in co-relation 4224. Up to 891 conditions per place. [2024-06-27 22:19:40,011 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 93 selfloop transitions, 38 changer transitions 0/140 dead transitions. [2024-06-27 22:19:40,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 140 transitions, 1302 flow [2024-06-27 22:19:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:19:40,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-27 22:19:40,014 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 829 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:19:40,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 140 transitions, 1302 flow [2024-06-27 22:19:40,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 1199 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:40,027 INFO L231 Difference]: Finished difference. Result has 93 places, 121 transitions, 998 flow [2024-06-27 22:19:40,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=998, PETRI_PLACES=93, PETRI_TRANSITIONS=121} [2024-06-27 22:19:40,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-27 22:19:40,029 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 121 transitions, 998 flow [2024-06-27 22:19:40,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:40,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:40,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:19:40,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:40,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2042007141, now seen corresponding path program 3 times [2024-06-27 22:19:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:40,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758089023] [2024-06-27 22:19:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:40,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:41,855 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 22:19:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758089023] [2024-06-27 22:19:41,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758089023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:41,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677055517] [2024-06-27 22:19:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:41,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:41,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:41,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 121 transitions, 998 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:41,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:41,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:41,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:42,452 INFO L124 PetriNetUnfolderBase]: 597/1150 cut-off events. [2024-06-27 22:19:42,452 INFO L125 PetriNetUnfolderBase]: For 5206/5208 co-relation queries the response was YES. [2024-06-27 22:19:42,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4450 conditions, 1150 events. 597/1150 cut-off events. For 5206/5208 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6155 event pairs, 213 based on Foata normal form. 3/1120 useless extension candidates. Maximal degree in co-relation 4406. Up to 831 conditions per place. [2024-06-27 22:19:42,466 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 72 selfloop transitions, 71 changer transitions 0/152 dead transitions. [2024-06-27 22:19:42,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 152 transitions, 1463 flow [2024-06-27 22:19:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:19:42,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328185328185329 [2024-06-27 22:19:42,468 INFO L175 Difference]: Start difference. First operand has 93 places, 121 transitions, 998 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:19:42,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 152 transitions, 1463 flow [2024-06-27 22:19:42,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 152 transitions, 1424 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:42,487 INFO L231 Difference]: Finished difference. Result has 99 places, 132 transitions, 1226 flow [2024-06-27 22:19:42,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1226, PETRI_PLACES=99, PETRI_TRANSITIONS=132} [2024-06-27 22:19:42,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-27 22:19:42,488 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 132 transitions, 1226 flow [2024-06-27 22:19:42,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:42,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:42,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:42,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:19:42,506 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:42,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2073287505, now seen corresponding path program 1 times [2024-06-27 22:19:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159956796] [2024-06-27 22:19:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:42,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:44,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:44,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159956796] [2024-06-27 22:19:44,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159956796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:44,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:44,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:44,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353150753] [2024-06-27 22:19:44,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:44,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:44,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:44,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:19:44,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 132 transitions, 1226 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:44,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:44,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:19:44,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:44,776 INFO L124 PetriNetUnfolderBase]: 650/1239 cut-off events. [2024-06-27 22:19:44,777 INFO L125 PetriNetUnfolderBase]: For 6749/6749 co-relation queries the response was YES. [2024-06-27 22:19:44,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 1239 events. 650/1239 cut-off events. For 6749/6749 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6619 event pairs, 257 based on Foata normal form. 1/1201 useless extension candidates. Maximal degree in co-relation 5031. Up to 966 conditions per place. [2024-06-27 22:19:44,795 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 113 selfloop transitions, 45 changer transitions 0/165 dead transitions. [2024-06-27 22:19:44,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 165 transitions, 1736 flow [2024-06-27 22:19:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:19:44,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-27 22:19:44,797 INFO L175 Difference]: Start difference. First operand has 99 places, 132 transitions, 1226 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:19:44,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 165 transitions, 1736 flow [2024-06-27 22:19:44,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 165 transitions, 1676 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:44,817 INFO L231 Difference]: Finished difference. Result has 106 places, 145 transitions, 1392 flow [2024-06-27 22:19:44,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1392, PETRI_PLACES=106, PETRI_TRANSITIONS=145} [2024-06-27 22:19:44,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 22:19:44,819 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 145 transitions, 1392 flow [2024-06-27 22:19:44,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:44,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:44,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:44,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:19:44,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:44,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1009445645, now seen corresponding path program 4 times [2024-06-27 22:19:44,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:44,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113803162] [2024-06-27 22:19:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113803162] [2024-06-27 22:19:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113803162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:46,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058494510] [2024-06-27 22:19:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:46,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:46,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:46,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 145 transitions, 1392 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:46,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:46,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:46,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:46,853 INFO L124 PetriNetUnfolderBase]: 636/1252 cut-off events. [2024-06-27 22:19:46,853 INFO L125 PetriNetUnfolderBase]: For 7993/7993 co-relation queries the response was YES. [2024-06-27 22:19:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 1252 events. 636/1252 cut-off events. For 7993/7993 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6955 event pairs, 252 based on Foata normal form. 1/1210 useless extension candidates. Maximal degree in co-relation 5356. Up to 960 conditions per place. [2024-06-27 22:19:46,864 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 136 selfloop transitions, 31 changer transitions 0/180 dead transitions. [2024-06-27 22:19:46,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 1961 flow [2024-06-27 22:19:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 22:19:46,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 22:19:46,866 INFO L175 Difference]: Start difference. First operand has 106 places, 145 transitions, 1392 flow. Second operand 7 states and 127 transitions. [2024-06-27 22:19:46,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 1961 flow [2024-06-27 22:19:46,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 180 transitions, 1925 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:46,886 INFO L231 Difference]: Finished difference. Result has 114 places, 160 transitions, 1638 flow [2024-06-27 22:19:46,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1638, PETRI_PLACES=114, PETRI_TRANSITIONS=160} [2024-06-27 22:19:46,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 22:19:46,888 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 160 transitions, 1638 flow [2024-06-27 22:19:46,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:46,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:46,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:46,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:19:46,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:46,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1162327045, now seen corresponding path program 5 times [2024-06-27 22:19:46,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:46,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061621131] [2024-06-27 22:19:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:46,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:48,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:48,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061621131] [2024-06-27 22:19:48,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061621131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:48,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:48,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:48,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676890032] [2024-06-27 22:19:48,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:48,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:48,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:48,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 160 transitions, 1638 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:48,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:48,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:48,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:48,569 INFO L124 PetriNetUnfolderBase]: 664/1314 cut-off events. [2024-06-27 22:19:48,569 INFO L125 PetriNetUnfolderBase]: For 9477/9477 co-relation queries the response was YES. [2024-06-27 22:19:48,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5915 conditions, 1314 events. 664/1314 cut-off events. For 9477/9477 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7431 event pairs, 256 based on Foata normal form. 1/1268 useless extension candidates. Maximal degree in co-relation 5859. Up to 934 conditions per place. [2024-06-27 22:19:48,581 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 131 selfloop transitions, 54 changer transitions 0/198 dead transitions. [2024-06-27 22:19:48,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 198 transitions, 2288 flow [2024-06-27 22:19:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:19:48,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 22:19:48,584 INFO L175 Difference]: Start difference. First operand has 114 places, 160 transitions, 1638 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:19:48,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 198 transitions, 2288 flow [2024-06-27 22:19:48,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 198 transitions, 2250 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:48,612 INFO L231 Difference]: Finished difference. Result has 119 places, 172 transitions, 1875 flow [2024-06-27 22:19:48,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1875, PETRI_PLACES=119, PETRI_TRANSITIONS=172} [2024-06-27 22:19:48,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-27 22:19:48,613 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 172 transitions, 1875 flow [2024-06-27 22:19:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:48,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:48,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:48,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:19:48,613 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:48,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash -764079983, now seen corresponding path program 2 times [2024-06-27 22:19:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:48,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851516842] [2024-06-27 22:19:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:48,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:49,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851516842] [2024-06-27 22:19:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851516842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:49,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135840175] [2024-06-27 22:19:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:49,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:19:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 172 transitions, 1875 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:19:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:50,265 INFO L124 PetriNetUnfolderBase]: 717/1376 cut-off events. [2024-06-27 22:19:50,265 INFO L125 PetriNetUnfolderBase]: For 11112/11112 co-relation queries the response was YES. [2024-06-27 22:19:50,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6503 conditions, 1376 events. 717/1376 cut-off events. For 11112/11112 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7634 event pairs, 282 based on Foata normal form. 1/1330 useless extension candidates. Maximal degree in co-relation 6445. Up to 1087 conditions per place. [2024-06-27 22:19:50,275 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 144 selfloop transitions, 45 changer transitions 0/196 dead transitions. [2024-06-27 22:19:50,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 196 transitions, 2412 flow [2024-06-27 22:19:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 22:19:50,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-27 22:19:50,276 INFO L175 Difference]: Start difference. First operand has 119 places, 172 transitions, 1875 flow. Second operand 7 states and 122 transitions. [2024-06-27 22:19:50,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 196 transitions, 2412 flow [2024-06-27 22:19:50,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 196 transitions, 2377 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:50,303 INFO L231 Difference]: Finished difference. Result has 124 places, 181 transitions, 2014 flow [2024-06-27 22:19:50,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2014, PETRI_PLACES=124, PETRI_TRANSITIONS=181} [2024-06-27 22:19:50,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-27 22:19:50,304 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 181 transitions, 2014 flow [2024-06-27 22:19:50,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:50,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:50,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:19:50,304 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 434890869, now seen corresponding path program 6 times [2024-06-27 22:19:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:50,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507835518] [2024-06-27 22:19:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:50,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507835518] [2024-06-27 22:19:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507835518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:51,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:51,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846052645] [2024-06-27 22:19:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:51,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:51,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 181 transitions, 2014 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:51,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:51,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:51,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:52,014 INFO L124 PetriNetUnfolderBase]: 677/1334 cut-off events. [2024-06-27 22:19:52,014 INFO L125 PetriNetUnfolderBase]: For 11467/11467 co-relation queries the response was YES. [2024-06-27 22:19:52,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6403 conditions, 1334 events. 677/1334 cut-off events. For 11467/11467 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7519 event pairs, 258 based on Foata normal form. 1/1288 useless extension candidates. Maximal degree in co-relation 6343. Up to 1037 conditions per place. [2024-06-27 22:19:52,028 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 163 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-27 22:19:52,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 201 transitions, 2500 flow [2024-06-27 22:19:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 22:19:52,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-27 22:19:52,030 INFO L175 Difference]: Start difference. First operand has 124 places, 181 transitions, 2014 flow. Second operand 7 states and 124 transitions. [2024-06-27 22:19:52,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 201 transitions, 2500 flow [2024-06-27 22:19:52,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 201 transitions, 2402 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:52,063 INFO L231 Difference]: Finished difference. Result has 128 places, 183 transitions, 2004 flow [2024-06-27 22:19:52,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1920, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2004, PETRI_PLACES=128, PETRI_TRANSITIONS=183} [2024-06-27 22:19:52,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-06-27 22:19:52,064 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 183 transitions, 2004 flow [2024-06-27 22:19:52,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:52,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:52,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:52,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:19:52,065 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:52,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash -558083123, now seen corresponding path program 3 times [2024-06-27 22:19:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:52,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444678198] [2024-06-27 22:19:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:52,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:53,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444678198] [2024-06-27 22:19:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444678198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:53,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919665470] [2024-06-27 22:19:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:53,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:19:53,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 183 transitions, 2004 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:53,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:53,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:19:53,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:53,640 INFO L124 PetriNetUnfolderBase]: 727/1391 cut-off events. [2024-06-27 22:19:53,641 INFO L125 PetriNetUnfolderBase]: For 12333/12333 co-relation queries the response was YES. [2024-06-27 22:19:53,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6727 conditions, 1391 events. 727/1391 cut-off events. For 12333/12333 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7740 event pairs, 281 based on Foata normal form. 1/1345 useless extension candidates. Maximal degree in co-relation 6665. Up to 1151 conditions per place. [2024-06-27 22:19:53,651 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 177 selfloop transitions, 19 changer transitions 0/203 dead transitions. [2024-06-27 22:19:53,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 2518 flow [2024-06-27 22:19:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 22:19:53,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-27 22:19:53,653 INFO L175 Difference]: Start difference. First operand has 128 places, 183 transitions, 2004 flow. Second operand 7 states and 116 transitions. [2024-06-27 22:19:53,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 2518 flow [2024-06-27 22:19:53,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 203 transitions, 2450 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:53,685 INFO L231 Difference]: Finished difference. Result has 130 places, 189 transitions, 2050 flow [2024-06-27 22:19:53,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2050, PETRI_PLACES=130, PETRI_TRANSITIONS=189} [2024-06-27 22:19:53,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 22:19:53,686 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 189 transitions, 2050 flow [2024-06-27 22:19:53,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:53,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:53,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:53,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:19:53,687 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:53,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -558349103, now seen corresponding path program 4 times [2024-06-27 22:19:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145622711] [2024-06-27 22:19:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145622711] [2024-06-27 22:19:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145622711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:54,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:54,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137628951] [2024-06-27 22:19:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:54,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:19:54,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 189 transitions, 2050 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:54,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:54,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:19:54,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:55,292 INFO L124 PetriNetUnfolderBase]: 725/1388 cut-off events. [2024-06-27 22:19:55,292 INFO L125 PetriNetUnfolderBase]: For 12578/12578 co-relation queries the response was YES. [2024-06-27 22:19:55,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6731 conditions, 1388 events. 725/1388 cut-off events. For 12578/12578 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7705 event pairs, 281 based on Foata normal form. 1/1342 useless extension candidates. Maximal degree in co-relation 6668. Up to 1130 conditions per place. [2024-06-27 22:19:55,305 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 167 selfloop transitions, 30 changer transitions 0/204 dead transitions. [2024-06-27 22:19:55,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 204 transitions, 2522 flow [2024-06-27 22:19:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 22:19:55,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-27 22:19:55,307 INFO L175 Difference]: Start difference. First operand has 130 places, 189 transitions, 2050 flow. Second operand 7 states and 118 transitions. [2024-06-27 22:19:55,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 204 transitions, 2522 flow [2024-06-27 22:19:55,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 204 transitions, 2456 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:55,340 INFO L231 Difference]: Finished difference. Result has 132 places, 189 transitions, 2054 flow [2024-06-27 22:19:55,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2054, PETRI_PLACES=132, PETRI_TRANSITIONS=189} [2024-06-27 22:19:55,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-27 22:19:55,341 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 189 transitions, 2054 flow [2024-06-27 22:19:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:55,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:55,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:19:55,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:55,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2109214995, now seen corresponding path program 1 times [2024-06-27 22:19:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892404686] [2024-06-27 22:19:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:56,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892404686] [2024-06-27 22:19:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892404686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:56,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188034923] [2024-06-27 22:19:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:56,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:56,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:56,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 189 transitions, 2054 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 22:19:56,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:56,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:56,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:57,231 INFO L124 PetriNetUnfolderBase]: 731/1380 cut-off events. [2024-06-27 22:19:57,232 INFO L125 PetriNetUnfolderBase]: For 14247/14249 co-relation queries the response was YES. [2024-06-27 22:19:57,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 1380 events. 731/1380 cut-off events. For 14247/14249 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7602 event pairs, 169 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 6857. Up to 937 conditions per place. [2024-06-27 22:19:57,244 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 145 selfloop transitions, 72 changer transitions 0/235 dead transitions. [2024-06-27 22:19:57,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 235 transitions, 2804 flow [2024-06-27 22:19:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:19:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:19:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:19:57,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 22:19:57,246 INFO L175 Difference]: Start difference. First operand has 132 places, 189 transitions, 2054 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:19:57,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 235 transitions, 2804 flow [2024-06-27 22:19:57,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 235 transitions, 2695 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:57,280 INFO L231 Difference]: Finished difference. Result has 140 places, 203 transitions, 2334 flow [2024-06-27 22:19:57,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2334, PETRI_PLACES=140, PETRI_TRANSITIONS=203} [2024-06-27 22:19:57,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 22:19:57,281 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 203 transitions, 2334 flow [2024-06-27 22:19:57,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 22:19:57,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:57,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:19:57,282 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:57,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash -914958463, now seen corresponding path program 2 times [2024-06-27 22:19:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183353078] [2024-06-27 22:19:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:59,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183353078] [2024-06-27 22:19:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183353078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:59,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:59,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:59,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238342172] [2024-06-27 22:19:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:59,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:59,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:59,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:59,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 203 transitions, 2334 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 22:19:59,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:59,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:59,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:59,699 INFO L124 PetriNetUnfolderBase]: 709/1399 cut-off events. [2024-06-27 22:19:59,700 INFO L125 PetriNetUnfolderBase]: For 16295/16301 co-relation queries the response was YES. [2024-06-27 22:19:59,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7187 conditions, 1399 events. 709/1399 cut-off events. For 16295/16301 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8005 event pairs, 177 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 7120. Up to 897 conditions per place. [2024-06-27 22:19:59,713 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 139 selfloop transitions, 71 changer transitions 0/239 dead transitions. [2024-06-27 22:19:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 239 transitions, 2989 flow [2024-06-27 22:19:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 22:19:59,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543918918918919 [2024-06-27 22:19:59,714 INFO L175 Difference]: Start difference. First operand has 140 places, 203 transitions, 2334 flow. Second operand 8 states and 161 transitions. [2024-06-27 22:19:59,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 239 transitions, 2989 flow [2024-06-27 22:19:59,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 239 transitions, 2893 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:59,763 INFO L231 Difference]: Finished difference. Result has 145 places, 209 transitions, 2508 flow [2024-06-27 22:19:59,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2508, PETRI_PLACES=145, PETRI_TRANSITIONS=209} [2024-06-27 22:19:59,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 22:19:59,764 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 209 transitions, 2508 flow [2024-06-27 22:19:59,764 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 22:19:59,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:59,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:19:59,764 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:59,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1012151780, now seen corresponding path program 1 times [2024-06-27 22:19:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176496339] [2024-06-27 22:19:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176496339] [2024-06-27 22:20:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176496339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:01,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:01,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954161900] [2024-06-27 22:20:01,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:01,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:01,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:01,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 209 transitions, 2508 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:01,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:01,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:01,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:02,007 INFO L124 PetriNetUnfolderBase]: 799/1447 cut-off events. [2024-06-27 22:20:02,008 INFO L125 PetriNetUnfolderBase]: For 17881/17881 co-relation queries the response was YES. [2024-06-27 22:20:02,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 1447 events. 799/1447 cut-off events. For 17881/17881 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7791 event pairs, 206 based on Foata normal form. 1/1415 useless extension candidates. Maximal degree in co-relation 8171. Up to 1172 conditions per place. [2024-06-27 22:20:02,019 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 176 selfloop transitions, 64 changer transitions 0/247 dead transitions. [2024-06-27 22:20:02,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 247 transitions, 3300 flow [2024-06-27 22:20:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:20:02,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:20:02,021 INFO L175 Difference]: Start difference. First operand has 145 places, 209 transitions, 2508 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:20:02,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 247 transitions, 3300 flow [2024-06-27 22:20:02,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 247 transitions, 3195 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:02,073 INFO L231 Difference]: Finished difference. Result has 152 places, 219 transitions, 2697 flow [2024-06-27 22:20:02,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2697, PETRI_PLACES=152, PETRI_TRANSITIONS=219} [2024-06-27 22:20:02,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 22:20:02,074 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 219 transitions, 2697 flow [2024-06-27 22:20:02,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:02,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:02,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:02,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:20:02,075 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:02,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:02,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1012146975, now seen corresponding path program 3 times [2024-06-27 22:20:02,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:02,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696952523] [2024-06-27 22:20:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696952523] [2024-06-27 22:20:03,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696952523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:03,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:03,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075904704] [2024-06-27 22:20:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:03,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:03,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:03,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 219 transitions, 2697 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 22:20:03,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:03,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:03,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:04,179 INFO L124 PetriNetUnfolderBase]: 726/1362 cut-off events. [2024-06-27 22:20:04,179 INFO L125 PetriNetUnfolderBase]: For 18369/18376 co-relation queries the response was YES. [2024-06-27 22:20:04,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7704 conditions, 1362 events. 726/1362 cut-off events. For 18369/18376 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7608 event pairs, 178 based on Foata normal form. 1/1321 useless extension candidates. Maximal degree in co-relation 7634. Up to 968 conditions per place. [2024-06-27 22:20:04,190 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 147 selfloop transitions, 62 changer transitions 0/242 dead transitions. [2024-06-27 22:20:04,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 242 transitions, 3193 flow [2024-06-27 22:20:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:20:04,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:20:04,191 INFO L175 Difference]: Start difference. First operand has 152 places, 219 transitions, 2697 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:20:04,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 242 transitions, 3193 flow [2024-06-27 22:20:04,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 242 transitions, 3068 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:04,236 INFO L231 Difference]: Finished difference. Result has 156 places, 219 transitions, 2712 flow [2024-06-27 22:20:04,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2712, PETRI_PLACES=156, PETRI_TRANSITIONS=219} [2024-06-27 22:20:04,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-27 22:20:04,237 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 219 transitions, 2712 flow [2024-06-27 22:20:04,237 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 22:20:04,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:04,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:04,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:20:04,238 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:04,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash 426749488, now seen corresponding path program 1 times [2024-06-27 22:20:04,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:04,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357667904] [2024-06-27 22:20:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:04,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357667904] [2024-06-27 22:20:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357667904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233389372] [2024-06-27 22:20:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:06,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:06,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 219 transitions, 2712 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:06,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:06,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:06,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:06,903 INFO L124 PetriNetUnfolderBase]: 824/1485 cut-off events. [2024-06-27 22:20:06,903 INFO L125 PetriNetUnfolderBase]: For 21043/21043 co-relation queries the response was YES. [2024-06-27 22:20:06,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8771 conditions, 1485 events. 824/1485 cut-off events. For 21043/21043 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8011 event pairs, 211 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 8698. Up to 1230 conditions per place. [2024-06-27 22:20:06,917 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 192 selfloop transitions, 57 changer transitions 0/256 dead transitions. [2024-06-27 22:20:06,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 256 transitions, 3489 flow [2024-06-27 22:20:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:20:06,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:20:06,918 INFO L175 Difference]: Start difference. First operand has 156 places, 219 transitions, 2712 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:20:06,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 256 transitions, 3489 flow [2024-06-27 22:20:06,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 256 transitions, 3351 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:06,998 INFO L231 Difference]: Finished difference. Result has 159 places, 231 transitions, 2851 flow [2024-06-27 22:20:06,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2851, PETRI_PLACES=159, PETRI_TRANSITIONS=231} [2024-06-27 22:20:06,999 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-27 22:20:06,999 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 231 transitions, 2851 flow [2024-06-27 22:20:06,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:06,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:06,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:20:07,000 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:07,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:07,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1122144742, now seen corresponding path program 2 times [2024-06-27 22:20:07,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:07,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874511530] [2024-06-27 22:20:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:08,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874511530] [2024-06-27 22:20:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874511530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347326606] [2024-06-27 22:20:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:08,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:08,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:08,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 231 transitions, 2851 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:08,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:09,288 INFO L124 PetriNetUnfolderBase]: 821/1480 cut-off events. [2024-06-27 22:20:09,289 INFO L125 PetriNetUnfolderBase]: For 21967/21967 co-relation queries the response was YES. [2024-06-27 22:20:09,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 1480 events. 821/1480 cut-off events. For 21967/21967 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7979 event pairs, 211 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 8795. Up to 1238 conditions per place. [2024-06-27 22:20:09,298 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 191 selfloop transitions, 54 changer transitions 0/252 dead transitions. [2024-06-27 22:20:09,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 3432 flow [2024-06-27 22:20:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:20:09,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 22:20:09,300 INFO L175 Difference]: Start difference. First operand has 159 places, 231 transitions, 2851 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:20:09,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 3432 flow [2024-06-27 22:20:09,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 252 transitions, 3279 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:09,347 INFO L231 Difference]: Finished difference. Result has 162 places, 231 transitions, 2821 flow [2024-06-27 22:20:09,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2821, PETRI_PLACES=162, PETRI_TRANSITIONS=231} [2024-06-27 22:20:09,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-27 22:20:09,347 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 231 transitions, 2821 flow [2024-06-27 22:20:09,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:09,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:09,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:09,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:20:09,348 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:09,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 152591842, now seen corresponding path program 3 times [2024-06-27 22:20:09,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:09,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165792810] [2024-06-27 22:20:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:11,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165792810] [2024-06-27 22:20:11,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165792810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:11,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45736215] [2024-06-27 22:20:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:11,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:11,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 231 transitions, 2821 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:11,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:11,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:11,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:11,988 INFO L124 PetriNetUnfolderBase]: 843/1516 cut-off events. [2024-06-27 22:20:11,989 INFO L125 PetriNetUnfolderBase]: For 23665/23665 co-relation queries the response was YES. [2024-06-27 22:20:11,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9127 conditions, 1516 events. 843/1516 cut-off events. For 23665/23665 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8239 event pairs, 202 based on Foata normal form. 1/1483 useless extension candidates. Maximal degree in co-relation 9052. Up to 1071 conditions per place. [2024-06-27 22:20:11,999 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 141 selfloop transitions, 121 changer transitions 0/269 dead transitions. [2024-06-27 22:20:11,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 269 transitions, 3808 flow [2024-06-27 22:20:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:20:12,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:20:12,000 INFO L175 Difference]: Start difference. First operand has 162 places, 231 transitions, 2821 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:20:12,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 269 transitions, 3808 flow [2024-06-27 22:20:12,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 269 transitions, 3715 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:12,055 INFO L231 Difference]: Finished difference. Result has 165 places, 245 transitions, 3253 flow [2024-06-27 22:20:12,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3253, PETRI_PLACES=165, PETRI_TRANSITIONS=245} [2024-06-27 22:20:12,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-27 22:20:12,055 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 245 transitions, 3253 flow [2024-06-27 22:20:12,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:12,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:12,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:12,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:20:12,056 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:12,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1122288737, now seen corresponding path program 4 times [2024-06-27 22:20:12,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053491431] [2024-06-27 22:20:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:13,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053491431] [2024-06-27 22:20:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053491431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:13,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819310335] [2024-06-27 22:20:13,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:13,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:13,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 245 transitions, 3253 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 22:20:13,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:13,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:14,378 INFO L124 PetriNetUnfolderBase]: 790/1468 cut-off events. [2024-06-27 22:20:14,378 INFO L125 PetriNetUnfolderBase]: For 24996/24998 co-relation queries the response was YES. [2024-06-27 22:20:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 1468 events. 790/1468 cut-off events. For 24996/24998 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8275 event pairs, 168 based on Foata normal form. 1/1428 useless extension candidates. Maximal degree in co-relation 8888. Up to 984 conditions per place. [2024-06-27 22:20:14,387 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 149 selfloop transitions, 84 changer transitions 0/275 dead transitions. [2024-06-27 22:20:14,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 275 transitions, 3934 flow [2024-06-27 22:20:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:20:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:20:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-27 22:20:14,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366795366795367 [2024-06-27 22:20:14,389 INFO L175 Difference]: Start difference. First operand has 165 places, 245 transitions, 3253 flow. Second operand 7 states and 139 transitions. [2024-06-27 22:20:14,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 275 transitions, 3934 flow [2024-06-27 22:20:14,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 275 transitions, 3776 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:14,447 INFO L231 Difference]: Finished difference. Result has 172 places, 253 transitions, 3467 flow [2024-06-27 22:20:14,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3467, PETRI_PLACES=172, PETRI_TRANSITIONS=253} [2024-06-27 22:20:14,448 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-27 22:20:14,448 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 253 transitions, 3467 flow [2024-06-27 22:20:14,448 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 22:20:14,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:14,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:14,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:20:14,449 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:14,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1122294689, now seen corresponding path program 1 times [2024-06-27 22:20:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:14,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461798362] [2024-06-27 22:20:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:14,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461798362] [2024-06-27 22:20:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461798362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:16,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:16,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470846668] [2024-06-27 22:20:16,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:16,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:16,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:16,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:16,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:16,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 253 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:16,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:16,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:16,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:16,793 INFO L124 PetriNetUnfolderBase]: 875/1592 cut-off events. [2024-06-27 22:20:16,793 INFO L125 PetriNetUnfolderBase]: For 28426/28426 co-relation queries the response was YES. [2024-06-27 22:20:16,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10173 conditions, 1592 events. 875/1592 cut-off events. For 28426/28426 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8862 event pairs, 233 based on Foata normal form. 1/1553 useless extension candidates. Maximal degree in co-relation 10092. Up to 1260 conditions per place. [2024-06-27 22:20:16,805 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 216 selfloop transitions, 66 changer transitions 0/289 dead transitions. [2024-06-27 22:20:16,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 289 transitions, 4389 flow [2024-06-27 22:20:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:20:16,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:20:16,807 INFO L175 Difference]: Start difference. First operand has 172 places, 253 transitions, 3467 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:20:16,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 289 transitions, 4389 flow [2024-06-27 22:20:16,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 289 transitions, 4306 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:16,877 INFO L231 Difference]: Finished difference. Result has 180 places, 266 transitions, 3742 flow [2024-06-27 22:20:16,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3742, PETRI_PLACES=180, PETRI_TRANSITIONS=266} [2024-06-27 22:20:16,878 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-27 22:20:16,878 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 266 transitions, 3742 flow [2024-06-27 22:20:16,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:16,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:16,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:20:16,879 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:16,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 152597422, now seen corresponding path program 4 times [2024-06-27 22:20:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346626502] [2024-06-27 22:20:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:18,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346626502] [2024-06-27 22:20:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346626502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:18,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497568308] [2024-06-27 22:20:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:18,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:18,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:18,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 266 transitions, 3742 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:18,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:18,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:19,282 INFO L124 PetriNetUnfolderBase]: 873/1568 cut-off events. [2024-06-27 22:20:19,283 INFO L125 PetriNetUnfolderBase]: For 29346/29346 co-relation queries the response was YES. [2024-06-27 22:20:19,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10449 conditions, 1568 events. 873/1568 cut-off events. For 29346/29346 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8596 event pairs, 200 based on Foata normal form. 1/1534 useless extension candidates. Maximal degree in co-relation 10364. Up to 1119 conditions per place. [2024-06-27 22:20:19,297 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 155 selfloop transitions, 127 changer transitions 0/289 dead transitions. [2024-06-27 22:20:19,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 289 transitions, 4504 flow [2024-06-27 22:20:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:20:19,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:20:19,298 INFO L175 Difference]: Start difference. First operand has 180 places, 266 transitions, 3742 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:20:19,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 289 transitions, 4504 flow [2024-06-27 22:20:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 289 transitions, 4406 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:19,382 INFO L231 Difference]: Finished difference. Result has 186 places, 266 transitions, 3905 flow [2024-06-27 22:20:19,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3905, PETRI_PLACES=186, PETRI_TRANSITIONS=266} [2024-06-27 22:20:19,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 22:20:19,382 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 266 transitions, 3905 flow [2024-06-27 22:20:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:19,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:19,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:19,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:20:19,383 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:19,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2079600290, now seen corresponding path program 5 times [2024-06-27 22:20:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:19,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892894825] [2024-06-27 22:20:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:20,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892894825] [2024-06-27 22:20:20,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892894825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:20,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:20,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:20,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241058977] [2024-06-27 22:20:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:20,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:20,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:20,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:20,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:20,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 266 transitions, 3905 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:21,199 INFO L124 PetriNetUnfolderBase]: 879/1579 cut-off events. [2024-06-27 22:20:21,199 INFO L125 PetriNetUnfolderBase]: For 31170/31170 co-relation queries the response was YES. [2024-06-27 22:20:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10732 conditions, 1579 events. 879/1579 cut-off events. For 31170/31170 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8693 event pairs, 263 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 10644. Up to 1352 conditions per place. [2024-06-27 22:20:21,213 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 46 changer transitions 0/291 dead transitions. [2024-06-27 22:20:21,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 291 transitions, 4651 flow [2024-06-27 22:20:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:20:21,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 22:20:21,215 INFO L175 Difference]: Start difference. First operand has 186 places, 266 transitions, 3905 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:20:21,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 291 transitions, 4651 flow [2024-06-27 22:20:21,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 291 transitions, 4358 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:21,297 INFO L231 Difference]: Finished difference. Result has 189 places, 276 transitions, 3892 flow [2024-06-27 22:20:21,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3892, PETRI_PLACES=189, PETRI_TRANSITIONS=276} [2024-06-27 22:20:21,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-27 22:20:21,298 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 276 transitions, 3892 flow [2024-06-27 22:20:21,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:21,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:21,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:21,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:20:21,299 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:21,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:21,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2083319360, now seen corresponding path program 6 times [2024-06-27 22:20:21,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:21,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942251170] [2024-06-27 22:20:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:22,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942251170] [2024-06-27 22:20:22,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942251170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:22,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:22,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016518515] [2024-06-27 22:20:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:22,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:22,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 276 transitions, 3892 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:22,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:22,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:22,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:23,281 INFO L124 PetriNetUnfolderBase]: 931/1687 cut-off events. [2024-06-27 22:20:23,281 INFO L125 PetriNetUnfolderBase]: For 33183/33183 co-relation queries the response was YES. [2024-06-27 22:20:23,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11257 conditions, 1687 events. 931/1687 cut-off events. For 33183/33183 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9550 event pairs, 270 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 11165. Up to 1221 conditions per place. [2024-06-27 22:20:23,296 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 240 selfloop transitions, 85 changer transitions 0/332 dead transitions. [2024-06-27 22:20:23,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 332 transitions, 5219 flow [2024-06-27 22:20:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:20:23,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:20:23,298 INFO L175 Difference]: Start difference. First operand has 189 places, 276 transitions, 3892 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:20:23,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 332 transitions, 5219 flow [2024-06-27 22:20:23,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 332 transitions, 5132 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:23,394 INFO L231 Difference]: Finished difference. Result has 195 places, 297 transitions, 4338 flow [2024-06-27 22:20:23,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4338, PETRI_PLACES=195, PETRI_TRANSITIONS=297} [2024-06-27 22:20:23,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-27 22:20:23,394 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 297 transitions, 4338 flow [2024-06-27 22:20:23,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:23,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:23,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:23,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:20:23,395 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:23,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2083324940, now seen corresponding path program 7 times [2024-06-27 22:20:23,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:23,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942843788] [2024-06-27 22:20:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942843788] [2024-06-27 22:20:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942843788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:24,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465939341] [2024-06-27 22:20:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:24,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:24,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 297 transitions, 4338 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:24,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:24,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:24,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:25,290 INFO L124 PetriNetUnfolderBase]: 929/1684 cut-off events. [2024-06-27 22:20:25,290 INFO L125 PetriNetUnfolderBase]: For 35487/35487 co-relation queries the response was YES. [2024-06-27 22:20:25,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1684 events. 929/1684 cut-off events. For 35487/35487 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9499 event pairs, 270 based on Foata normal form. 1/1643 useless extension candidates. Maximal degree in co-relation 11497. Up to 1294 conditions per place. [2024-06-27 22:20:25,303 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 209 selfloop transitions, 110 changer transitions 0/326 dead transitions. [2024-06-27 22:20:25,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 326 transitions, 5293 flow [2024-06-27 22:20:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:20:25,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:20:25,307 INFO L175 Difference]: Start difference. First operand has 195 places, 297 transitions, 4338 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:20:25,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 326 transitions, 5293 flow [2024-06-27 22:20:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 326 transitions, 5194 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:25,404 INFO L231 Difference]: Finished difference. Result has 203 places, 306 transitions, 4663 flow [2024-06-27 22:20:25,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4239, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4663, PETRI_PLACES=203, PETRI_TRANSITIONS=306} [2024-06-27 22:20:25,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 22:20:25,405 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 306 transitions, 4663 flow [2024-06-27 22:20:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:25,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:25,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:20:25,405 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:25,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2083325157, now seen corresponding path program 2 times [2024-06-27 22:20:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046931307] [2024-06-27 22:20:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:26,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046931307] [2024-06-27 22:20:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046931307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:26,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:26,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005396695] [2024-06-27 22:20:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:26,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:26,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:26,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 306 transitions, 4663 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:26,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:26,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:26,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:27,316 INFO L124 PetriNetUnfolderBase]: 945/1709 cut-off events. [2024-06-27 22:20:27,316 INFO L125 PetriNetUnfolderBase]: For 36901/36901 co-relation queries the response was YES. [2024-06-27 22:20:27,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 1709 events. 945/1709 cut-off events. For 36901/36901 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9678 event pairs, 274 based on Foata normal form. 1/1668 useless extension candidates. Maximal degree in co-relation 11916. Up to 1392 conditions per place. [2024-06-27 22:20:27,330 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 262 selfloop transitions, 64 changer transitions 0/333 dead transitions. [2024-06-27 22:20:27,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 333 transitions, 5565 flow [2024-06-27 22:20:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:20:27,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:20:27,332 INFO L175 Difference]: Start difference. First operand has 203 places, 306 transitions, 4663 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:20:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 333 transitions, 5565 flow [2024-06-27 22:20:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 333 transitions, 5379 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 22:20:27,439 INFO L231 Difference]: Finished difference. Result has 208 places, 315 transitions, 4713 flow [2024-06-27 22:20:27,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4477, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4713, PETRI_PLACES=208, PETRI_TRANSITIONS=315} [2024-06-27 22:20:27,440 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-27 22:20:27,440 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 315 transitions, 4713 flow [2024-06-27 22:20:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:27,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:27,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:20:27,441 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:27,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash 605262791, now seen corresponding path program 3 times [2024-06-27 22:20:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:27,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36152660] [2024-06-27 22:20:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:28,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36152660] [2024-06-27 22:20:28,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36152660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:28,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:28,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:28,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100037296] [2024-06-27 22:20:28,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:28,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:28,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:28,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:28,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 315 transitions, 4713 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:28,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:28,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:28,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:29,011 INFO L124 PetriNetUnfolderBase]: 957/1727 cut-off events. [2024-06-27 22:20:29,011 INFO L125 PetriNetUnfolderBase]: For 38267/38267 co-relation queries the response was YES. [2024-06-27 22:20:29,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 1727 events. 957/1727 cut-off events. For 38267/38267 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9795 event pairs, 274 based on Foata normal form. 1/1686 useless extension candidates. Maximal degree in co-relation 11994. Up to 1496 conditions per place. [2024-06-27 22:20:29,027 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 309 selfloop transitions, 22 changer transitions 0/338 dead transitions. [2024-06-27 22:20:29,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 338 transitions, 5577 flow [2024-06-27 22:20:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 22:20:29,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2024-06-27 22:20:29,029 INFO L175 Difference]: Start difference. First operand has 208 places, 315 transitions, 4713 flow. Second operand 8 states and 131 transitions. [2024-06-27 22:20:29,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 338 transitions, 5577 flow [2024-06-27 22:20:29,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 338 transitions, 5420 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:29,137 INFO L231 Difference]: Finished difference. Result has 211 places, 321 transitions, 4706 flow [2024-06-27 22:20:29,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4566, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4706, PETRI_PLACES=211, PETRI_TRANSITIONS=321} [2024-06-27 22:20:29,138 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 22:20:29,138 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 321 transitions, 4706 flow [2024-06-27 22:20:29,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:29,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:29,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:20:29,139 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:29,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1528301067, now seen corresponding path program 4 times [2024-06-27 22:20:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:29,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168764713] [2024-06-27 22:20:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:29,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:30,205 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 22:20:30,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:30,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168764713] [2024-06-27 22:20:30,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168764713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:30,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275197393] [2024-06-27 22:20:30,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:30,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:30,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:30,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:30,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:30,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 321 transitions, 4706 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:30,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:30,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:30,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:30,867 INFO L124 PetriNetUnfolderBase]: 1026/1863 cut-off events. [2024-06-27 22:20:30,868 INFO L125 PetriNetUnfolderBase]: For 42770/42770 co-relation queries the response was YES. [2024-06-27 22:20:30,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12742 conditions, 1863 events. 1026/1863 cut-off events. For 42770/42770 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10788 event pairs, 279 based on Foata normal form. 3/1817 useless extension candidates. Maximal degree in co-relation 12641. Up to 1523 conditions per place. [2024-06-27 22:20:30,885 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 28 changer transitions 0/361 dead transitions. [2024-06-27 22:20:30,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 361 transitions, 5852 flow [2024-06-27 22:20:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:20:30,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:20:30,886 INFO L175 Difference]: Start difference. First operand has 211 places, 321 transitions, 4706 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:20:30,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 361 transitions, 5852 flow [2024-06-27 22:20:31,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 361 transitions, 5735 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:31,052 INFO L231 Difference]: Finished difference. Result has 213 places, 328 transitions, 4756 flow [2024-06-27 22:20:31,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4589, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4756, PETRI_PLACES=213, PETRI_TRANSITIONS=328} [2024-06-27 22:20:31,052 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 22:20:31,052 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 328 transitions, 4756 flow [2024-06-27 22:20:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:31,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:31,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:31,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:20:31,053 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:31,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash -128952372, now seen corresponding path program 8 times [2024-06-27 22:20:31,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359260152] [2024-06-27 22:20:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:32,153 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 22:20:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359260152] [2024-06-27 22:20:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359260152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:32,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:32,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328574544] [2024-06-27 22:20:32,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:32,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:32,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:32,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:32,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:32,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 328 transitions, 4756 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:32,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:32,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:32,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:32,709 INFO L124 PetriNetUnfolderBase]: 1058/1922 cut-off events. [2024-06-27 22:20:32,709 INFO L125 PetriNetUnfolderBase]: For 45017/45017 co-relation queries the response was YES. [2024-06-27 22:20:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13388 conditions, 1922 events. 1058/1922 cut-off events. For 45017/45017 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11183 event pairs, 279 based on Foata normal form. 1/1872 useless extension candidates. Maximal degree in co-relation 13287. Up to 1568 conditions per place. [2024-06-27 22:20:32,727 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 318 selfloop transitions, 47 changer transitions 0/372 dead transitions. [2024-06-27 22:20:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 372 transitions, 6144 flow [2024-06-27 22:20:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:20:32,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:20:32,729 INFO L175 Difference]: Start difference. First operand has 213 places, 328 transitions, 4756 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:20:32,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 372 transitions, 6144 flow [2024-06-27 22:20:32,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 372 transitions, 6091 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:32,859 INFO L231 Difference]: Finished difference. Result has 218 places, 341 transitions, 5057 flow [2024-06-27 22:20:32,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5057, PETRI_PLACES=218, PETRI_TRANSITIONS=341} [2024-06-27 22:20:32,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-27 22:20:32,859 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 341 transitions, 5057 flow [2024-06-27 22:20:32,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:32,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:32,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:20:32,860 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:32,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash -128952155, now seen corresponding path program 5 times [2024-06-27 22:20:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:32,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329677494] [2024-06-27 22:20:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329677494] [2024-06-27 22:20:34,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329677494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:34,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:34,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237583532] [2024-06-27 22:20:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:34,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:34,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:34,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:34,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 341 transitions, 5057 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:34,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:34,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:34,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:34,666 INFO L124 PetriNetUnfolderBase]: 1056/1919 cut-off events. [2024-06-27 22:20:34,666 INFO L125 PetriNetUnfolderBase]: For 45722/45722 co-relation queries the response was YES. [2024-06-27 22:20:34,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13430 conditions, 1919 events. 1056/1919 cut-off events. For 45722/45722 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11182 event pairs, 279 based on Foata normal form. 1/1869 useless extension candidates. Maximal degree in co-relation 13326. Up to 1603 conditions per place. [2024-06-27 22:20:34,694 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 309 selfloop transitions, 48 changer transitions 0/364 dead transitions. [2024-06-27 22:20:34,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 364 transitions, 5965 flow [2024-06-27 22:20:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:20:34,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 22:20:34,696 INFO L175 Difference]: Start difference. First operand has 218 places, 341 transitions, 5057 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:20:34,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 364 transitions, 5965 flow [2024-06-27 22:20:34,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 364 transitions, 5805 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:34,830 INFO L231 Difference]: Finished difference. Result has 221 places, 345 transitions, 5059 flow [2024-06-27 22:20:34,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4903, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5059, PETRI_PLACES=221, PETRI_TRANSITIONS=345} [2024-06-27 22:20:34,830 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 22:20:34,830 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 345 transitions, 5059 flow [2024-06-27 22:20:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:34,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:34,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:34,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:20:34,831 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:34,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash -120706992, now seen corresponding path program 9 times [2024-06-27 22:20:34,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:34,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935092056] [2024-06-27 22:20:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:34,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:35,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:35,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935092056] [2024-06-27 22:20:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935092056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672833735] [2024-06-27 22:20:35,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:35,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:35,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:35,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 345 transitions, 5059 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:35,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:35,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:35,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:36,549 INFO L124 PetriNetUnfolderBase]: 1054/1916 cut-off events. [2024-06-27 22:20:36,549 INFO L125 PetriNetUnfolderBase]: For 45251/45251 co-relation queries the response was YES. [2024-06-27 22:20:36,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13331 conditions, 1916 events. 1054/1916 cut-off events. For 45251/45251 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11170 event pairs, 279 based on Foata normal form. 1/1866 useless extension candidates. Maximal degree in co-relation 13226. Up to 1635 conditions per place. [2024-06-27 22:20:36,564 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 335 selfloop transitions, 25 changer transitions 0/367 dead transitions. [2024-06-27 22:20:36,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 367 transitions, 5953 flow [2024-06-27 22:20:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:20:36,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 22:20:36,565 INFO L175 Difference]: Start difference. First operand has 221 places, 345 transitions, 5059 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:20:36,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 367 transitions, 5953 flow [2024-06-27 22:20:36,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 367 transitions, 5776 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:36,692 INFO L231 Difference]: Finished difference. Result has 224 places, 346 transitions, 4963 flow [2024-06-27 22:20:36,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4963, PETRI_PLACES=224, PETRI_TRANSITIONS=346} [2024-06-27 22:20:36,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-27 22:20:36,693 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 346 transitions, 4963 flow [2024-06-27 22:20:36,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:36,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:36,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:36,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:20:36,693 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:36,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash -128957952, now seen corresponding path program 10 times [2024-06-27 22:20:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:36,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696335074] [2024-06-27 22:20:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:36,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696335074] [2024-06-27 22:20:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696335074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:37,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:37,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788809801] [2024-06-27 22:20:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:37,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:37,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 346 transitions, 4963 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:37,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:37,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:37,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:38,390 INFO L124 PetriNetUnfolderBase]: 1052/1913 cut-off events. [2024-06-27 22:20:38,390 INFO L125 PetriNetUnfolderBase]: For 45311/45311 co-relation queries the response was YES. [2024-06-27 22:20:38,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13229 conditions, 1913 events. 1052/1913 cut-off events. For 45311/45311 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11147 event pairs, 279 based on Foata normal form. 1/1863 useless extension candidates. Maximal degree in co-relation 13122. Up to 1561 conditions per place. [2024-06-27 22:20:38,406 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 313 selfloop transitions, 51 changer transitions 0/371 dead transitions. [2024-06-27 22:20:38,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 371 transitions, 5902 flow [2024-06-27 22:20:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 22:20:38,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-27 22:20:38,407 INFO L175 Difference]: Start difference. First operand has 224 places, 346 transitions, 4963 flow. Second operand 8 states and 137 transitions. [2024-06-27 22:20:38,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 371 transitions, 5902 flow [2024-06-27 22:20:38,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 371 transitions, 5794 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:38,570 INFO L231 Difference]: Finished difference. Result has 225 places, 347 transitions, 4983 flow [2024-06-27 22:20:38,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4983, PETRI_PLACES=225, PETRI_TRANSITIONS=347} [2024-06-27 22:20:38,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 22:20:38,570 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 347 transitions, 4983 flow [2024-06-27 22:20:38,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:38,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:38,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:20:38,571 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -128958107, now seen corresponding path program 5 times [2024-06-27 22:20:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36167438] [2024-06-27 22:20:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:39,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36167438] [2024-06-27 22:20:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36167438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:39,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870575683] [2024-06-27 22:20:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:39,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:39,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 347 transitions, 4983 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:39,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:39,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:39,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:40,594 INFO L124 PetriNetUnfolderBase]: 996/1862 cut-off events. [2024-06-27 22:20:40,594 INFO L125 PetriNetUnfolderBase]: For 45833/45833 co-relation queries the response was YES. [2024-06-27 22:20:40,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12893 conditions, 1862 events. 996/1862 cut-off events. For 45833/45833 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11128 event pairs, 249 based on Foata normal form. 1/1812 useless extension candidates. Maximal degree in co-relation 12786. Up to 1456 conditions per place. [2024-06-27 22:20:40,611 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 298 selfloop transitions, 30 changer transitions 0/376 dead transitions. [2024-06-27 22:20:40,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 376 transitions, 5899 flow [2024-06-27 22:20:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:20:40,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 22:20:40,613 INFO L175 Difference]: Start difference. First operand has 225 places, 347 transitions, 4983 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:20:40,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 376 transitions, 5899 flow [2024-06-27 22:20:40,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 376 transitions, 5817 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:40,757 INFO L231 Difference]: Finished difference. Result has 230 places, 353 transitions, 5103 flow [2024-06-27 22:20:40,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5103, PETRI_PLACES=230, PETRI_TRANSITIONS=353} [2024-06-27 22:20:40,758 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 22:20:40,758 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 353 transitions, 5103 flow [2024-06-27 22:20:40,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:40,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:40,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:40,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:20:40,760 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:40,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1691434914, now seen corresponding path program 1 times [2024-06-27 22:20:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149154794] [2024-06-27 22:20:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149154794] [2024-06-27 22:20:41,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149154794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:41,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:41,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:20:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374889724] [2024-06-27 22:20:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:20:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:20:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:20:41,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:20:41,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 353 transitions, 5103 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 22:20:41,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:41,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:20:41,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:42,669 INFO L124 PetriNetUnfolderBase]: 966/1891 cut-off events. [2024-06-27 22:20:42,669 INFO L125 PetriNetUnfolderBase]: For 55155/55171 co-relation queries the response was YES. [2024-06-27 22:20:42,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13340 conditions, 1891 events. 966/1891 cut-off events. For 55155/55171 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11857 event pairs, 99 based on Foata normal form. 2/1828 useless extension candidates. Maximal degree in co-relation 13230. Up to 1127 conditions per place. [2024-06-27 22:20:42,688 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 250 selfloop transitions, 84 changer transitions 0/396 dead transitions. [2024-06-27 22:20:42,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 396 transitions, 6217 flow [2024-06-27 22:20:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:42,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 22:20:42,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-06-27 22:20:42,689 INFO L175 Difference]: Start difference. First operand has 230 places, 353 transitions, 5103 flow. Second operand 10 states and 198 transitions. [2024-06-27 22:20:42,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 396 transitions, 6217 flow [2024-06-27 22:20:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 396 transitions, 6123 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 22:20:42,838 INFO L231 Difference]: Finished difference. Result has 241 places, 362 transitions, 5484 flow [2024-06-27 22:20:42,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5009, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5484, PETRI_PLACES=241, PETRI_TRANSITIONS=362} [2024-06-27 22:20:42,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 22:20:42,839 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 362 transitions, 5484 flow [2024-06-27 22:20:42,839 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 22:20:42,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:42,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:42,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:20:42,839 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:42,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 435380660, now seen corresponding path program 2 times [2024-06-27 22:20:42,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:42,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210433426] [2024-06-27 22:20:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:44,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:44,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210433426] [2024-06-27 22:20:44,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210433426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:44,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:44,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813450942] [2024-06-27 22:20:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:44,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:44,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:44,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:44,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:44,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 362 transitions, 5484 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:44,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:44,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:44,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:45,626 INFO L124 PetriNetUnfolderBase]: 1141/2067 cut-off events. [2024-06-27 22:20:45,626 INFO L125 PetriNetUnfolderBase]: For 60354/60354 co-relation queries the response was YES. [2024-06-27 22:20:45,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15250 conditions, 2067 events. 1141/2067 cut-off events. For 60354/60354 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12207 event pairs, 217 based on Foata normal form. 1/2016 useless extension candidates. Maximal degree in co-relation 15134. Up to 1355 conditions per place. [2024-06-27 22:20:45,645 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 223 selfloop transitions, 176 changer transitions 0/406 dead transitions. [2024-06-27 22:20:45,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 406 transitions, 7056 flow [2024-06-27 22:20:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:20:45,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-27 22:20:45,646 INFO L175 Difference]: Start difference. First operand has 241 places, 362 transitions, 5484 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:20:45,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 406 transitions, 7056 flow [2024-06-27 22:20:45,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 406 transitions, 6946 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:45,845 INFO L231 Difference]: Finished difference. Result has 247 places, 378 transitions, 6128 flow [2024-06-27 22:20:45,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5374, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6128, PETRI_PLACES=247, PETRI_TRANSITIONS=378} [2024-06-27 22:20:45,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-27 22:20:45,846 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 378 transitions, 6128 flow [2024-06-27 22:20:45,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:45,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:45,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:20:45,846 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:45,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1383640308, now seen corresponding path program 1 times [2024-06-27 22:20:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912956038] [2024-06-27 22:20:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912956038] [2024-06-27 22:20:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912956038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:47,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:47,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:47,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286776688] [2024-06-27 22:20:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:47,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:47,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:20:47,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 378 transitions, 6128 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:20:47,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:48,173 INFO L124 PetriNetUnfolderBase]: 1169/2155 cut-off events. [2024-06-27 22:20:48,173 INFO L125 PetriNetUnfolderBase]: For 65493/65493 co-relation queries the response was YES. [2024-06-27 22:20:48,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16212 conditions, 2155 events. 1169/2155 cut-off events. For 65493/65493 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12884 event pairs, 195 based on Foata normal form. 1/2095 useless extension candidates. Maximal degree in co-relation 16095. Up to 1530 conditions per place. [2024-06-27 22:20:48,196 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 319 selfloop transitions, 97 changer transitions 0/423 dead transitions. [2024-06-27 22:20:48,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 423 transitions, 7487 flow [2024-06-27 22:20:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:20:48,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 22:20:48,197 INFO L175 Difference]: Start difference. First operand has 247 places, 378 transitions, 6128 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:20:48,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 423 transitions, 7487 flow [2024-06-27 22:20:48,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 423 transitions, 7280 flow, removed 94 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:48,411 INFO L231 Difference]: Finished difference. Result has 257 places, 388 transitions, 6401 flow [2024-06-27 22:20:48,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5963, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6401, PETRI_PLACES=257, PETRI_TRANSITIONS=388} [2024-06-27 22:20:48,412 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 22:20:48,412 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 388 transitions, 6401 flow [2024-06-27 22:20:48,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:48,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:48,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:20:48,413 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:48,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1223217302, now seen corresponding path program 2 times [2024-06-27 22:20:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:48,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115655043] [2024-06-27 22:20:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115655043] [2024-06-27 22:20:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115655043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223783794] [2024-06-27 22:20:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:49,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:50,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:50,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 388 transitions, 6401 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 22:20:50,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:50,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:50,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:50,811 INFO L124 PetriNetUnfolderBase]: 1089/2132 cut-off events. [2024-06-27 22:20:50,812 INFO L125 PetriNetUnfolderBase]: For 68574/68611 co-relation queries the response was YES. [2024-06-27 22:20:50,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15676 conditions, 2132 events. 1089/2132 cut-off events. For 68574/68611 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13529 event pairs, 167 based on Foata normal form. 7/2042 useless extension candidates. Maximal degree in co-relation 15555. Up to 1281 conditions per place. [2024-06-27 22:20:50,837 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 277 selfloop transitions, 80 changer transitions 0/428 dead transitions. [2024-06-27 22:20:50,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 428 transitions, 7450 flow [2024-06-27 22:20:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 22:20:50,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-06-27 22:20:50,838 INFO L175 Difference]: Start difference. First operand has 257 places, 388 transitions, 6401 flow. Second operand 10 states and 189 transitions. [2024-06-27 22:20:50,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 428 transitions, 7450 flow [2024-06-27 22:20:51,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 428 transitions, 7286 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:51,056 INFO L231 Difference]: Finished difference. Result has 260 places, 391 transitions, 6461 flow [2024-06-27 22:20:51,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6239, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6461, PETRI_PLACES=260, PETRI_TRANSITIONS=391} [2024-06-27 22:20:51,057 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 22:20:51,057 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 391 transitions, 6461 flow [2024-06-27 22:20:51,057 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 22:20:51,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:51,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:51,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:20:51,058 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:51,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:51,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1225128576, now seen corresponding path program 2 times [2024-06-27 22:20:51,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:51,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307163016] [2024-06-27 22:20:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:51,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:52,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307163016] [2024-06-27 22:20:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307163016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:52,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:20:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507567384] [2024-06-27 22:20:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:52,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:20:52,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:52,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:20:52,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:20:52,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:52,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 391 transitions, 6461 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:52,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:52,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:53,522 INFO L124 PetriNetUnfolderBase]: 1158/2226 cut-off events. [2024-06-27 22:20:53,522 INFO L125 PetriNetUnfolderBase]: For 63343/63353 co-relation queries the response was YES. [2024-06-27 22:20:53,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16222 conditions, 2226 events. 1158/2226 cut-off events. For 63343/63353 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13952 event pairs, 245 based on Foata normal form. 1/2136 useless extension candidates. Maximal degree in co-relation 16099. Up to 1498 conditions per place. [2024-06-27 22:20:53,549 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 315 selfloop transitions, 91 changer transitions 0/432 dead transitions. [2024-06-27 22:20:53,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 432 transitions, 7638 flow [2024-06-27 22:20:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:20:53,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:20:53,550 INFO L175 Difference]: Start difference. First operand has 260 places, 391 transitions, 6461 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:20:53,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 432 transitions, 7638 flow [2024-06-27 22:20:53,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 432 transitions, 7451 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:53,778 INFO L231 Difference]: Finished difference. Result has 264 places, 397 transitions, 6592 flow [2024-06-27 22:20:53,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6274, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6592, PETRI_PLACES=264, PETRI_TRANSITIONS=397} [2024-06-27 22:20:53,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-27 22:20:53,779 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 397 transitions, 6592 flow [2024-06-27 22:20:53,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:53,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:53,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:53,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:20:53,780 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:53,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1225124732, now seen corresponding path program 3 times [2024-06-27 22:20:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34670089] [2024-06-27 22:20:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34670089] [2024-06-27 22:20:55,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34670089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:55,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:55,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608838070] [2024-06-27 22:20:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:55,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:55,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:55,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:55,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 397 transitions, 6592 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 22:20:55,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:55,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:55,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:56,283 INFO L124 PetriNetUnfolderBase]: 1116/2196 cut-off events. [2024-06-27 22:20:56,284 INFO L125 PetriNetUnfolderBase]: For 68210/68237 co-relation queries the response was YES. [2024-06-27 22:20:56,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16120 conditions, 2196 events. 1116/2196 cut-off events. For 68210/68237 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14084 event pairs, 204 based on Foata normal form. 5/2105 useless extension candidates. Maximal degree in co-relation 15995. Up to 1425 conditions per place. [2024-06-27 22:20:56,311 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 284 selfloop transitions, 77 changer transitions 0/435 dead transitions. [2024-06-27 22:20:56,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 435 transitions, 7552 flow [2024-06-27 22:20:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 22:20:56,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 22:20:56,312 INFO L175 Difference]: Start difference. First operand has 264 places, 397 transitions, 6592 flow. Second operand 10 states and 188 transitions. [2024-06-27 22:20:56,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 435 transitions, 7552 flow [2024-06-27 22:20:56,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 435 transitions, 7422 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:56,541 INFO L231 Difference]: Finished difference. Result has 268 places, 399 transitions, 6656 flow [2024-06-27 22:20:56,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6462, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6656, PETRI_PLACES=268, PETRI_TRANSITIONS=399} [2024-06-27 22:20:56,543 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-27 22:20:56,543 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 399 transitions, 6656 flow [2024-06-27 22:20:56,543 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 22:20:56,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:56,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:56,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:20:56,543 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:56,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1311820386, now seen corresponding path program 3 times [2024-06-27 22:20:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517818566] [2024-06-27 22:20:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:56,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:58,091 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 22:20:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:58,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517818566] [2024-06-27 22:20:58,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517818566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:58,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:58,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:58,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299619556] [2024-06-27 22:20:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:58,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:58,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:58,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 399 transitions, 6656 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:58,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:58,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:58,895 INFO L124 PetriNetUnfolderBase]: 1196/2202 cut-off events. [2024-06-27 22:20:58,895 INFO L125 PetriNetUnfolderBase]: For 67863/67873 co-relation queries the response was YES. [2024-06-27 22:20:58,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 2202 events. 1196/2202 cut-off events. For 67863/67873 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13640 event pairs, 237 based on Foata normal form. 1/2133 useless extension candidates. Maximal degree in co-relation 16528. Up to 1630 conditions per place. [2024-06-27 22:20:58,916 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 326 selfloop transitions, 81 changer transitions 0/433 dead transitions. [2024-06-27 22:20:58,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 433 transitions, 7770 flow [2024-06-27 22:20:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:58,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:20:58,917 INFO L175 Difference]: Start difference. First operand has 268 places, 399 transitions, 6656 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:58,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 433 transitions, 7770 flow [2024-06-27 22:20:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 433 transitions, 7614 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:59,162 INFO L231 Difference]: Finished difference. Result has 269 places, 403 transitions, 6712 flow [2024-06-27 22:20:59,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6500, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6712, PETRI_PLACES=269, PETRI_TRANSITIONS=403} [2024-06-27 22:20:59,163 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 22:20:59,163 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 403 transitions, 6712 flow [2024-06-27 22:20:59,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:59,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:59,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:59,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:20:59,163 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:59,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1734302268, now seen corresponding path program 4 times [2024-06-27 22:20:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:59,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13377658] [2024-06-27 22:20:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:59,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:01,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13377658] [2024-06-27 22:21:01,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13377658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:01,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:01,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255132492] [2024-06-27 22:21:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:01,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 403 transitions, 6712 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:01,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:01,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:01,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:01,965 INFO L124 PetriNetUnfolderBase]: 1120/2118 cut-off events. [2024-06-27 22:21:01,965 INFO L125 PetriNetUnfolderBase]: For 69317/69339 co-relation queries the response was YES. [2024-06-27 22:21:01,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 2118 events. 1120/2118 cut-off events. For 69317/69339 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13330 event pairs, 216 based on Foata normal form. 5/2051 useless extension candidates. Maximal degree in co-relation 15952. Up to 1493 conditions per place. [2024-06-27 22:21:01,989 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 290 selfloop transitions, 66 changer transitions 0/432 dead transitions. [2024-06-27 22:21:01,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 432 transitions, 7576 flow [2024-06-27 22:21:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:21:01,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:21:01,990 INFO L175 Difference]: Start difference. First operand has 269 places, 403 transitions, 6712 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:21:01,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 432 transitions, 7576 flow [2024-06-27 22:21:02,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 432 transitions, 7386 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:02,222 INFO L231 Difference]: Finished difference. Result has 271 places, 403 transitions, 6660 flow [2024-06-27 22:21:02,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6522, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6660, PETRI_PLACES=271, PETRI_TRANSITIONS=403} [2024-06-27 22:21:02,223 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 22:21:02,223 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 403 transitions, 6660 flow [2024-06-27 22:21:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:02,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:02,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:02,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:21:02,223 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:02,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1734420502, now seen corresponding path program 4 times [2024-06-27 22:21:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:02,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531337815] [2024-06-27 22:21:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531337815] [2024-06-27 22:21:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531337815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:04,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:04,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563737693] [2024-06-27 22:21:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:04,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:04,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:04,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 403 transitions, 6660 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:04,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:04,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:04,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:04,870 INFO L124 PetriNetUnfolderBase]: 1197/2206 cut-off events. [2024-06-27 22:21:04,870 INFO L125 PetriNetUnfolderBase]: For 67861/67871 co-relation queries the response was YES. [2024-06-27 22:21:04,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16496 conditions, 2206 events. 1197/2206 cut-off events. For 67861/67871 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13663 event pairs, 251 based on Foata normal form. 1/2134 useless extension candidates. Maximal degree in co-relation 16368. Up to 1694 conditions per place. [2024-06-27 22:21:04,896 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 329 selfloop transitions, 78 changer transitions 0/433 dead transitions. [2024-06-27 22:21:04,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 433 transitions, 7649 flow [2024-06-27 22:21:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:21:04,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:21:04,897 INFO L175 Difference]: Start difference. First operand has 271 places, 403 transitions, 6660 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:21:04,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 433 transitions, 7649 flow [2024-06-27 22:21:05,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 433 transitions, 7485 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:05,188 INFO L231 Difference]: Finished difference. Result has 274 places, 408 transitions, 6796 flow [2024-06-27 22:21:05,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6506, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6796, PETRI_PLACES=274, PETRI_TRANSITIONS=408} [2024-06-27 22:21:05,189 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 22:21:05,189 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 408 transitions, 6796 flow [2024-06-27 22:21:05,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:05,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:05,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:05,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:21:05,190 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:05,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1734456028, now seen corresponding path program 3 times [2024-06-27 22:21:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:05,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636520233] [2024-06-27 22:21:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:05,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636520233] [2024-06-27 22:21:06,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636520233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:06,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381692840] [2024-06-27 22:21:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:06,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:06,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:06,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:06,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:06,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 408 transitions, 6796 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:06,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:06,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:06,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:07,764 INFO L124 PetriNetUnfolderBase]: 1276/2305 cut-off events. [2024-06-27 22:21:07,764 INFO L125 PetriNetUnfolderBase]: For 73774/73774 co-relation queries the response was YES. [2024-06-27 22:21:07,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 2305 events. 1276/2305 cut-off events. For 73774/73774 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13990 event pairs, 252 based on Foata normal form. 1/2252 useless extension candidates. Maximal degree in co-relation 17720. Up to 1883 conditions per place. [2024-06-27 22:21:07,791 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 347 selfloop transitions, 99 changer transitions 0/453 dead transitions. [2024-06-27 22:21:07,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 453 transitions, 8182 flow [2024-06-27 22:21:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:21:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:21:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:21:07,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:21:07,793 INFO L175 Difference]: Start difference. First operand has 274 places, 408 transitions, 6796 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:21:07,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 453 transitions, 8182 flow [2024-06-27 22:21:08,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 453 transitions, 8082 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:08,282 INFO L231 Difference]: Finished difference. Result has 283 places, 422 transitions, 7166 flow [2024-06-27 22:21:08,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6696, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7166, PETRI_PLACES=283, PETRI_TRANSITIONS=422} [2024-06-27 22:21:08,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-27 22:21:08,284 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 422 transitions, 7166 flow [2024-06-27 22:21:08,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:08,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:08,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:21:08,284 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:08,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash 435375824, now seen corresponding path program 5 times [2024-06-27 22:21:08,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:08,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277125960] [2024-06-27 22:21:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:10,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:10,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277125960] [2024-06-27 22:21:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277125960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:10,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407129851] [2024-06-27 22:21:10,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:10,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:10,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 422 transitions, 7166 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:10,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:10,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:10,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:11,078 INFO L124 PetriNetUnfolderBase]: 1250/2295 cut-off events. [2024-06-27 22:21:11,078 INFO L125 PetriNetUnfolderBase]: For 73921/73927 co-relation queries the response was YES. [2024-06-27 22:21:11,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17425 conditions, 2295 events. 1250/2295 cut-off events. For 73921/73927 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14314 event pairs, 205 based on Foata normal form. 1/2221 useless extension candidates. Maximal degree in co-relation 17292. Up to 1509 conditions per place. [2024-06-27 22:21:11,176 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 285 selfloop transitions, 141 changer transitions 0/454 dead transitions. [2024-06-27 22:21:11,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 454 transitions, 8350 flow [2024-06-27 22:21:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:21:11,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:21:11,178 INFO L175 Difference]: Start difference. First operand has 283 places, 422 transitions, 7166 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:21:11,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 454 transitions, 8350 flow [2024-06-27 22:21:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 454 transitions, 8083 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:11,473 INFO L231 Difference]: Finished difference. Result has 287 places, 430 transitions, 7419 flow [2024-06-27 22:21:11,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6899, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7419, PETRI_PLACES=287, PETRI_TRANSITIONS=430} [2024-06-27 22:21:11,474 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 22:21:11,474 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 430 transitions, 7419 flow [2024-06-27 22:21:11,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:11,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:11,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:11,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:21:11,475 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:11,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash 435375700, now seen corresponding path program 5 times [2024-06-27 22:21:11,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:11,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899955433] [2024-06-27 22:21:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:13,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899955433] [2024-06-27 22:21:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899955433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:13,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:13,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:13,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533770046] [2024-06-27 22:21:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:13,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:13,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 430 transitions, 7419 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:13,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:13,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:13,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:14,162 INFO L124 PetriNetUnfolderBase]: 1199/2258 cut-off events. [2024-06-27 22:21:14,162 INFO L125 PetriNetUnfolderBase]: For 80464/80470 co-relation queries the response was YES. [2024-06-27 22:21:14,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17705 conditions, 2258 events. 1199/2258 cut-off events. For 80464/80470 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14322 event pairs, 181 based on Foata normal form. 2/2186 useless extension candidates. Maximal degree in co-relation 17568. Up to 1505 conditions per place. [2024-06-27 22:21:14,193 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 277 selfloop transitions, 101 changer transitions 0/462 dead transitions. [2024-06-27 22:21:14,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 462 transitions, 8447 flow [2024-06-27 22:21:14,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:21:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:21:14,194 INFO L175 Difference]: Start difference. First operand has 287 places, 430 transitions, 7419 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:21:14,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 462 transitions, 8447 flow [2024-06-27 22:21:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 462 transitions, 8325 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:14,699 INFO L231 Difference]: Finished difference. Result has 296 places, 437 transitions, 7753 flow [2024-06-27 22:21:14,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7299, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7753, PETRI_PLACES=296, PETRI_TRANSITIONS=437} [2024-06-27 22:21:14,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 22:21:14,700 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 437 transitions, 7753 flow [2024-06-27 22:21:14,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:14,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:14,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:14,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:21:14,701 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:14,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash 435380474, now seen corresponding path program 6 times [2024-06-27 22:21:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:14,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140664205] [2024-06-27 22:21:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:16,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140664205] [2024-06-27 22:21:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140664205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791059384] [2024-06-27 22:21:16,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:16,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:16,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 437 transitions, 7753 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:16,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:16,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:16,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:17,369 INFO L124 PetriNetUnfolderBase]: 1293/2385 cut-off events. [2024-06-27 22:21:17,369 INFO L125 PetriNetUnfolderBase]: For 83309/83315 co-relation queries the response was YES. [2024-06-27 22:21:17,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18919 conditions, 2385 events. 1293/2385 cut-off events. For 83309/83315 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15044 event pairs, 202 based on Foata normal form. 1/2307 useless extension candidates. Maximal degree in co-relation 18777. Up to 1570 conditions per place. [2024-06-27 22:21:17,402 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 281 selfloop transitions, 166 changer transitions 0/475 dead transitions. [2024-06-27 22:21:17,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 475 transitions, 9013 flow [2024-06-27 22:21:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:21:17,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:21:17,403 INFO L175 Difference]: Start difference. First operand has 296 places, 437 transitions, 7753 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:21:17,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 475 transitions, 9013 flow [2024-06-27 22:21:17,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 475 transitions, 8887 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:17,805 INFO L231 Difference]: Finished difference. Result has 303 places, 451 transitions, 8315 flow [2024-06-27 22:21:17,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7627, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8315, PETRI_PLACES=303, PETRI_TRANSITIONS=451} [2024-06-27 22:21:17,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 22:21:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 451 transitions, 8315 flow [2024-06-27 22:21:17,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:17,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:17,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:21:17,807 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:17,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash 431397628, now seen corresponding path program 4 times [2024-06-27 22:21:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:17,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230739313] [2024-06-27 22:21:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:17,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:19,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:19,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230739313] [2024-06-27 22:21:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230739313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:19,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:19,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012388512] [2024-06-27 22:21:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:19,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:19,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:19,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:19,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 451 transitions, 8315 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:19,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:19,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:19,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:20,792 INFO L124 PetriNetUnfolderBase]: 1359/2475 cut-off events. [2024-06-27 22:21:20,793 INFO L125 PetriNetUnfolderBase]: For 92322/92322 co-relation queries the response was YES. [2024-06-27 22:21:20,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20780 conditions, 2475 events. 1359/2475 cut-off events. For 92322/92322 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15398 event pairs, 248 based on Foata normal form. 1/2412 useless extension candidates. Maximal degree in co-relation 20635. Up to 1697 conditions per place. [2024-06-27 22:21:20,828 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 268 selfloop transitions, 206 changer transitions 0/481 dead transitions. [2024-06-27 22:21:20,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 481 transitions, 9709 flow [2024-06-27 22:21:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:21:20,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:21:20,829 INFO L175 Difference]: Start difference. First operand has 303 places, 451 transitions, 8315 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:21:20,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 481 transitions, 9709 flow [2024-06-27 22:21:21,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 481 transitions, 9531 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:21,358 INFO L231 Difference]: Finished difference. Result has 309 places, 454 transitions, 8594 flow [2024-06-27 22:21:21,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8137, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8594, PETRI_PLACES=309, PETRI_TRANSITIONS=454} [2024-06-27 22:21:21,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 22:21:21,359 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 454 transitions, 8594 flow [2024-06-27 22:21:21,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:21,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:21,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:21,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:21:21,359 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:21,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash 435560398, now seen corresponding path program 1 times [2024-06-27 22:21:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086591213] [2024-06-27 22:21:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:23,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:23,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086591213] [2024-06-27 22:21:23,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086591213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:23,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:23,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958115514] [2024-06-27 22:21:23,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:23,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:23,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:23,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:23,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:23,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 454 transitions, 8594 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:23,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:23,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:24,610 INFO L124 PetriNetUnfolderBase]: 1409/2565 cut-off events. [2024-06-27 22:21:24,611 INFO L125 PetriNetUnfolderBase]: For 98722/98722 co-relation queries the response was YES. [2024-06-27 22:21:24,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21490 conditions, 2565 events. 1409/2565 cut-off events. For 98722/98722 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16037 event pairs, 309 based on Foata normal form. 2/2501 useless extension candidates. Maximal degree in co-relation 21345. Up to 1994 conditions per place. [2024-06-27 22:21:24,640 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 397 selfloop transitions, 100 changer transitions 0/504 dead transitions. [2024-06-27 22:21:24,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 504 transitions, 10212 flow [2024-06-27 22:21:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:21:24,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:21:24,641 INFO L175 Difference]: Start difference. First operand has 309 places, 454 transitions, 8594 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:21:24,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 504 transitions, 10212 flow [2024-06-27 22:21:25,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 504 transitions, 9858 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:25,081 INFO L231 Difference]: Finished difference. Result has 316 places, 475 transitions, 8832 flow [2024-06-27 22:21:25,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8240, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8832, PETRI_PLACES=316, PETRI_TRANSITIONS=475} [2024-06-27 22:21:25,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 22:21:25,082 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 475 transitions, 8832 flow [2024-06-27 22:21:25,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:25,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:25,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:25,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:21:25,082 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:25,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 435553640, now seen corresponding path program 5 times [2024-06-27 22:21:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311462849] [2024-06-27 22:21:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:25,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311462849] [2024-06-27 22:21:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311462849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:26,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:26,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953752531] [2024-06-27 22:21:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:27,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:27,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 475 transitions, 8832 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:27,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:27,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:27,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:28,003 INFO L124 PetriNetUnfolderBase]: 1407/2561 cut-off events. [2024-06-27 22:21:28,003 INFO L125 PetriNetUnfolderBase]: For 98047/98047 co-relation queries the response was YES. [2024-06-27 22:21:28,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21705 conditions, 2561 events. 1407/2561 cut-off events. For 98047/98047 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16006 event pairs, 246 based on Foata normal form. 1/2496 useless extension candidates. Maximal degree in co-relation 21556. Up to 1770 conditions per place. [2024-06-27 22:21:28,038 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 296 selfloop transitions, 198 changer transitions 0/501 dead transitions. [2024-06-27 22:21:28,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 501 transitions, 10140 flow [2024-06-27 22:21:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:21:28,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:21:28,040 INFO L175 Difference]: Start difference. First operand has 316 places, 475 transitions, 8832 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:21:28,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 501 transitions, 10140 flow [2024-06-27 22:21:28,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 501 transitions, 9996 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:28,588 INFO L231 Difference]: Finished difference. Result has 322 places, 475 transitions, 9091 flow [2024-06-27 22:21:28,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8688, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9091, PETRI_PLACES=322, PETRI_TRANSITIONS=475} [2024-06-27 22:21:28,588 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 22:21:28,589 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 475 transitions, 9091 flow [2024-06-27 22:21:28,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:28,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:28,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:21:28,589 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:28,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash 435553454, now seen corresponding path program 7 times [2024-06-27 22:21:28,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927191574] [2024-06-27 22:21:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927191574] [2024-06-27 22:21:30,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927191574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:30,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:30,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:30,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067240053] [2024-06-27 22:21:30,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:30,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:30,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:30,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 475 transitions, 9091 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:30,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:30,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:30,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:31,274 INFO L124 PetriNetUnfolderBase]: 1354/2482 cut-off events. [2024-06-27 22:21:31,274 INFO L125 PetriNetUnfolderBase]: For 93413/93426 co-relation queries the response was YES. [2024-06-27 22:21:31,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20588 conditions, 2482 events. 1354/2482 cut-off events. For 93413/93426 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15665 event pairs, 197 based on Foata normal form. 1/2397 useless extension candidates. Maximal degree in co-relation 20437. Up to 1657 conditions per place. [2024-06-27 22:21:31,308 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 295 selfloop transitions, 177 changer transitions 0/501 dead transitions. [2024-06-27 22:21:31,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 501 transitions, 10173 flow [2024-06-27 22:21:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:21:31,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:21:31,309 INFO L175 Difference]: Start difference. First operand has 322 places, 475 transitions, 9091 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:21:31,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 501 transitions, 10173 flow [2024-06-27 22:21:31,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 501 transitions, 9718 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:21:31,797 INFO L231 Difference]: Finished difference. Result has 322 places, 477 transitions, 9041 flow [2024-06-27 22:21:31,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8636, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9041, PETRI_PLACES=322, PETRI_TRANSITIONS=477} [2024-06-27 22:21:31,798 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 22:21:31,798 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 477 transitions, 9041 flow [2024-06-27 22:21:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:31,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:31,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:21:31,799 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:31,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash 43100404, now seen corresponding path program 6 times [2024-06-27 22:21:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830512672] [2024-06-27 22:21:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830512672] [2024-06-27 22:21:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830512672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:33,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:33,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054790171] [2024-06-27 22:21:33,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:33,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:33,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:33,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:33,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 477 transitions, 9041 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:33,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:33,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:33,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:34,074 INFO L124 PetriNetUnfolderBase]: 1439/2624 cut-off events. [2024-06-27 22:21:34,074 INFO L125 PetriNetUnfolderBase]: For 105636/105636 co-relation queries the response was YES. [2024-06-27 22:21:34,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22311 conditions, 2624 events. 1439/2624 cut-off events. For 105636/105636 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16519 event pairs, 362 based on Foata normal form. 3/2557 useless extension candidates. Maximal degree in co-relation 22158. Up to 2164 conditions per place. [2024-06-27 22:21:34,110 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 457 selfloop transitions, 47 changer transitions 0/511 dead transitions. [2024-06-27 22:21:34,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 511 transitions, 10279 flow [2024-06-27 22:21:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:21:34,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:21:34,111 INFO L175 Difference]: Start difference. First operand has 322 places, 477 transitions, 9041 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:21:34,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 511 transitions, 10279 flow [2024-06-27 22:21:34,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 511 transitions, 9836 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:34,615 INFO L231 Difference]: Finished difference. Result has 324 places, 481 transitions, 8765 flow [2024-06-27 22:21:34,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8598, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8765, PETRI_PLACES=324, PETRI_TRANSITIONS=481} [2024-06-27 22:21:34,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 22:21:34,616 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 481 transitions, 8765 flow [2024-06-27 22:21:34,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:34,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:34,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:34,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:21:34,617 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:34,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 158571312, now seen corresponding path program 2 times [2024-06-27 22:21:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:34,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408841798] [2024-06-27 22:21:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:34,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:36,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408841798] [2024-06-27 22:21:36,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408841798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:36,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788224843] [2024-06-27 22:21:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:36,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:36,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:36,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:36,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 481 transitions, 8765 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:36,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:36,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:36,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:37,124 INFO L124 PetriNetUnfolderBase]: 1489/2729 cut-off events. [2024-06-27 22:21:37,124 INFO L125 PetriNetUnfolderBase]: For 104644/104644 co-relation queries the response was YES. [2024-06-27 22:21:37,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22508 conditions, 2729 events. 1489/2729 cut-off events. For 104644/104644 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17427 event pairs, 381 based on Foata normal form. 2/2655 useless extension candidates. Maximal degree in co-relation 22356. Up to 2057 conditions per place. [2024-06-27 22:21:37,163 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 432 selfloop transitions, 86 changer transitions 0/525 dead transitions. [2024-06-27 22:21:37,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 525 transitions, 10289 flow [2024-06-27 22:21:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:21:37,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:21:37,164 INFO L175 Difference]: Start difference. First operand has 324 places, 481 transitions, 8765 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:21:37,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 525 transitions, 10289 flow [2024-06-27 22:21:37,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 525 transitions, 10194 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:37,704 INFO L231 Difference]: Finished difference. Result has 329 places, 493 transitions, 9042 flow [2024-06-27 22:21:37,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8670, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9042, PETRI_PLACES=329, PETRI_TRANSITIONS=493} [2024-06-27 22:21:37,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 22:21:37,705 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 493 transitions, 9042 flow [2024-06-27 22:21:37,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:37,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:37,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:37,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:21:37,705 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:37,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash 158391574, now seen corresponding path program 7 times [2024-06-27 22:21:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:37,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153794004] [2024-06-27 22:21:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:37,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:39,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153794004] [2024-06-27 22:21:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153794004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378704089] [2024-06-27 22:21:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:39,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:39,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:39,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 493 transitions, 9042 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:39,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:39,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:39,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:40,126 INFO L124 PetriNetUnfolderBase]: 1644/3018 cut-off events. [2024-06-27 22:21:40,126 INFO L125 PetriNetUnfolderBase]: For 128418/128418 co-relation queries the response was YES. [2024-06-27 22:21:40,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25297 conditions, 3018 events. 1644/3018 cut-off events. For 128418/128418 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19657 event pairs, 393 based on Foata normal form. 3/2933 useless extension candidates. Maximal degree in co-relation 25143. Up to 1810 conditions per place. [2024-06-27 22:21:40,159 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 461 selfloop transitions, 116 changer transitions 0/584 dead transitions. [2024-06-27 22:21:40,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 584 transitions, 11665 flow [2024-06-27 22:21:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:21:40,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 22:21:40,161 INFO L175 Difference]: Start difference. First operand has 329 places, 493 transitions, 9042 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:21:40,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 584 transitions, 11665 flow [2024-06-27 22:21:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 584 transitions, 11494 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:40,685 INFO L231 Difference]: Finished difference. Result has 336 places, 509 transitions, 9508 flow [2024-06-27 22:21:40,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8883, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9508, PETRI_PLACES=336, PETRI_TRANSITIONS=509} [2024-06-27 22:21:40,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-27 22:21:40,685 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 509 transitions, 9508 flow [2024-06-27 22:21:40,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:40,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:40,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:40,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:21:40,686 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:40,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 158564554, now seen corresponding path program 8 times [2024-06-27 22:21:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324010762] [2024-06-27 22:21:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:40,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:41,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:41,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324010762] [2024-06-27 22:21:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324010762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:41,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:41,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20652760] [2024-06-27 22:21:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:42,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:42,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 509 transitions, 9508 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:42,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:42,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:42,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:42,971 INFO L124 PetriNetUnfolderBase]: 1681/3088 cut-off events. [2024-06-27 22:21:42,971 INFO L125 PetriNetUnfolderBase]: For 134649/134649 co-relation queries the response was YES. [2024-06-27 22:21:43,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26347 conditions, 3088 events. 1681/3088 cut-off events. For 134649/134649 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 20178 event pairs, 388 based on Foata normal form. 3/3000 useless extension candidates. Maximal degree in co-relation 26190. Up to 1836 conditions per place. [2024-06-27 22:21:43,017 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 461 selfloop transitions, 125 changer transitions 0/593 dead transitions. [2024-06-27 22:21:43,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 593 transitions, 12059 flow [2024-06-27 22:21:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:21:43,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:21:43,020 INFO L175 Difference]: Start difference. First operand has 336 places, 509 transitions, 9508 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:21:43,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 593 transitions, 12059 flow [2024-06-27 22:21:43,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 593 transitions, 11879 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:43,747 INFO L231 Difference]: Finished difference. Result has 341 places, 513 transitions, 9703 flow [2024-06-27 22:21:43,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9703, PETRI_PLACES=341, PETRI_TRANSITIONS=513} [2024-06-27 22:21:43,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 22:21:43,747 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 513 transitions, 9703 flow [2024-06-27 22:21:43,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:43,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:43,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:43,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:21:43,748 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:43,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash 158571064, now seen corresponding path program 9 times [2024-06-27 22:21:43,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:43,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229990058] [2024-06-27 22:21:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:44,988 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 22:21:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229990058] [2024-06-27 22:21:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229990058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:44,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:44,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:44,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748400831] [2024-06-27 22:21:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:44,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:45,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:45,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 513 transitions, 9703 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:45,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:45,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:45,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:46,118 INFO L124 PetriNetUnfolderBase]: 1675/3079 cut-off events. [2024-06-27 22:21:46,118 INFO L125 PetriNetUnfolderBase]: For 129690/129690 co-relation queries the response was YES. [2024-06-27 22:21:46,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26152 conditions, 3079 events. 1675/3079 cut-off events. For 129690/129690 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20130 event pairs, 390 based on Foata normal form. 3/2991 useless extension candidates. Maximal degree in co-relation 25993. Up to 1832 conditions per place. [2024-06-27 22:21:46,158 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 441 selfloop transitions, 134 changer transitions 0/582 dead transitions. [2024-06-27 22:21:46,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 582 transitions, 11807 flow [2024-06-27 22:21:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:21:46,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:21:46,160 INFO L175 Difference]: Start difference. First operand has 341 places, 513 transitions, 9703 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:21:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 582 transitions, 11807 flow [2024-06-27 22:21:46,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 582 transitions, 11452 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 22:21:46,711 INFO L231 Difference]: Finished difference. Result has 342 places, 513 transitions, 9631 flow [2024-06-27 22:21:46,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9631, PETRI_PLACES=342, PETRI_TRANSITIONS=513} [2024-06-27 22:21:46,712 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-27 22:21:46,712 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 513 transitions, 9631 flow [2024-06-27 22:21:46,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:46,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:46,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:46,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:21:46,713 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:46,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:46,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1318496744, now seen corresponding path program 10 times [2024-06-27 22:21:46,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:46,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568976815] [2024-06-27 22:21:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568976815] [2024-06-27 22:21:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568976815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:47,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510787588] [2024-06-27 22:21:47,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:47,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:47,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:47,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 513 transitions, 9631 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:47,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:47,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:47,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:49,004 INFO L124 PetriNetUnfolderBase]: 1798/3306 cut-off events. [2024-06-27 22:21:49,004 INFO L125 PetriNetUnfolderBase]: For 148108/148108 co-relation queries the response was YES. [2024-06-27 22:21:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28279 conditions, 3306 events. 1798/3306 cut-off events. For 148108/148108 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21892 event pairs, 407 based on Foata normal form. 3/3209 useless extension candidates. Maximal degree in co-relation 28120. Up to 2350 conditions per place. [2024-06-27 22:21:49,054 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 531 selfloop transitions, 68 changer transitions 0/606 dead transitions. [2024-06-27 22:21:49,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 606 transitions, 12746 flow [2024-06-27 22:21:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:21:49,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:21:49,055 INFO L175 Difference]: Start difference. First operand has 342 places, 513 transitions, 9631 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:21:49,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 606 transitions, 12746 flow [2024-06-27 22:21:49,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 606 transitions, 12500 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:49,794 INFO L231 Difference]: Finished difference. Result has 346 places, 528 transitions, 9957 flow [2024-06-27 22:21:49,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9409, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9957, PETRI_PLACES=346, PETRI_TRANSITIONS=528} [2024-06-27 22:21:49,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-27 22:21:49,795 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 528 transitions, 9957 flow [2024-06-27 22:21:49,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:49,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:49,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:49,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:21:49,796 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:49,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash 297444432, now seen corresponding path program 8 times [2024-06-27 22:21:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535655219] [2024-06-27 22:21:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:49,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:51,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:51,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535655219] [2024-06-27 22:21:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535655219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:51,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:51,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:51,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467264693] [2024-06-27 22:21:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:51,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:51,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 528 transitions, 9957 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:51,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:51,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:51,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:52,296 INFO L124 PetriNetUnfolderBase]: 1818/3342 cut-off events. [2024-06-27 22:21:52,296 INFO L125 PetriNetUnfolderBase]: For 146218/146218 co-relation queries the response was YES. [2024-06-27 22:21:52,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28494 conditions, 3342 events. 1818/3342 cut-off events. For 146218/146218 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22201 event pairs, 403 based on Foata normal form. 1/3242 useless extension candidates. Maximal degree in co-relation 28333. Up to 2719 conditions per place. [2024-06-27 22:21:52,347 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 502 selfloop transitions, 62 changer transitions 0/571 dead transitions. [2024-06-27 22:21:52,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 571 transitions, 11631 flow [2024-06-27 22:21:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:21:52,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:21:52,349 INFO L175 Difference]: Start difference. First operand has 346 places, 528 transitions, 9957 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:21:52,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 571 transitions, 11631 flow [2024-06-27 22:21:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 571 transitions, 11377 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:53,153 INFO L231 Difference]: Finished difference. Result has 349 places, 535 transitions, 9996 flow [2024-06-27 22:21:53,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9703, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9996, PETRI_PLACES=349, PETRI_TRANSITIONS=535} [2024-06-27 22:21:53,153 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-27 22:21:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 535 transitions, 9996 flow [2024-06-27 22:21:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:53,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:53,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:21:53,154 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 592235030, now seen corresponding path program 3 times [2024-06-27 22:21:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906897718] [2024-06-27 22:21:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906897718] [2024-06-27 22:21:54,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906897718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:54,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:54,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603930953] [2024-06-27 22:21:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:54,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:21:54,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 535 transitions, 9996 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:54,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:54,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:21:54,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:55,816 INFO L124 PetriNetUnfolderBase]: 1820/3339 cut-off events. [2024-06-27 22:21:55,816 INFO L125 PetriNetUnfolderBase]: For 143078/143078 co-relation queries the response was YES. [2024-06-27 22:21:55,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28080 conditions, 3339 events. 1820/3339 cut-off events. For 143078/143078 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22184 event pairs, 414 based on Foata normal form. 2/3242 useless extension candidates. Maximal degree in co-relation 27918. Up to 2761 conditions per place. [2024-06-27 22:21:55,858 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 502 selfloop transitions, 61 changer transitions 0/570 dead transitions. [2024-06-27 22:21:55,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 570 transitions, 11631 flow [2024-06-27 22:21:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:21:55,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:21:55,859 INFO L175 Difference]: Start difference. First operand has 349 places, 535 transitions, 9996 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:21:55,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 570 transitions, 11631 flow [2024-06-27 22:21:56,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 570 transitions, 11417 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:56,551 INFO L231 Difference]: Finished difference. Result has 354 places, 542 transitions, 10086 flow [2024-06-27 22:21:56,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9782, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10086, PETRI_PLACES=354, PETRI_TRANSITIONS=542} [2024-06-27 22:21:56,552 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 22:21:56,552 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 542 transitions, 10086 flow [2024-06-27 22:21:56,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:56,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:56,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:56,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:21:56,552 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:56,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash 297266678, now seen corresponding path program 6 times [2024-06-27 22:21:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913835694] [2024-06-27 22:21:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:58,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913835694] [2024-06-27 22:21:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913835694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:58,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:58,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908519108] [2024-06-27 22:21:58,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:58,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:58,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:58,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:58,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:58,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 542 transitions, 10086 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:58,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:58,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:58,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:59,493 INFO L124 PetriNetUnfolderBase]: 1726/3245 cut-off events. [2024-06-27 22:21:59,493 INFO L125 PetriNetUnfolderBase]: For 139925/139925 co-relation queries the response was YES. [2024-06-27 22:21:59,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27345 conditions, 3245 events. 1726/3245 cut-off events. For 139925/139925 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21950 event pairs, 358 based on Foata normal form. 2/3148 useless extension candidates. Maximal degree in co-relation 27182. Up to 2535 conditions per place. [2024-06-27 22:21:59,546 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 467 selfloop transitions, 31 changer transitions 0/572 dead transitions. [2024-06-27 22:21:59,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 572 transitions, 11373 flow [2024-06-27 22:21:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:21:59,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:21:59,547 INFO L175 Difference]: Start difference. First operand has 354 places, 542 transitions, 10086 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:21:59,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 572 transitions, 11373 flow [2024-06-27 22:22:00,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 572 transitions, 11252 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:00,237 INFO L231 Difference]: Finished difference. Result has 357 places, 543 transitions, 10055 flow [2024-06-27 22:22:00,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9965, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10055, PETRI_PLACES=357, PETRI_TRANSITIONS=543} [2024-06-27 22:22:00,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-27 22:22:00,237 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 543 transitions, 10055 flow [2024-06-27 22:22:00,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:00,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:00,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:00,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:22:00,238 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:00,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash -304387380, now seen corresponding path program 11 times [2024-06-27 22:22:00,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533974054] [2024-06-27 22:22:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:01,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:01,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533974054] [2024-06-27 22:22:01,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533974054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:01,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:01,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:01,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226582016] [2024-06-27 22:22:01,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:01,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:01,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:01,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:01,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 543 transitions, 10055 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:01,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:01,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:01,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:02,610 INFO L124 PetriNetUnfolderBase]: 1841/3380 cut-off events. [2024-06-27 22:22:02,611 INFO L125 PetriNetUnfolderBase]: For 144172/144172 co-relation queries the response was YES. [2024-06-27 22:22:02,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28279 conditions, 3380 events. 1841/3380 cut-off events. For 144172/144172 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22513 event pairs, 416 based on Foata normal form. 3/3282 useless extension candidates. Maximal degree in co-relation 28115. Up to 2349 conditions per place. [2024-06-27 22:22:02,662 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 496 selfloop transitions, 95 changer transitions 0/598 dead transitions. [2024-06-27 22:22:02,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 598 transitions, 12219 flow [2024-06-27 22:22:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:22:02,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:22:02,664 INFO L175 Difference]: Start difference. First operand has 357 places, 543 transitions, 10055 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:22:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 598 transitions, 12219 flow [2024-06-27 22:22:03,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 598 transitions, 12123 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:03,465 INFO L231 Difference]: Finished difference. Result has 360 places, 545 transitions, 10258 flow [2024-06-27 22:22:03,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9959, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10258, PETRI_PLACES=360, PETRI_TRANSITIONS=545} [2024-06-27 22:22:03,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-27 22:22:03,466 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 545 transitions, 10258 flow [2024-06-27 22:22:03,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:03,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:03,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:22:03,466 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:03,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash 297451128, now seen corresponding path program 12 times [2024-06-27 22:22:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:03,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142961205] [2024-06-27 22:22:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:04,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142961205] [2024-06-27 22:22:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142961205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:04,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966310230] [2024-06-27 22:22:04,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:04,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:04,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 545 transitions, 10258 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:04,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:04,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:04,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:05,840 INFO L124 PetriNetUnfolderBase]: 1835/3375 cut-off events. [2024-06-27 22:22:05,840 INFO L125 PetriNetUnfolderBase]: For 142433/142433 co-relation queries the response was YES. [2024-06-27 22:22:05,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28423 conditions, 3375 events. 1835/3375 cut-off events. For 142433/142433 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22557 event pairs, 414 based on Foata normal form. 3/3276 useless extension candidates. Maximal degree in co-relation 28257. Up to 2418 conditions per place. [2024-06-27 22:22:05,897 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 529 selfloop transitions, 73 changer transitions 0/609 dead transitions. [2024-06-27 22:22:05,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 609 transitions, 12528 flow [2024-06-27 22:22:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:22:05,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:22:05,898 INFO L175 Difference]: Start difference. First operand has 360 places, 545 transitions, 10258 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:22:05,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 609 transitions, 12528 flow [2024-06-27 22:22:06,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 609 transitions, 12365 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 22:22:06,729 INFO L231 Difference]: Finished difference. Result has 364 places, 545 transitions, 10253 flow [2024-06-27 22:22:06,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10095, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10253, PETRI_PLACES=364, PETRI_TRANSITIONS=545} [2024-06-27 22:22:06,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 22:22:06,730 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 545 transitions, 10253 flow [2024-06-27 22:22:06,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:06,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:06,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:22:06,730 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:06,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -139127970, now seen corresponding path program 9 times [2024-06-27 22:22:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955735274] [2024-06-27 22:22:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:08,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955735274] [2024-06-27 22:22:08,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955735274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:08,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:08,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986897341] [2024-06-27 22:22:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:08,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:08,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:08,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 545 transitions, 10253 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:08,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:08,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:08,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:09,322 INFO L124 PetriNetUnfolderBase]: 1846/3393 cut-off events. [2024-06-27 22:22:09,322 INFO L125 PetriNetUnfolderBase]: For 140871/140871 co-relation queries the response was YES. [2024-06-27 22:22:09,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28561 conditions, 3393 events. 1846/3393 cut-off events. For 140871/140871 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22651 event pairs, 403 based on Foata normal form. 1/3292 useless extension candidates. Maximal degree in co-relation 28394. Up to 2798 conditions per place. [2024-06-27 22:22:09,373 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 507 selfloop transitions, 67 changer transitions 0/581 dead transitions. [2024-06-27 22:22:09,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 581 transitions, 11802 flow [2024-06-27 22:22:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:22:09,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 22:22:09,375 INFO L175 Difference]: Start difference. First operand has 364 places, 545 transitions, 10253 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:22:09,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 581 transitions, 11802 flow [2024-06-27 22:22:10,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 581 transitions, 11689 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:10,168 INFO L231 Difference]: Finished difference. Result has 367 places, 552 transitions, 10442 flow [2024-06-27 22:22:10,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10140, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10442, PETRI_PLACES=367, PETRI_TRANSITIONS=552} [2024-06-27 22:22:10,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-27 22:22:10,168 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 552 transitions, 10442 flow [2024-06-27 22:22:10,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:10,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:10,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:22:10,169 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 592050456, now seen corresponding path program 10 times [2024-06-27 22:22:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961399136] [2024-06-27 22:22:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:11,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:11,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961399136] [2024-06-27 22:22:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961399136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:11,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:11,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:11,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568761242] [2024-06-27 22:22:11,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:11,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:11,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:11,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:11,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 552 transitions, 10442 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:11,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:11,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:12,941 INFO L124 PetriNetUnfolderBase]: 1863/3420 cut-off events. [2024-06-27 22:22:12,942 INFO L125 PetriNetUnfolderBase]: For 144686/144686 co-relation queries the response was YES. [2024-06-27 22:22:12,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28891 conditions, 3420 events. 1863/3420 cut-off events. For 144686/144686 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 22857 event pairs, 406 based on Foata normal form. 1/3319 useless extension candidates. Maximal degree in co-relation 28722. Up to 2774 conditions per place. [2024-06-27 22:22:12,995 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 510 selfloop transitions, 72 changer transitions 0/589 dead transitions. [2024-06-27 22:22:12,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 589 transitions, 12156 flow [2024-06-27 22:22:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:22:12,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:22:12,997 INFO L175 Difference]: Start difference. First operand has 367 places, 552 transitions, 10442 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:22:12,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 589 transitions, 12156 flow [2024-06-27 22:22:13,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 589 transitions, 11950 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-27 22:22:13,875 INFO L231 Difference]: Finished difference. Result has 374 places, 558 transitions, 10517 flow [2024-06-27 22:22:13,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10236, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10517, PETRI_PLACES=374, PETRI_TRANSITIONS=558} [2024-06-27 22:22:13,876 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-27 22:22:13,876 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 558 transitions, 10517 flow [2024-06-27 22:22:13,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:13,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:13,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:13,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:22:13,877 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:13,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:13,877 INFO L85 PathProgramCache]: Analyzing trace with hash 562226096, now seen corresponding path program 4 times [2024-06-27 22:22:13,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:13,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347815837] [2024-06-27 22:22:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:13,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:15,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:15,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347815837] [2024-06-27 22:22:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347815837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:15,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746801360] [2024-06-27 22:22:15,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:15,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:15,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:15,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:15,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 558 transitions, 10517 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:15,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:15,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:15,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:16,317 INFO L124 PetriNetUnfolderBase]: 1865/3428 cut-off events. [2024-06-27 22:22:16,318 INFO L125 PetriNetUnfolderBase]: For 145593/145593 co-relation queries the response was YES. [2024-06-27 22:22:16,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28814 conditions, 3428 events. 1865/3428 cut-off events. For 145593/145593 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22999 event pairs, 421 based on Foata normal form. 2/3327 useless extension candidates. Maximal degree in co-relation 28643. Up to 2880 conditions per place. [2024-06-27 22:22:16,368 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 544 selfloop transitions, 35 changer transitions 0/586 dead transitions. [2024-06-27 22:22:16,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 586 transitions, 12080 flow [2024-06-27 22:22:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:22:16,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:22:16,369 INFO L175 Difference]: Start difference. First operand has 374 places, 558 transitions, 10517 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:22:16,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 586 transitions, 12080 flow [2024-06-27 22:22:17,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 586 transitions, 11919 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 22:22:17,236 INFO L231 Difference]: Finished difference. Result has 378 places, 560 transitions, 10472 flow [2024-06-27 22:22:17,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10358, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10472, PETRI_PLACES=378, PETRI_TRANSITIONS=560} [2024-06-27 22:22:17,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 22:22:17,237 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 560 transitions, 10472 flow [2024-06-27 22:22:17,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:17,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:17,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:17,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:22:17,237 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:17,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash 857009502, now seen corresponding path program 13 times [2024-06-27 22:22:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:17,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760991941] [2024-06-27 22:22:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:18,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760991941] [2024-06-27 22:22:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760991941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:18,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306029101] [2024-06-27 22:22:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:18,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:18,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:18,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:18,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 560 transitions, 10472 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:18,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:18,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:18,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:19,803 INFO L124 PetriNetUnfolderBase]: 1902/3498 cut-off events. [2024-06-27 22:22:19,804 INFO L125 PetriNetUnfolderBase]: For 150493/150493 co-relation queries the response was YES. [2024-06-27 22:22:19,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29258 conditions, 3498 events. 1902/3498 cut-off events. For 150493/150493 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 23545 event pairs, 428 based on Foata normal form. 3/3395 useless extension candidates. Maximal degree in co-relation 29085. Up to 2885 conditions per place. [2024-06-27 22:22:19,857 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 562 selfloop transitions, 30 changer transitions 0/599 dead transitions. [2024-06-27 22:22:19,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 599 transitions, 12168 flow [2024-06-27 22:22:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 22:22:19,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 22:22:19,858 INFO L175 Difference]: Start difference. First operand has 378 places, 560 transitions, 10472 flow. Second operand 9 states and 152 transitions. [2024-06-27 22:22:19,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 599 transitions, 12168 flow [2024-06-27 22:22:20,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 599 transitions, 12040 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:20,658 INFO L231 Difference]: Finished difference. Result has 380 places, 564 transitions, 10530 flow [2024-06-27 22:22:20,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10344, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10530, PETRI_PLACES=380, PETRI_TRANSITIONS=564} [2024-06-27 22:22:20,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-27 22:22:20,659 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 564 transitions, 10530 flow [2024-06-27 22:22:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:20,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:20,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:20,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:22:20,660 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 562551596, now seen corresponding path program 5 times [2024-06-27 22:22:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069231552] [2024-06-27 22:22:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:20,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:21,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069231552] [2024-06-27 22:22:21,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069231552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:21,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:21,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857885434] [2024-06-27 22:22:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:21,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:21,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:21,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:21,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:21,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 564 transitions, 10530 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:21,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:21,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:23,046 INFO L124 PetriNetUnfolderBase]: 1899/3502 cut-off events. [2024-06-27 22:22:23,046 INFO L125 PetriNetUnfolderBase]: For 145730/145730 co-relation queries the response was YES. [2024-06-27 22:22:23,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29077 conditions, 3502 events. 1899/3502 cut-off events. For 145730/145730 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 23643 event pairs, 427 based on Foata normal form. 3/3397 useless extension candidates. Maximal degree in co-relation 28903. Up to 2936 conditions per place. [2024-06-27 22:22:23,099 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 557 selfloop transitions, 31 changer transitions 0/595 dead transitions. [2024-06-27 22:22:23,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 595 transitions, 12090 flow [2024-06-27 22:22:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:22:23,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:22:23,101 INFO L175 Difference]: Start difference. First operand has 380 places, 564 transitions, 10530 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:22:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 595 transitions, 12090 flow [2024-06-27 22:22:23,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 595 transitions, 11962 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:23,887 INFO L231 Difference]: Finished difference. Result has 383 places, 569 transitions, 10588 flow [2024-06-27 22:22:23,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10408, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10588, PETRI_PLACES=383, PETRI_TRANSITIONS=569} [2024-06-27 22:22:23,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 22:22:23,888 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 569 transitions, 10588 flow [2024-06-27 22:22:23,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:23,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:23,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:22:23,889 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:23,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash 553051398, now seen corresponding path program 14 times [2024-06-27 22:22:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459941850] [2024-06-27 22:22:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:25,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:25,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459941850] [2024-06-27 22:22:25,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459941850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:25,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:25,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:25,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647455771] [2024-06-27 22:22:25,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:25,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:25,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:25,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 569 transitions, 10588 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:25,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:25,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:25,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:26,242 INFO L124 PetriNetUnfolderBase]: 1936/3571 cut-off events. [2024-06-27 22:22:26,242 INFO L125 PetriNetUnfolderBase]: For 150145/150145 co-relation queries the response was YES. [2024-06-27 22:22:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29722 conditions, 3571 events. 1936/3571 cut-off events. For 150145/150145 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 24202 event pairs, 419 based on Foata normal form. 3/3463 useless extension candidates. Maximal degree in co-relation 29547. Up to 2768 conditions per place. [2024-06-27 22:22:26,297 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 561 selfloop transitions, 54 changer transitions 0/622 dead transitions. [2024-06-27 22:22:26,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 622 transitions, 12692 flow [2024-06-27 22:22:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:22:26,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:22:26,298 INFO L175 Difference]: Start difference. First operand has 383 places, 569 transitions, 10588 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:22:26,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 622 transitions, 12692 flow [2024-06-27 22:22:27,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 622 transitions, 12422 flow, removed 54 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:27,084 INFO L231 Difference]: Finished difference. Result has 383 places, 573 transitions, 10549 flow [2024-06-27 22:22:27,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10322, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10549, PETRI_PLACES=383, PETRI_TRANSITIONS=573} [2024-06-27 22:22:27,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 22:22:27,085 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 573 transitions, 10549 flow [2024-06-27 22:22:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:27,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:27,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:27,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:22:27,086 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:27,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash 553051212, now seen corresponding path program 11 times [2024-06-27 22:22:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:27,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472226830] [2024-06-27 22:22:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472226830] [2024-06-27 22:22:28,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472226830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:28,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:28,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:28,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240225724] [2024-06-27 22:22:28,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:28,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:28,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:28,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:28,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:28,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:28,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 573 transitions, 10549 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:28,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:28,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:28,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:29,807 INFO L124 PetriNetUnfolderBase]: 1937/3570 cut-off events. [2024-06-27 22:22:29,807 INFO L125 PetriNetUnfolderBase]: For 145249/145249 co-relation queries the response was YES. [2024-06-27 22:22:29,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29261 conditions, 3570 events. 1937/3570 cut-off events. For 145249/145249 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 24209 event pairs, 427 based on Foata normal form. 1/3461 useless extension candidates. Maximal degree in co-relation 29088. Up to 3022 conditions per place. [2024-06-27 22:22:29,864 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 565 selfloop transitions, 27 changer transitions 0/599 dead transitions. [2024-06-27 22:22:29,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 599 transitions, 12015 flow [2024-06-27 22:22:29,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:22:29,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 22:22:29,865 INFO L175 Difference]: Start difference. First operand has 383 places, 573 transitions, 10549 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:22:29,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 599 transitions, 12015 flow [2024-06-27 22:22:30,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 599 transitions, 11786 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:30,776 INFO L231 Difference]: Finished difference. Result has 385 places, 577 transitions, 10457 flow [2024-06-27 22:22:30,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10332, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10457, PETRI_PLACES=385, PETRI_TRANSITIONS=577} [2024-06-27 22:22:30,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 22:22:30,777 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 577 transitions, 10457 flow [2024-06-27 22:22:30,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:30,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:30,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:30,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:22:30,777 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:30,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash 553057908, now seen corresponding path program 15 times [2024-06-27 22:22:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450033676] [2024-06-27 22:22:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:30,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:31,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:31,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450033676] [2024-06-27 22:22:31,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450033676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:31,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:31,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597473949] [2024-06-27 22:22:31,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:32,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:32,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 577 transitions, 10457 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:32,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:32,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:32,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:33,232 INFO L124 PetriNetUnfolderBase]: 1931/3561 cut-off events. [2024-06-27 22:22:33,232 INFO L125 PetriNetUnfolderBase]: For 138813/138813 co-relation queries the response was YES. [2024-06-27 22:22:33,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28637 conditions, 3561 events. 1931/3561 cut-off events. For 138813/138813 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 24097 event pairs, 427 based on Foata normal form. 3/3454 useless extension candidates. Maximal degree in co-relation 28462. Up to 2766 conditions per place. [2024-06-27 22:22:33,292 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 579 selfloop transitions, 48 changer transitions 0/634 dead transitions. [2024-06-27 22:22:33,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 634 transitions, 12526 flow [2024-06-27 22:22:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:22:33,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:22:33,294 INFO L175 Difference]: Start difference. First operand has 385 places, 577 transitions, 10457 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:22:33,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 634 transitions, 12526 flow [2024-06-27 22:22:34,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 634 transitions, 12396 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:34,180 INFO L231 Difference]: Finished difference. Result has 388 places, 577 transitions, 10452 flow [2024-06-27 22:22:34,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10345, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10452, PETRI_PLACES=388, PETRI_TRANSITIONS=577} [2024-06-27 22:22:34,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-27 22:22:34,181 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 577 transitions, 10452 flow [2024-06-27 22:22:34,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:34,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:34,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:34,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:22:34,181 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:34,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash 562563469, now seen corresponding path program 1 times [2024-06-27 22:22:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971234580] [2024-06-27 22:22:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:36,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:36,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971234580] [2024-06-27 22:22:36,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971234580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:36,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:36,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978478532] [2024-06-27 22:22:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:36,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:36,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:36,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:22:36,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 577 transitions, 10452 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:36,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:36,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:22:36,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:38,143 INFO L124 PetriNetUnfolderBase]: 1928/3558 cut-off events. [2024-06-27 22:22:38,144 INFO L125 PetriNetUnfolderBase]: For 132610/132610 co-relation queries the response was YES. [2024-06-27 22:22:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28401 conditions, 3558 events. 1928/3558 cut-off events. For 132610/132610 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 24082 event pairs, 413 based on Foata normal form. 2/3449 useless extension candidates. Maximal degree in co-relation 28225. Up to 2972 conditions per place. [2024-06-27 22:22:38,200 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 575 selfloop transitions, 26 changer transitions 0/608 dead transitions. [2024-06-27 22:22:38,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 608 transitions, 11930 flow [2024-06-27 22:22:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:22:38,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:22:38,201 INFO L175 Difference]: Start difference. First operand has 388 places, 577 transitions, 10452 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:22:38,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 608 transitions, 11930 flow [2024-06-27 22:22:38,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 608 transitions, 11797 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:38,973 INFO L231 Difference]: Finished difference. Result has 390 places, 579 transitions, 10408 flow [2024-06-27 22:22:38,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10319, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10408, PETRI_PLACES=390, PETRI_TRANSITIONS=579} [2024-06-27 22:22:38,973 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 22:22:38,973 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 579 transitions, 10408 flow [2024-06-27 22:22:38,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:38,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:38,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:22:38,974 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:38,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1286166379, now seen corresponding path program 1 times [2024-06-27 22:22:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:38,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149923699] [2024-06-27 22:22:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:39,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:39,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149923699] [2024-06-27 22:22:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149923699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:39,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:22:39,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791006398] [2024-06-27 22:22:39,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:39,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:22:39,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:39,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:22:39,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:22:39,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 22:22:39,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 579 transitions, 10408 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:39,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:39,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 22:22:39,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:39,744 INFO L124 PetriNetUnfolderBase]: 946/1806 cut-off events. [2024-06-27 22:22:39,745 INFO L125 PetriNetUnfolderBase]: For 66170/66285 co-relation queries the response was YES. [2024-06-27 22:22:39,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14721 conditions, 1806 events. 946/1806 cut-off events. For 66170/66285 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11020 event pairs, 159 based on Foata normal form. 143/1714 useless extension candidates. Maximal degree in co-relation 14544. Up to 683 conditions per place. [2024-06-27 22:22:39,783 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 155 selfloop transitions, 52 changer transitions 0/379 dead transitions. [2024-06-27 22:22:39,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 379 transitions, 7529 flow [2024-06-27 22:22:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:22:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:22:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 22:22:39,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 22:22:39,785 INFO L175 Difference]: Start difference. First operand has 390 places, 579 transitions, 10408 flow. Second operand 4 states and 103 transitions. [2024-06-27 22:22:39,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 379 transitions, 7529 flow [2024-06-27 22:22:40,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 379 transitions, 5202 flow, removed 266 selfloop flow, removed 110 redundant places. [2024-06-27 22:22:40,236 INFO L231 Difference]: Finished difference. Result has 285 places, 365 transitions, 4880 flow [2024-06-27 22:22:40,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4880, PETRI_PLACES=285, PETRI_TRANSITIONS=365} [2024-06-27 22:22:40,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 22:22:40,236 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 365 transitions, 4880 flow [2024-06-27 22:22:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:40,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:40,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:22:40,237 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:40,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1456432064, now seen corresponding path program 1 times [2024-06-27 22:22:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:40,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502304175] [2024-06-27 22:22:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502304175] [2024-06-27 22:22:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502304175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742963467] [2024-06-27 22:22:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:42,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:42,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:42,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 365 transitions, 4880 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:42,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:42,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:42,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:42,707 INFO L124 PetriNetUnfolderBase]: 947/1810 cut-off events. [2024-06-27 22:22:42,707 INFO L125 PetriNetUnfolderBase]: For 91970/92017 co-relation queries the response was YES. [2024-06-27 22:22:42,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13229 conditions, 1810 events. 947/1810 cut-off events. For 91970/92017 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10815 event pairs, 194 based on Foata normal form. 8/1744 useless extension candidates. Maximal degree in co-relation 13095. Up to 1371 conditions per place. [2024-06-27 22:22:42,730 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 275 selfloop transitions, 81 changer transitions 0/386 dead transitions. [2024-06-27 22:22:42,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 386 transitions, 5852 flow [2024-06-27 22:22:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:22:42,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:22:42,731 INFO L175 Difference]: Start difference. First operand has 285 places, 365 transitions, 4880 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:22:42,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 386 transitions, 5852 flow [2024-06-27 22:22:43,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 386 transitions, 5824 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:22:43,174 INFO L231 Difference]: Finished difference. Result has 291 places, 369 transitions, 5093 flow [2024-06-27 22:22:43,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5093, PETRI_PLACES=291, PETRI_TRANSITIONS=369} [2024-06-27 22:22:43,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 22:22:43,175 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 369 transitions, 5093 flow [2024-06-27 22:22:43,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:43,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:43,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:43,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:22:43,175 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:43,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash -894873959, now seen corresponding path program 1 times [2024-06-27 22:22:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:43,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315494273] [2024-06-27 22:22:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:44,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:44,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315494273] [2024-06-27 22:22:44,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315494273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:44,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:44,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:22:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611053838] [2024-06-27 22:22:44,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:44,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:22:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:22:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:22:44,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:44,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 369 transitions, 5093 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 22:22:44,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:44,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:44,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:45,560 INFO L124 PetriNetUnfolderBase]: 1062/2032 cut-off events. [2024-06-27 22:22:45,560 INFO L125 PetriNetUnfolderBase]: For 109979/109980 co-relation queries the response was YES. [2024-06-27 22:22:45,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15159 conditions, 2032 events. 1062/2032 cut-off events. For 109979/109980 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12118 event pairs, 110 based on Foata normal form. 3/1960 useless extension candidates. Maximal degree in co-relation 15022. Up to 1168 conditions per place. [2024-06-27 22:22:45,587 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 268 selfloop transitions, 79 changer transitions 0/409 dead transitions. [2024-06-27 22:22:45,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 409 transitions, 6353 flow [2024-06-27 22:22:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:22:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 22:22:45,588 INFO L175 Difference]: Start difference. First operand has 291 places, 369 transitions, 5093 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:22:45,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 409 transitions, 6353 flow [2024-06-27 22:22:46,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 409 transitions, 6234 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:46,052 INFO L231 Difference]: Finished difference. Result has 297 places, 375 transitions, 5353 flow [2024-06-27 22:22:46,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4974, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5353, PETRI_PLACES=297, PETRI_TRANSITIONS=375} [2024-06-27 22:22:46,052 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 22:22:46,052 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 375 transitions, 5353 flow [2024-06-27 22:22:46,053 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 22:22:46,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:46,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:46,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:22:46,053 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:46,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 900251293, now seen corresponding path program 2 times [2024-06-27 22:22:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:46,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189329915] [2024-06-27 22:22:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:46,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:47,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:47,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189329915] [2024-06-27 22:22:47,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189329915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434119819] [2024-06-27 22:22:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:47,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:47,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 375 transitions, 5353 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:47,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:47,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:47,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:48,641 INFO L124 PetriNetUnfolderBase]: 1016/1994 cut-off events. [2024-06-27 22:22:48,641 INFO L125 PetriNetUnfolderBase]: For 112457/112513 co-relation queries the response was YES. [2024-06-27 22:22:48,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15080 conditions, 1994 events. 1016/1994 cut-off events. For 112457/112513 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12308 event pairs, 132 based on Foata normal form. 8/1904 useless extension candidates. Maximal degree in co-relation 14939. Up to 1210 conditions per place. [2024-06-27 22:22:48,667 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 299 selfloop transitions, 81 changer transitions 0/411 dead transitions. [2024-06-27 22:22:48,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 411 transitions, 6581 flow [2024-06-27 22:22:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:22:48,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:22:48,669 INFO L175 Difference]: Start difference. First operand has 297 places, 375 transitions, 5353 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:22:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 411 transitions, 6581 flow [2024-06-27 22:22:49,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 411 transitions, 6374 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:49,158 INFO L231 Difference]: Finished difference. Result has 301 places, 378 transitions, 5426 flow [2024-06-27 22:22:49,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5207, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5426, PETRI_PLACES=301, PETRI_TRANSITIONS=378} [2024-06-27 22:22:49,159 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-27 22:22:49,159 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 378 transitions, 5426 flow [2024-06-27 22:22:49,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:49,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:49,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:22:49,159 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:49,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 902128963, now seen corresponding path program 3 times [2024-06-27 22:22:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170499499] [2024-06-27 22:22:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170499499] [2024-06-27 22:22:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170499499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:50,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:50,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:50,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476083187] [2024-06-27 22:22:50,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:50,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:50,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:51,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:51,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 378 transitions, 5426 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:51,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:51,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:51,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:51,656 INFO L124 PetriNetUnfolderBase]: 1052/2032 cut-off events. [2024-06-27 22:22:51,656 INFO L125 PetriNetUnfolderBase]: For 112041/112097 co-relation queries the response was YES. [2024-06-27 22:22:51,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15527 conditions, 2032 events. 1052/2032 cut-off events. For 112041/112097 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12700 event pairs, 231 based on Foata normal form. 10/1955 useless extension candidates. Maximal degree in co-relation 15385. Up to 1559 conditions per place. [2024-06-27 22:22:51,684 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 294 selfloop transitions, 78 changer transitions 0/403 dead transitions. [2024-06-27 22:22:51,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 403 transitions, 6327 flow [2024-06-27 22:22:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:22:51,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:22:51,685 INFO L175 Difference]: Start difference. First operand has 301 places, 378 transitions, 5426 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:22:51,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 403 transitions, 6327 flow [2024-06-27 22:22:52,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 403 transitions, 6121 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:52,215 INFO L231 Difference]: Finished difference. Result has 304 places, 381 transitions, 5447 flow [2024-06-27 22:22:52,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5243, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5447, PETRI_PLACES=304, PETRI_TRANSITIONS=381} [2024-06-27 22:22:52,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:22:52,216 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 381 transitions, 5447 flow [2024-06-27 22:22:52,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:52,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:52,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:52,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:22:52,216 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:52,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:52,216 INFO L85 PathProgramCache]: Analyzing trace with hash -675838149, now seen corresponding path program 4 times [2024-06-27 22:22:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:52,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203026252] [2024-06-27 22:22:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:52,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:54,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:54,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203026252] [2024-06-27 22:22:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203026252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:54,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:54,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:54,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569181665] [2024-06-27 22:22:54,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:54,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:54,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:54,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:54,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 381 transitions, 5447 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:54,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:54,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:54,831 INFO L124 PetriNetUnfolderBase]: 1073/2080 cut-off events. [2024-06-27 22:22:54,831 INFO L125 PetriNetUnfolderBase]: For 113036/113087 co-relation queries the response was YES. [2024-06-27 22:22:54,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15505 conditions, 2080 events. 1073/2080 cut-off events. For 113036/113087 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13070 event pairs, 215 based on Foata normal form. 9/1998 useless extension candidates. Maximal degree in co-relation 15362. Up to 1498 conditions per place. [2024-06-27 22:22:54,856 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 301 selfloop transitions, 81 changer transitions 0/413 dead transitions. [2024-06-27 22:22:54,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 413 transitions, 6427 flow [2024-06-27 22:22:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:22:54,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:22:54,857 INFO L175 Difference]: Start difference. First operand has 304 places, 381 transitions, 5447 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:22:54,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 413 transitions, 6427 flow [2024-06-27 22:22:55,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 413 transitions, 6269 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:55,388 INFO L231 Difference]: Finished difference. Result has 306 places, 383 transitions, 5493 flow [2024-06-27 22:22:55,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5493, PETRI_PLACES=306, PETRI_TRANSITIONS=383} [2024-06-27 22:22:55,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-27 22:22:55,388 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 383 transitions, 5493 flow [2024-06-27 22:22:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:55,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:55,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:55,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:22:55,389 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:55,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2066585337, now seen corresponding path program 5 times [2024-06-27 22:22:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344442701] [2024-06-27 22:22:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:57,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344442701] [2024-06-27 22:22:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344442701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:57,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:57,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557290723] [2024-06-27 22:22:57,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:57,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:57,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 383 transitions, 5493 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:57,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:57,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:57,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:57,965 INFO L124 PetriNetUnfolderBase]: 1099/2133 cut-off events. [2024-06-27 22:22:57,965 INFO L125 PetriNetUnfolderBase]: For 116758/116807 co-relation queries the response was YES. [2024-06-27 22:22:57,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15908 conditions, 2133 events. 1099/2133 cut-off events. For 116758/116807 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13523 event pairs, 256 based on Foata normal form. 7/2038 useless extension candidates. Maximal degree in co-relation 15764. Up to 1714 conditions per place. [2024-06-27 22:22:57,991 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 309 selfloop transitions, 63 changer transitions 0/403 dead transitions. [2024-06-27 22:22:57,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 403 transitions, 6353 flow [2024-06-27 22:22:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:22:57,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 22:22:57,993 INFO L175 Difference]: Start difference. First operand has 306 places, 383 transitions, 5493 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:22:57,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 403 transitions, 6353 flow [2024-06-27 22:22:58,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 403 transitions, 6183 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:58,558 INFO L231 Difference]: Finished difference. Result has 307 places, 385 transitions, 5493 flow [2024-06-27 22:22:58,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5323, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5493, PETRI_PLACES=307, PETRI_TRANSITIONS=385} [2024-06-27 22:22:58,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 22:22:58,559 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 385 transitions, 5493 flow [2024-06-27 22:22:58,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:58,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:58,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:22:58,559 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:58,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2010660446, now seen corresponding path program 2 times [2024-06-27 22:22:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:58,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109713807] [2024-06-27 22:22:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109713807] [2024-06-27 22:23:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109713807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:00,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593739897] [2024-06-27 22:23:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:00,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:00,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 385 transitions, 5493 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:00,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:00,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:00,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:00,965 INFO L124 PetriNetUnfolderBase]: 1098/2138 cut-off events. [2024-06-27 22:23:00,965 INFO L125 PetriNetUnfolderBase]: For 115356/115406 co-relation queries the response was YES. [2024-06-27 22:23:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15859 conditions, 2138 events. 1098/2138 cut-off events. For 115356/115406 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13570 event pairs, 266 based on Foata normal form. 6/2050 useless extension candidates. Maximal degree in co-relation 15714. Up to 1680 conditions per place. [2024-06-27 22:23:00,992 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 301 selfloop transitions, 69 changer transitions 0/401 dead transitions. [2024-06-27 22:23:00,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 401 transitions, 6457 flow [2024-06-27 22:23:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:23:00,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 22:23:00,993 INFO L175 Difference]: Start difference. First operand has 307 places, 385 transitions, 5493 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:23:00,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 401 transitions, 6457 flow [2024-06-27 22:23:01,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 401 transitions, 6319 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:01,543 INFO L231 Difference]: Finished difference. Result has 309 places, 387 transitions, 5529 flow [2024-06-27 22:23:01,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5529, PETRI_PLACES=309, PETRI_TRANSITIONS=387} [2024-06-27 22:23:01,543 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 22:23:01,543 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 387 transitions, 5529 flow [2024-06-27 22:23:01,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:01,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:01,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:01,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:23:01,544 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:01,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2011607961, now seen corresponding path program 6 times [2024-06-27 22:23:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067060439] [2024-06-27 22:23:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:03,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:03,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067060439] [2024-06-27 22:23:03,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067060439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:03,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:03,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264226125] [2024-06-27 22:23:03,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:03,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 387 transitions, 5529 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:03,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:03,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:03,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:04,235 INFO L124 PetriNetUnfolderBase]: 1127/2185 cut-off events. [2024-06-27 22:23:04,235 INFO L125 PetriNetUnfolderBase]: For 121596/121650 co-relation queries the response was YES. [2024-06-27 22:23:04,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16183 conditions, 2185 events. 1127/2185 cut-off events. For 121596/121650 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13919 event pairs, 251 based on Foata normal form. 8/2092 useless extension candidates. Maximal degree in co-relation 16037. Up to 1644 conditions per place. [2024-06-27 22:23:04,261 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 316 selfloop transitions, 67 changer transitions 0/414 dead transitions. [2024-06-27 22:23:04,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 414 transitions, 6643 flow [2024-06-27 22:23:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:23:04,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:23:04,263 INFO L175 Difference]: Start difference. First operand has 309 places, 387 transitions, 5529 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:23:04,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 414 transitions, 6643 flow [2024-06-27 22:23:04,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 414 transitions, 6478 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:04,885 INFO L231 Difference]: Finished difference. Result has 311 places, 389 transitions, 5542 flow [2024-06-27 22:23:04,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5542, PETRI_PLACES=311, PETRI_TRANSITIONS=389} [2024-06-27 22:23:04,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 22:23:04,886 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 389 transitions, 5542 flow [2024-06-27 22:23:04,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:04,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:04,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:04,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:23:04,886 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:04,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2016374366, now seen corresponding path program 3 times [2024-06-27 22:23:04,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:04,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764907731] [2024-06-27 22:23:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:04,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764907731] [2024-06-27 22:23:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764907731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:06,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:06,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:06,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32949402] [2024-06-27 22:23:06,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:06,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:06,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:06,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 389 transitions, 5542 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:06,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:06,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:06,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:07,651 INFO L124 PetriNetUnfolderBase]: 1127/2195 cut-off events. [2024-06-27 22:23:07,651 INFO L125 PetriNetUnfolderBase]: For 121029/121079 co-relation queries the response was YES. [2024-06-27 22:23:07,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16271 conditions, 2195 events. 1127/2195 cut-off events. For 121029/121079 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14023 event pairs, 276 based on Foata normal form. 6/2096 useless extension candidates. Maximal degree in co-relation 16124. Up to 1775 conditions per place. [2024-06-27 22:23:07,676 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 300 selfloop transitions, 73 changer transitions 0/404 dead transitions. [2024-06-27 22:23:07,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 404 transitions, 6350 flow [2024-06-27 22:23:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:23:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 22:23:07,677 INFO L175 Difference]: Start difference. First operand has 311 places, 389 transitions, 5542 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:23:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 404 transitions, 6350 flow [2024-06-27 22:23:08,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 404 transitions, 6184 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:08,214 INFO L231 Difference]: Finished difference. Result has 313 places, 391 transitions, 5568 flow [2024-06-27 22:23:08,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5568, PETRI_PLACES=313, PETRI_TRANSITIONS=391} [2024-06-27 22:23:08,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:23:08,215 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 391 transitions, 5568 flow [2024-06-27 22:23:08,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:08,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:08,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:23:08,215 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:08,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2016410853, now seen corresponding path program 1 times [2024-06-27 22:23:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206655169] [2024-06-27 22:23:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:10,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:10,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206655169] [2024-06-27 22:23:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206655169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:10,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802987709] [2024-06-27 22:23:10,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:10,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:23:10,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 391 transitions, 5568 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:10,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:10,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:23:10,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:11,260 INFO L124 PetriNetUnfolderBase]: 1306/2433 cut-off events. [2024-06-27 22:23:11,260 INFO L125 PetriNetUnfolderBase]: For 141691/141694 co-relation queries the response was YES. [2024-06-27 22:23:11,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18701 conditions, 2433 events. 1306/2433 cut-off events. For 141691/141694 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15017 event pairs, 302 based on Foata normal form. 5/2349 useless extension candidates. Maximal degree in co-relation 18553. Up to 2074 conditions per place. [2024-06-27 22:23:11,292 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 342 selfloop transitions, 79 changer transitions 0/429 dead transitions. [2024-06-27 22:23:11,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 429 transitions, 7032 flow [2024-06-27 22:23:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:23:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:23:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-27 22:23:11,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158004158004158 [2024-06-27 22:23:11,293 INFO L175 Difference]: Start difference. First operand has 313 places, 391 transitions, 5568 flow. Second operand 13 states and 200 transitions. [2024-06-27 22:23:11,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 429 transitions, 7032 flow [2024-06-27 22:23:11,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 429 transitions, 6900 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:11,950 INFO L231 Difference]: Finished difference. Result has 320 places, 402 transitions, 5817 flow [2024-06-27 22:23:11,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5436, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5817, PETRI_PLACES=320, PETRI_TRANSITIONS=402} [2024-06-27 22:23:11,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 22:23:11,951 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 402 transitions, 5817 flow [2024-06-27 22:23:11,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:11,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:11,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:11,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:23:11,951 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:11,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:11,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2010660291, now seen corresponding path program 7 times [2024-06-27 22:23:11,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:11,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443581971] [2024-06-27 22:23:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443581971] [2024-06-27 22:23:13,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443581971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:13,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:13,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:13,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001451671] [2024-06-27 22:23:13,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:13,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:13,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:13,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:13,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:14,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:14,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 402 transitions, 5817 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:14,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:14,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:14,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:14,776 INFO L124 PetriNetUnfolderBase]: 1161/2251 cut-off events. [2024-06-27 22:23:14,776 INFO L125 PetriNetUnfolderBase]: For 130159/130219 co-relation queries the response was YES. [2024-06-27 22:23:14,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16731 conditions, 2251 events. 1161/2251 cut-off events. For 130159/130219 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14413 event pairs, 268 based on Foata normal form. 9/2153 useless extension candidates. Maximal degree in co-relation 16581. Up to 1792 conditions per place. [2024-06-27 22:23:14,806 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 325 selfloop transitions, 63 changer transitions 0/420 dead transitions. [2024-06-27 22:23:14,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 420 transitions, 6675 flow [2024-06-27 22:23:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:23:14,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 22:23:14,807 INFO L175 Difference]: Start difference. First operand has 320 places, 402 transitions, 5817 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:23:14,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 420 transitions, 6675 flow [2024-06-27 22:23:15,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 420 transitions, 6541 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:15,447 INFO L231 Difference]: Finished difference. Result has 322 places, 402 transitions, 5815 flow [2024-06-27 22:23:15,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5683, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5815, PETRI_PLACES=322, PETRI_TRANSITIONS=402} [2024-06-27 22:23:15,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 22:23:15,447 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 402 transitions, 5815 flow [2024-06-27 22:23:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:15,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:15,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:15,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:23:15,448 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:15,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2016231146, now seen corresponding path program 4 times [2024-06-27 22:23:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:15,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837421323] [2024-06-27 22:23:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837421323] [2024-06-27 22:23:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837421323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:17,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:17,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44007210] [2024-06-27 22:23:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:17,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:17,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 402 transitions, 5815 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:17,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:17,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:17,885 INFO L124 PetriNetUnfolderBase]: 1156/2241 cut-off events. [2024-06-27 22:23:17,885 INFO L125 PetriNetUnfolderBase]: For 124308/124361 co-relation queries the response was YES. [2024-06-27 22:23:17,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16537 conditions, 2241 events. 1156/2241 cut-off events. For 124308/124361 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14343 event pairs, 272 based on Foata normal form. 6/2138 useless extension candidates. Maximal degree in co-relation 16385. Up to 1796 conditions per place. [2024-06-27 22:23:17,913 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 312 selfloop transitions, 71 changer transitions 0/415 dead transitions. [2024-06-27 22:23:17,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 415 transitions, 6613 flow [2024-06-27 22:23:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:23:17,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 22:23:17,915 INFO L175 Difference]: Start difference. First operand has 322 places, 402 transitions, 5815 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:23:17,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 415 transitions, 6613 flow [2024-06-27 22:23:18,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 415 transitions, 6459 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:18,551 INFO L231 Difference]: Finished difference. Result has 323 places, 402 transitions, 5809 flow [2024-06-27 22:23:18,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5661, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5809, PETRI_PLACES=323, PETRI_TRANSITIONS=402} [2024-06-27 22:23:18,552 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 22:23:18,552 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 402 transitions, 5809 flow [2024-06-27 22:23:18,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:18,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:18,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:18,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:23:18,552 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:18,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 344333125, now seen corresponding path program 2 times [2024-06-27 22:23:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542879080] [2024-06-27 22:23:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542879080] [2024-06-27 22:23:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542879080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:20,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:20,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140923081] [2024-06-27 22:23:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:20,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:20,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:23:20,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 402 transitions, 5809 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:20,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:20,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:23:20,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:21,326 INFO L124 PetriNetUnfolderBase]: 1303/2434 cut-off events. [2024-06-27 22:23:21,326 INFO L125 PetriNetUnfolderBase]: For 131239/131242 co-relation queries the response was YES. [2024-06-27 22:23:21,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 2434 events. 1303/2434 cut-off events. For 131239/131242 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15031 event pairs, 277 based on Foata normal form. 5/2345 useless extension candidates. Maximal degree in co-relation 18276. Up to 2130 conditions per place. [2024-06-27 22:23:21,359 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 358 selfloop transitions, 58 changer transitions 0/424 dead transitions. [2024-06-27 22:23:21,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 424 transitions, 6818 flow [2024-06-27 22:23:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 22:23:21,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-27 22:23:21,360 INFO L175 Difference]: Start difference. First operand has 323 places, 402 transitions, 5809 flow. Second operand 11 states and 167 transitions. [2024-06-27 22:23:21,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 424 transitions, 6818 flow [2024-06-27 22:23:22,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 424 transitions, 6634 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:22,087 INFO L231 Difference]: Finished difference. Result has 325 places, 406 transitions, 5808 flow [2024-06-27 22:23:22,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5625, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5808, PETRI_PLACES=325, PETRI_TRANSITIONS=406} [2024-06-27 22:23:22,088 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-27 22:23:22,088 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 406 transitions, 5808 flow [2024-06-27 22:23:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:22,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:22,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:22,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:23:22,088 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:22,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:22,089 INFO L85 PathProgramCache]: Analyzing trace with hash 611893660, now seen corresponding path program 5 times [2024-06-27 22:23:22,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:22,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136729515] [2024-06-27 22:23:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:22,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136729515] [2024-06-27 22:23:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136729515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580569125] [2024-06-27 22:23:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:23,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:23,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 406 transitions, 5808 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:23,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:23,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:23,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:24,498 INFO L124 PetriNetUnfolderBase]: 1189/2280 cut-off events. [2024-06-27 22:23:24,499 INFO L125 PetriNetUnfolderBase]: For 125383/125425 co-relation queries the response was YES. [2024-06-27 22:23:24,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16723 conditions, 2280 events. 1189/2280 cut-off events. For 125383/125425 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14400 event pairs, 252 based on Foata normal form. 6/2162 useless extension candidates. Maximal degree in co-relation 16569. Up to 1691 conditions per place. [2024-06-27 22:23:24,529 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 256 selfloop transitions, 138 changer transitions 0/426 dead transitions. [2024-06-27 22:23:24,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 426 transitions, 6910 flow [2024-06-27 22:23:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:23:24,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:23:24,530 INFO L175 Difference]: Start difference. First operand has 325 places, 406 transitions, 5808 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:23:24,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 426 transitions, 6910 flow [2024-06-27 22:23:25,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 426 transitions, 6777 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:25,223 INFO L231 Difference]: Finished difference. Result has 325 places, 414 transitions, 6072 flow [2024-06-27 22:23:25,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6072, PETRI_PLACES=325, PETRI_TRANSITIONS=414} [2024-06-27 22:23:25,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-27 22:23:25,224 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 414 transitions, 6072 flow [2024-06-27 22:23:25,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:25,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:25,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:25,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:23:25,225 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:25,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash 611893505, now seen corresponding path program 8 times [2024-06-27 22:23:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:25,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289914607] [2024-06-27 22:23:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:25,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289914607] [2024-06-27 22:23:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289914607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:26,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902409319] [2024-06-27 22:23:26,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:26,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:27,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:27,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 414 transitions, 6072 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:27,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:27,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:27,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:27,802 INFO L124 PetriNetUnfolderBase]: 1205/2317 cut-off events. [2024-06-27 22:23:27,803 INFO L125 PetriNetUnfolderBase]: For 133042/133085 co-relation queries the response was YES. [2024-06-27 22:23:27,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17179 conditions, 2317 events. 1205/2317 cut-off events. For 133042/133085 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14739 event pairs, 257 based on Foata normal form. 7/2196 useless extension candidates. Maximal degree in co-relation 17025. Up to 1815 conditions per place. [2024-06-27 22:23:27,831 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 294 selfloop transitions, 104 changer transitions 0/430 dead transitions. [2024-06-27 22:23:27,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 430 transitions, 6954 flow [2024-06-27 22:23:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:23:27,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:23:27,832 INFO L175 Difference]: Start difference. First operand has 325 places, 414 transitions, 6072 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:23:27,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 430 transitions, 6954 flow [2024-06-27 22:23:28,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 430 transitions, 6804 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:23:28,488 INFO L231 Difference]: Finished difference. Result has 332 places, 415 transitions, 6160 flow [2024-06-27 22:23:28,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5922, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6160, PETRI_PLACES=332, PETRI_TRANSITIONS=415} [2024-06-27 22:23:28,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 22:23:28,489 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 415 transitions, 6160 flow [2024-06-27 22:23:28,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:28,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:28,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:28,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:23:28,490 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:28,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash 611745635, now seen corresponding path program 9 times [2024-06-27 22:23:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:28,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444162999] [2024-06-27 22:23:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:28,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:30,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444162999] [2024-06-27 22:23:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444162999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:30,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995009204] [2024-06-27 22:23:30,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:30,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:30,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:30,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 415 transitions, 6160 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:30,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:30,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:30,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:31,328 INFO L124 PetriNetUnfolderBase]: 1237/2389 cut-off events. [2024-06-27 22:23:31,328 INFO L125 PetriNetUnfolderBase]: For 145666/145708 co-relation queries the response was YES. [2024-06-27 22:23:31,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18025 conditions, 2389 events. 1237/2389 cut-off events. For 145666/145708 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15398 event pairs, 264 based on Foata normal form. 7/2267 useless extension candidates. Maximal degree in co-relation 17869. Up to 1778 conditions per place. [2024-06-27 22:23:31,361 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 297 selfloop transitions, 108 changer transitions 0/437 dead transitions. [2024-06-27 22:23:31,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 437 transitions, 7300 flow [2024-06-27 22:23:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:23:31,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:23:31,362 INFO L175 Difference]: Start difference. First operand has 332 places, 415 transitions, 6160 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:23:31,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 437 transitions, 7300 flow [2024-06-27 22:23:32,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 437 transitions, 7076 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:32,135 INFO L231 Difference]: Finished difference. Result has 334 places, 417 transitions, 6210 flow [2024-06-27 22:23:32,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5936, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6210, PETRI_PLACES=334, PETRI_TRANSITIONS=417} [2024-06-27 22:23:32,136 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 22:23:32,136 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 417 transitions, 6210 flow [2024-06-27 22:23:32,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:32,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:32,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:32,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:23:32,137 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:32,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash 611749510, now seen corresponding path program 6 times [2024-06-27 22:23:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056754811] [2024-06-27 22:23:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:34,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:34,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056754811] [2024-06-27 22:23:34,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056754811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:34,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:34,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:34,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794061349] [2024-06-27 22:23:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:34,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:34,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:34,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:34,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:34,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 417 transitions, 6210 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:34,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:34,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:34,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:34,908 INFO L124 PetriNetUnfolderBase]: 1251/2419 cut-off events. [2024-06-27 22:23:34,908 INFO L125 PetriNetUnfolderBase]: For 148709/148751 co-relation queries the response was YES. [2024-06-27 22:23:34,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18352 conditions, 2419 events. 1251/2419 cut-off events. For 148709/148751 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 15594 event pairs, 271 based on Foata normal form. 6/2289 useless extension candidates. Maximal degree in co-relation 18195. Up to 1760 conditions per place. [2024-06-27 22:23:34,939 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 258 selfloop transitions, 143 changer transitions 0/433 dead transitions. [2024-06-27 22:23:34,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 433 transitions, 7304 flow [2024-06-27 22:23:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:23:34,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:23:34,940 INFO L175 Difference]: Start difference. First operand has 334 places, 417 transitions, 6210 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:23:34,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 433 transitions, 7304 flow [2024-06-27 22:23:35,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 433 transitions, 7136 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:23:35,717 INFO L231 Difference]: Finished difference. Result has 338 places, 421 transitions, 6421 flow [2024-06-27 22:23:35,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6042, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6421, PETRI_PLACES=338, PETRI_TRANSITIONS=421} [2024-06-27 22:23:35,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:23:35,718 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 421 transitions, 6421 flow [2024-06-27 22:23:35,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:35,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:35,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:35,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:23:35,718 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:35,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash 617471087, now seen corresponding path program 3 times [2024-06-27 22:23:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:35,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362179427] [2024-06-27 22:23:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:35,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:37,642 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 22:23:37,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362179427] [2024-06-27 22:23:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362179427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113998020] [2024-06-27 22:23:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:37,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:37,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:37,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:23:37,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 421 transitions, 6421 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:37,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:37,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:23:37,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:38,892 INFO L124 PetriNetUnfolderBase]: 1446/2721 cut-off events. [2024-06-27 22:23:38,893 INFO L125 PetriNetUnfolderBase]: For 170299/170302 co-relation queries the response was YES. [2024-06-27 22:23:38,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21457 conditions, 2721 events. 1446/2721 cut-off events. For 170299/170302 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17371 event pairs, 298 based on Foata normal form. 5/2614 useless extension candidates. Maximal degree in co-relation 21298. Up to 1819 conditions per place. [2024-06-27 22:23:38,927 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 254 selfloop transitions, 220 changer transitions 0/482 dead transitions. [2024-06-27 22:23:38,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 482 transitions, 8440 flow [2024-06-27 22:23:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:23:38,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:23:38,929 INFO L175 Difference]: Start difference. First operand has 338 places, 421 transitions, 6421 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:23:38,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 482 transitions, 8440 flow [2024-06-27 22:23:39,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 482 transitions, 8231 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:23:39,803 INFO L231 Difference]: Finished difference. Result has 344 places, 455 transitions, 7157 flow [2024-06-27 22:23:39,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7157, PETRI_PLACES=344, PETRI_TRANSITIONS=455} [2024-06-27 22:23:39,804 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-27 22:23:39,804 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 455 transitions, 7157 flow [2024-06-27 22:23:39,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:39,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:39,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:39,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:23:39,805 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:39,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 824055075, now seen corresponding path program 4 times [2024-06-27 22:23:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920052274] [2024-06-27 22:23:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920052274] [2024-06-27 22:23:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920052274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:41,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:41,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:41,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205186449] [2024-06-27 22:23:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:41,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:41,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:41,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:23:41,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 455 transitions, 7157 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:41,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:41,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:23:41,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:42,864 INFO L124 PetriNetUnfolderBase]: 1457/2738 cut-off events. [2024-06-27 22:23:42,864 INFO L125 PetriNetUnfolderBase]: For 176588/176591 co-relation queries the response was YES. [2024-06-27 22:23:42,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22476 conditions, 2738 events. 1457/2738 cut-off events. For 176588/176591 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 17489 event pairs, 295 based on Foata normal form. 5/2630 useless extension candidates. Maximal degree in co-relation 22314. Up to 1829 conditions per place. [2024-06-27 22:23:42,901 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 275 selfloop transitions, 202 changer transitions 0/485 dead transitions. [2024-06-27 22:23:42,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 485 transitions, 8835 flow [2024-06-27 22:23:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:23:42,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:23:42,902 INFO L175 Difference]: Start difference. First operand has 344 places, 455 transitions, 7157 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:23:42,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 485 transitions, 8835 flow [2024-06-27 22:23:43,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 485 transitions, 8645 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:43,790 INFO L231 Difference]: Finished difference. Result has 350 places, 457 transitions, 7440 flow [2024-06-27 22:23:43,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7440, PETRI_PLACES=350, PETRI_TRANSITIONS=457} [2024-06-27 22:23:43,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-27 22:23:43,791 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 457 transitions, 7440 flow [2024-06-27 22:23:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:43,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:43,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:43,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:23:43,791 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:43,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash 611749355, now seen corresponding path program 10 times [2024-06-27 22:23:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964308231] [2024-06-27 22:23:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:43,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:45,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:45,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964308231] [2024-06-27 22:23:45,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964308231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:45,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:45,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:45,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397598560] [2024-06-27 22:23:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:45,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:45,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:45,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 457 transitions, 7440 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:45,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:45,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:46,326 INFO L124 PetriNetUnfolderBase]: 1353/2583 cut-off events. [2024-06-27 22:23:46,327 INFO L125 PetriNetUnfolderBase]: For 168661/168716 co-relation queries the response was YES. [2024-06-27 22:23:46,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 2583 events. 1353/2583 cut-off events. For 168661/168716 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16653 event pairs, 260 based on Foata normal form. 7/2426 useless extension candidates. Maximal degree in co-relation 20498. Up to 2029 conditions per place. [2024-06-27 22:23:46,361 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 333 selfloop transitions, 106 changer transitions 0/473 dead transitions. [2024-06-27 22:23:46,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 473 transitions, 8398 flow [2024-06-27 22:23:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:23:46,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:23:46,362 INFO L175 Difference]: Start difference. First operand has 350 places, 457 transitions, 7440 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:23:46,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 473 transitions, 8398 flow [2024-06-27 22:23:47,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 473 transitions, 7949 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:47,100 INFO L231 Difference]: Finished difference. Result has 351 places, 458 transitions, 7227 flow [2024-06-27 22:23:47,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6991, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7227, PETRI_PLACES=351, PETRI_TRANSITIONS=458} [2024-06-27 22:23:47,100 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 22:23:47,101 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 458 transitions, 7227 flow [2024-06-27 22:23:47,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:47,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:47,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:47,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:23:47,101 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:47,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 611899240, now seen corresponding path program 7 times [2024-06-27 22:23:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139587092] [2024-06-27 22:23:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139587092] [2024-06-27 22:23:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139587092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:48,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:48,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776950237] [2024-06-27 22:23:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:49,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:49,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 458 transitions, 7227 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:49,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:49,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:49,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:49,954 INFO L124 PetriNetUnfolderBase]: 1366/2601 cut-off events. [2024-06-27 22:23:49,954 INFO L125 PetriNetUnfolderBase]: For 171007/171062 co-relation queries the response was YES. [2024-06-27 22:23:49,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20416 conditions, 2601 events. 1366/2601 cut-off events. For 171007/171062 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 16779 event pairs, 257 based on Foata normal form. 8/2439 useless extension candidates. Maximal degree in co-relation 20252. Up to 1720 conditions per place. [2024-06-27 22:23:49,990 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 241 selfloop transitions, 203 changer transitions 0/478 dead transitions. [2024-06-27 22:23:49,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 478 transitions, 8601 flow [2024-06-27 22:23:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:23:49,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:23:49,991 INFO L175 Difference]: Start difference. First operand has 351 places, 458 transitions, 7227 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:23:49,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 478 transitions, 8601 flow [2024-06-27 22:23:50,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 478 transitions, 8367 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:50,775 INFO L231 Difference]: Finished difference. Result has 353 places, 460 transitions, 7467 flow [2024-06-27 22:23:50,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7467, PETRI_PLACES=353, PETRI_TRANSITIONS=460} [2024-06-27 22:23:50,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-27 22:23:50,776 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 460 transitions, 7467 flow [2024-06-27 22:23:50,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:50,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:50,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:23:50,777 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:50,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 617255885, now seen corresponding path program 11 times [2024-06-27 22:23:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:50,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258697316] [2024-06-27 22:23:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258697316] [2024-06-27 22:23:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258697316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633526066] [2024-06-27 22:23:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:52,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:52,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 460 transitions, 7467 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:52,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:52,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:52,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:53,670 INFO L124 PetriNetUnfolderBase]: 1362/2595 cut-off events. [2024-06-27 22:23:53,670 INFO L125 PetriNetUnfolderBase]: For 161886/161941 co-relation queries the response was YES. [2024-06-27 22:23:53,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20463 conditions, 2595 events. 1362/2595 cut-off events. For 161886/161941 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16728 event pairs, 262 based on Foata normal form. 7/2432 useless extension candidates. Maximal degree in co-relation 20298. Up to 2061 conditions per place. [2024-06-27 22:23:53,705 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 329 selfloop transitions, 112 changer transitions 0/475 dead transitions. [2024-06-27 22:23:53,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 475 transitions, 8411 flow [2024-06-27 22:23:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:23:53,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:23:53,708 INFO L175 Difference]: Start difference. First operand has 353 places, 460 transitions, 7467 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:23:53,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 475 transitions, 8411 flow [2024-06-27 22:23:54,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 475 transitions, 7969 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:54,451 INFO L231 Difference]: Finished difference. Result has 355 places, 460 transitions, 7253 flow [2024-06-27 22:23:54,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7025, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7253, PETRI_PLACES=355, PETRI_TRANSITIONS=460} [2024-06-27 22:23:54,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 22:23:54,451 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 460 transitions, 7253 flow [2024-06-27 22:23:54,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:54,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:54,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:54,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:23:54,452 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:54,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:54,452 INFO L85 PathProgramCache]: Analyzing trace with hash 617256040, now seen corresponding path program 8 times [2024-06-27 22:23:54,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:54,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56521080] [2024-06-27 22:23:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:56,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56521080] [2024-06-27 22:23:56,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56521080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:56,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669176371] [2024-06-27 22:23:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:56,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:56,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 460 transitions, 7253 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:56,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:56,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:56,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:56,930 INFO L124 PetriNetUnfolderBase]: 1368/2604 cut-off events. [2024-06-27 22:23:56,930 INFO L125 PetriNetUnfolderBase]: For 157123/157178 co-relation queries the response was YES. [2024-06-27 22:23:56,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20099 conditions, 2604 events. 1368/2604 cut-off events. For 157123/157178 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 16796 event pairs, 263 based on Foata normal form. 6/2438 useless extension candidates. Maximal degree in co-relation 19933. Up to 1971 conditions per place. [2024-06-27 22:23:56,964 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 294 selfloop transitions, 146 changer transitions 0/474 dead transitions. [2024-06-27 22:23:56,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 474 transitions, 8387 flow [2024-06-27 22:23:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:23:56,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:23:56,965 INFO L175 Difference]: Start difference. First operand has 355 places, 460 transitions, 7253 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:23:56,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 474 transitions, 8387 flow [2024-06-27 22:23:57,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 474 transitions, 8153 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:57,708 INFO L231 Difference]: Finished difference. Result has 355 places, 462 transitions, 7350 flow [2024-06-27 22:23:57,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7350, PETRI_PLACES=355, PETRI_TRANSITIONS=462} [2024-06-27 22:23:57,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 22:23:57,709 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 462 transitions, 7350 flow [2024-06-27 22:23:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:57,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:57,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:23:57,709 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:57,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 617261620, now seen corresponding path program 9 times [2024-06-27 22:23:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608102581] [2024-06-27 22:23:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:59,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:59,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608102581] [2024-06-27 22:23:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608102581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354456961] [2024-06-27 22:23:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:59,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:59,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:59,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:59,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 462 transitions, 7350 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:59,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:59,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:59,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:00,757 INFO L124 PetriNetUnfolderBase]: 1397/2644 cut-off events. [2024-06-27 22:24:00,757 INFO L125 PetriNetUnfolderBase]: For 179628/179685 co-relation queries the response was YES. [2024-06-27 22:24:00,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20599 conditions, 2644 events. 1397/2644 cut-off events. For 179628/179685 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 16970 event pairs, 265 based on Foata normal form. 10/2472 useless extension candidates. Maximal degree in co-relation 20433. Up to 1763 conditions per place. [2024-06-27 22:24:00,795 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 241 selfloop transitions, 213 changer transitions 0/488 dead transitions. [2024-06-27 22:24:00,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 488 transitions, 8852 flow [2024-06-27 22:24:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:24:00,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:24:00,797 INFO L175 Difference]: Start difference. First operand has 355 places, 462 transitions, 7350 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:24:00,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 488 transitions, 8852 flow [2024-06-27 22:24:01,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 488 transitions, 8392 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:01,635 INFO L231 Difference]: Finished difference. Result has 358 places, 468 transitions, 7486 flow [2024-06-27 22:24:01,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6904, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7486, PETRI_PLACES=358, PETRI_TRANSITIONS=468} [2024-06-27 22:24:01,636 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 22:24:01,636 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 468 transitions, 7486 flow [2024-06-27 22:24:01,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:01,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:01,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:24:01,636 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:01,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 617463647, now seen corresponding path program 5 times [2024-06-27 22:24:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879255367] [2024-06-27 22:24:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879255367] [2024-06-27 22:24:03,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879255367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:03,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:03,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:03,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187092152] [2024-06-27 22:24:03,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:03,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:03,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:03,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:03,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 468 transitions, 7486 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:03,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:03,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:03,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:04,763 INFO L124 PetriNetUnfolderBase]: 1514/2837 cut-off events. [2024-06-27 22:24:04,763 INFO L125 PetriNetUnfolderBase]: For 175327/175330 co-relation queries the response was YES. [2024-06-27 22:24:04,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22756 conditions, 2837 events. 1514/2837 cut-off events. For 175327/175330 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18209 event pairs, 296 based on Foata normal form. 5/2717 useless extension candidates. Maximal degree in co-relation 22588. Up to 1915 conditions per place. [2024-06-27 22:24:04,802 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 269 selfloop transitions, 218 changer transitions 0/495 dead transitions. [2024-06-27 22:24:04,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 495 transitions, 8950 flow [2024-06-27 22:24:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:24:04,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:24:04,803 INFO L175 Difference]: Start difference. First operand has 358 places, 468 transitions, 7486 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:24:04,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 495 transitions, 8950 flow [2024-06-27 22:24:05,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 495 transitions, 8477 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:05,581 INFO L231 Difference]: Finished difference. Result has 361 places, 468 transitions, 7460 flow [2024-06-27 22:24:05,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7017, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7460, PETRI_PLACES=361, PETRI_TRANSITIONS=468} [2024-06-27 22:24:05,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 22:24:05,582 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 468 transitions, 7460 flow [2024-06-27 22:24:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:05,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:05,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:05,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:24:05,582 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:05,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 617463430, now seen corresponding path program 10 times [2024-06-27 22:24:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:05,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172050044] [2024-06-27 22:24:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:07,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:07,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172050044] [2024-06-27 22:24:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172050044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:07,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:07,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369026140] [2024-06-27 22:24:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:07,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:07,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:07,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 468 transitions, 7460 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:07,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:07,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:07,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:08,498 INFO L124 PetriNetUnfolderBase]: 1403/2655 cut-off events. [2024-06-27 22:24:08,498 INFO L125 PetriNetUnfolderBase]: For 160883/160938 co-relation queries the response was YES. [2024-06-27 22:24:08,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20316 conditions, 2655 events. 1403/2655 cut-off events. For 160883/160938 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 17077 event pairs, 254 based on Foata normal form. 8/2476 useless extension candidates. Maximal degree in co-relation 20149. Up to 1768 conditions per place. [2024-06-27 22:24:08,534 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 229 selfloop transitions, 225 changer transitions 0/488 dead transitions. [2024-06-27 22:24:08,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 488 transitions, 8690 flow [2024-06-27 22:24:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:24:08,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:24:08,535 INFO L175 Difference]: Start difference. First operand has 361 places, 468 transitions, 7460 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:24:08,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 488 transitions, 8690 flow [2024-06-27 22:24:09,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 488 transitions, 8257 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:09,511 INFO L231 Difference]: Finished difference. Result has 362 places, 470 transitions, 7555 flow [2024-06-27 22:24:09,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7027, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7555, PETRI_PLACES=362, PETRI_TRANSITIONS=470} [2024-06-27 22:24:09,511 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-27 22:24:09,511 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 470 transitions, 7555 flow [2024-06-27 22:24:09,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:09,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:09,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:09,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:24:09,512 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:09,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1003053206, now seen corresponding path program 11 times [2024-06-27 22:24:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:09,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974026734] [2024-06-27 22:24:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:11,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974026734] [2024-06-27 22:24:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974026734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:11,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:11,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031136874] [2024-06-27 22:24:11,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:11,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:11,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:11,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 470 transitions, 7555 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:11,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:11,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:11,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:12,150 INFO L124 PetriNetUnfolderBase]: 1539/2874 cut-off events. [2024-06-27 22:24:12,151 INFO L125 PetriNetUnfolderBase]: For 172396/172399 co-relation queries the response was YES. [2024-06-27 22:24:12,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23086 conditions, 2874 events. 1539/2874 cut-off events. For 172396/172399 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 18422 event pairs, 475 based on Foata normal form. 2/2747 useless extension candidates. Maximal degree in co-relation 22918. Up to 2462 conditions per place. [2024-06-27 22:24:12,189 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 430 selfloop transitions, 60 changer transitions 0/498 dead transitions. [2024-06-27 22:24:12,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 498 transitions, 9205 flow [2024-06-27 22:24:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:24:12,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 22:24:12,190 INFO L175 Difference]: Start difference. First operand has 362 places, 470 transitions, 7555 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:24:12,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 498 transitions, 9205 flow [2024-06-27 22:24:13,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 498 transitions, 8717 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:13,105 INFO L231 Difference]: Finished difference. Result has 364 places, 476 transitions, 7312 flow [2024-06-27 22:24:13,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7067, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7312, PETRI_PLACES=364, PETRI_TRANSITIONS=476} [2024-06-27 22:24:13,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 22:24:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 476 transitions, 7312 flow [2024-06-27 22:24:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:13,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:13,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:13,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:24:13,106 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:13,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 625333249, now seen corresponding path program 12 times [2024-06-27 22:24:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774514382] [2024-06-27 22:24:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774514382] [2024-06-27 22:24:14,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774514382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:14,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:14,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:14,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246448321] [2024-06-27 22:24:14,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:14,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:14,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:14,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:14,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 476 transitions, 7312 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:14,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:14,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:14,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:15,674 INFO L124 PetriNetUnfolderBase]: 1556/2912 cut-off events. [2024-06-27 22:24:15,674 INFO L125 PetriNetUnfolderBase]: For 178434/178437 co-relation queries the response was YES. [2024-06-27 22:24:15,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22907 conditions, 2912 events. 1556/2912 cut-off events. For 178434/178437 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 18756 event pairs, 471 based on Foata normal form. 3/2785 useless extension candidates. Maximal degree in co-relation 22738. Up to 2452 conditions per place. [2024-06-27 22:24:15,707 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 451 selfloop transitions, 45 changer transitions 0/504 dead transitions. [2024-06-27 22:24:15,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 504 transitions, 8885 flow [2024-06-27 22:24:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:24:15,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 22:24:15,708 INFO L175 Difference]: Start difference. First operand has 364 places, 476 transitions, 7312 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:24:15,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 504 transitions, 8885 flow [2024-06-27 22:24:16,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 504 transitions, 8736 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:16,693 INFO L231 Difference]: Finished difference. Result has 369 places, 477 transitions, 7285 flow [2024-06-27 22:24:16,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7163, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7285, PETRI_PLACES=369, PETRI_TRANSITIONS=477} [2024-06-27 22:24:16,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 22:24:16,693 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 477 transitions, 7285 flow [2024-06-27 22:24:16,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:16,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:16,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:16,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:24:16,694 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:16,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 630843654, now seen corresponding path program 12 times [2024-06-27 22:24:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746861192] [2024-06-27 22:24:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746861192] [2024-06-27 22:24:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746861192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:18,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139858405] [2024-06-27 22:24:18,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:18,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:18,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:18,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 477 transitions, 7285 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:18,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:18,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:18,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:19,194 INFO L124 PetriNetUnfolderBase]: 1570/2935 cut-off events. [2024-06-27 22:24:19,195 INFO L125 PetriNetUnfolderBase]: For 181292/181295 co-relation queries the response was YES. [2024-06-27 22:24:19,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23307 conditions, 2935 events. 1570/2935 cut-off events. For 181292/181295 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18912 event pairs, 484 based on Foata normal form. 2/2803 useless extension candidates. Maximal degree in co-relation 23136. Up to 2510 conditions per place. [2024-06-27 22:24:19,228 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 445 selfloop transitions, 56 changer transitions 0/509 dead transitions. [2024-06-27 22:24:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 509 transitions, 9066 flow [2024-06-27 22:24:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:24:19,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 22:24:19,229 INFO L175 Difference]: Start difference. First operand has 369 places, 477 transitions, 7285 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:24:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 509 transitions, 9066 flow [2024-06-27 22:24:20,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 509 transitions, 8846 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:20,263 INFO L231 Difference]: Finished difference. Result has 370 places, 483 transitions, 7308 flow [2024-06-27 22:24:20,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7065, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7308, PETRI_PLACES=370, PETRI_TRANSITIONS=483} [2024-06-27 22:24:20,263 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-27 22:24:20,263 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 483 transitions, 7308 flow [2024-06-27 22:24:20,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:20,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:20,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:20,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:24:20,264 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:20,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 625486854, now seen corresponding path program 13 times [2024-06-27 22:24:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:20,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291393537] [2024-06-27 22:24:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:20,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291393537] [2024-06-27 22:24:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291393537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:21,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:21,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:21,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066916408] [2024-06-27 22:24:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:21,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:21,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:21,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 483 transitions, 7308 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:21,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:21,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:21,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:22,711 INFO L124 PetriNetUnfolderBase]: 1568/2932 cut-off events. [2024-06-27 22:24:22,712 INFO L125 PetriNetUnfolderBase]: For 177407/177410 co-relation queries the response was YES. [2024-06-27 22:24:22,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 2932 events. 1568/2932 cut-off events. For 177407/177410 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18899 event pairs, 484 based on Foata normal form. 2/2800 useless extension candidates. Maximal degree in co-relation 22484. Up to 2523 conditions per place. [2024-06-27 22:24:22,745 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 435 selfloop transitions, 60 changer transitions 0/503 dead transitions. [2024-06-27 22:24:22,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 503 transitions, 8620 flow [2024-06-27 22:24:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:22,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 22:24:22,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 22:24:22,746 INFO L175 Difference]: Start difference. First operand has 370 places, 483 transitions, 7308 flow. Second operand 10 states and 153 transitions. [2024-06-27 22:24:22,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 503 transitions, 8620 flow [2024-06-27 22:24:23,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 503 transitions, 8501 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:23,782 INFO L231 Difference]: Finished difference. Result has 376 places, 483 transitions, 7315 flow [2024-06-27 22:24:23,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7315, PETRI_PLACES=376, PETRI_TRANSITIONS=483} [2024-06-27 22:24:23,782 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-27 22:24:23,782 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 483 transitions, 7315 flow [2024-06-27 22:24:23,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:23,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:23,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:24:23,783 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:23,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash 625481119, now seen corresponding path program 13 times [2024-06-27 22:24:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:23,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927199643] [2024-06-27 22:24:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:23,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927199643] [2024-06-27 22:24:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927199643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:25,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397458924] [2024-06-27 22:24:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:25,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:25,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:25,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 483 transitions, 7315 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:25,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:25,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:25,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:26,501 INFO L124 PetriNetUnfolderBase]: 1585/2972 cut-off events. [2024-06-27 22:24:26,501 INFO L125 PetriNetUnfolderBase]: For 184910/184913 co-relation queries the response was YES. [2024-06-27 22:24:26,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22827 conditions, 2972 events. 1585/2972 cut-off events. For 184910/184913 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 19243 event pairs, 487 based on Foata normal form. 3/2839 useless extension candidates. Maximal degree in co-relation 22655. Up to 2591 conditions per place. [2024-06-27 22:24:26,538 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 460 selfloop transitions, 38 changer transitions 0/506 dead transitions. [2024-06-27 22:24:26,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 506 transitions, 8637 flow [2024-06-27 22:24:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-27 22:24:26,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803439803439805 [2024-06-27 22:24:26,540 INFO L175 Difference]: Start difference. First operand has 376 places, 483 transitions, 7315 flow. Second operand 11 states and 162 transitions. [2024-06-27 22:24:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 506 transitions, 8637 flow [2024-06-27 22:24:27,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 506 transitions, 8399 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 22:24:27,480 INFO L231 Difference]: Finished difference. Result has 376 places, 484 transitions, 7176 flow [2024-06-27 22:24:27,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7077, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7176, PETRI_PLACES=376, PETRI_TRANSITIONS=484} [2024-06-27 22:24:27,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-27 22:24:27,480 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 484 transitions, 7176 flow [2024-06-27 22:24:27,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:27,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:27,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:27,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:24:27,481 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:27,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:27,481 INFO L85 PathProgramCache]: Analyzing trace with hash -18143225, now seen corresponding path program 14 times [2024-06-27 22:24:27,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:27,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158852592] [2024-06-27 22:24:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:27,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158852592] [2024-06-27 22:24:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158852592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:29,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:29,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:29,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619990384] [2024-06-27 22:24:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:29,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:29,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:29,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:29,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 484 transitions, 7176 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:29,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:29,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:29,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:30,139 INFO L124 PetriNetUnfolderBase]: 1602/3012 cut-off events. [2024-06-27 22:24:30,139 INFO L125 PetriNetUnfolderBase]: For 188007/188010 co-relation queries the response was YES. [2024-06-27 22:24:30,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22800 conditions, 3012 events. 1602/3012 cut-off events. For 188007/188010 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 19591 event pairs, 493 based on Foata normal form. 3/2876 useless extension candidates. Maximal degree in co-relation 22629. Up to 2599 conditions per place. [2024-06-27 22:24:30,177 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 455 selfloop transitions, 44 changer transitions 0/507 dead transitions. [2024-06-27 22:24:30,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 507 transitions, 8508 flow [2024-06-27 22:24:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 22:24:30,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 22:24:30,178 INFO L175 Difference]: Start difference. First operand has 376 places, 484 transitions, 7176 flow. Second operand 11 states and 163 transitions. [2024-06-27 22:24:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 507 transitions, 8508 flow [2024-06-27 22:24:31,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 507 transitions, 8424 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:31,126 INFO L231 Difference]: Finished difference. Result has 378 places, 485 transitions, 7205 flow [2024-06-27 22:24:31,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7092, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7205, PETRI_PLACES=378, PETRI_TRANSITIONS=485} [2024-06-27 22:24:31,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 22:24:31,127 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 485 transitions, 7205 flow [2024-06-27 22:24:31,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:31,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:31,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:31,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:24:31,127 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:31,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash 625337124, now seen corresponding path program 14 times [2024-06-27 22:24:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132860857] [2024-06-27 22:24:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:32,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132860857] [2024-06-27 22:24:32,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132860857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:32,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:32,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:32,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985967378] [2024-06-27 22:24:32,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:32,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:32,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:32,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 485 transitions, 7205 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:32,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:32,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:32,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:33,756 INFO L124 PetriNetUnfolderBase]: 1608/3021 cut-off events. [2024-06-27 22:24:33,756 INFO L125 PetriNetUnfolderBase]: For 185557/185560 co-relation queries the response was YES. [2024-06-27 22:24:33,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22936 conditions, 3021 events. 1608/3021 cut-off events. For 185557/185560 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 19632 event pairs, 493 based on Foata normal form. 2/2882 useless extension candidates. Maximal degree in co-relation 22764. Up to 2521 conditions per place. [2024-06-27 22:24:33,797 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 429 selfloop transitions, 73 changer transitions 0/510 dead transitions. [2024-06-27 22:24:33,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 510 transitions, 8854 flow [2024-06-27 22:24:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 22:24:33,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:24:33,798 INFO L175 Difference]: Start difference. First operand has 378 places, 485 transitions, 7205 flow. Second operand 11 states and 165 transitions. [2024-06-27 22:24:33,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 510 transitions, 8854 flow [2024-06-27 22:24:34,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 510 transitions, 8756 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:34,849 INFO L231 Difference]: Finished difference. Result has 380 places, 489 transitions, 7366 flow [2024-06-27 22:24:34,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7107, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7366, PETRI_PLACES=380, PETRI_TRANSITIONS=489} [2024-06-27 22:24:34,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-27 22:24:34,850 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 489 transitions, 7366 flow [2024-06-27 22:24:34,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:34,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:34,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:34,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:24:34,850 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:34,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 630843499, now seen corresponding path program 15 times [2024-06-27 22:24:34,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965535266] [2024-06-27 22:24:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:34,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965535266] [2024-06-27 22:24:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965535266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:36,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398587136] [2024-06-27 22:24:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:36,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:36,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 489 transitions, 7366 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:36,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:36,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:36,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:37,528 INFO L124 PetriNetUnfolderBase]: 1625/3061 cut-off events. [2024-06-27 22:24:37,528 INFO L125 PetriNetUnfolderBase]: For 195084/195087 co-relation queries the response was YES. [2024-06-27 22:24:37,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23249 conditions, 3061 events. 1625/3061 cut-off events. For 195084/195087 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20008 event pairs, 493 based on Foata normal form. 3/2921 useless extension candidates. Maximal degree in co-relation 23076. Up to 2662 conditions per place. [2024-06-27 22:24:37,568 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 470 selfloop transitions, 36 changer transitions 0/514 dead transitions. [2024-06-27 22:24:37,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 514 transitions, 8757 flow [2024-06-27 22:24:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 22:24:37,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 22:24:37,569 INFO L175 Difference]: Start difference. First operand has 380 places, 489 transitions, 7366 flow. Second operand 11 states and 163 transitions. [2024-06-27 22:24:37,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 514 transitions, 8757 flow [2024-06-27 22:24:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 514 transitions, 8616 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:38,627 INFO L231 Difference]: Finished difference. Result has 384 places, 490 transitions, 7324 flow [2024-06-27 22:24:38,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7225, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7324, PETRI_PLACES=384, PETRI_TRANSITIONS=490} [2024-06-27 22:24:38,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 22:24:38,628 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 490 transitions, 7324 flow [2024-06-27 22:24:38,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:38,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:38,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:24:38,628 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 630849234, now seen corresponding path program 15 times [2024-06-27 22:24:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958182958] [2024-06-27 22:24:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:40,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958182958] [2024-06-27 22:24:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958182958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:40,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831428574] [2024-06-27 22:24:40,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:40,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:40,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:40,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 490 transitions, 7324 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:40,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:40,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:40,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:41,113 INFO L124 PetriNetUnfolderBase]: 1631/3070 cut-off events. [2024-06-27 22:24:41,113 INFO L125 PetriNetUnfolderBase]: For 191406/191409 co-relation queries the response was YES. [2024-06-27 22:24:41,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23287 conditions, 3070 events. 1631/3070 cut-off events. For 191406/191409 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20060 event pairs, 496 based on Foata normal form. 2/2927 useless extension candidates. Maximal degree in co-relation 23112. Up to 2634 conditions per place. [2024-06-27 22:24:41,156 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 455 selfloop transitions, 56 changer transitions 0/519 dead transitions. [2024-06-27 22:24:41,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 519 transitions, 8862 flow [2024-06-27 22:24:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:24:41,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:24:41,157 INFO L175 Difference]: Start difference. First operand has 384 places, 490 transitions, 7324 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:24:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 519 transitions, 8862 flow [2024-06-27 22:24:42,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 519 transitions, 8778 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:42,221 INFO L231 Difference]: Finished difference. Result has 385 places, 494 transitions, 7426 flow [2024-06-27 22:24:42,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7426, PETRI_PLACES=385, PETRI_TRANSITIONS=494} [2024-06-27 22:24:42,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 22:24:42,222 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 494 transitions, 7426 flow [2024-06-27 22:24:42,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:42,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:42,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:42,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:24:42,222 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:42,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash 282354504, now seen corresponding path program 16 times [2024-06-27 22:24:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:42,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387031964] [2024-06-27 22:24:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387031964] [2024-06-27 22:24:43,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387031964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:43,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:43,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:43,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390467221] [2024-06-27 22:24:43,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:43,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:43,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:43,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 494 transitions, 7426 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:43,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:43,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:43,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:44,778 INFO L124 PetriNetUnfolderBase]: 1629/3067 cut-off events. [2024-06-27 22:24:44,778 INFO L125 PetriNetUnfolderBase]: For 187875/187878 co-relation queries the response was YES. [2024-06-27 22:24:44,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23138 conditions, 3067 events. 1629/3067 cut-off events. For 187875/187878 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20069 event pairs, 493 based on Foata normal form. 2/2924 useless extension candidates. Maximal degree in co-relation 22962. Up to 2631 conditions per place. [2024-06-27 22:24:44,822 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 451 selfloop transitions, 58 changer transitions 0/517 dead transitions. [2024-06-27 22:24:44,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 517 transitions, 8839 flow [2024-06-27 22:24:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 22:24:44,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 22:24:44,823 INFO L175 Difference]: Start difference. First operand has 385 places, 494 transitions, 7426 flow. Second operand 11 states and 163 transitions. [2024-06-27 22:24:44,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 517 transitions, 8839 flow [2024-06-27 22:24:45,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 517 transitions, 8691 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:45,904 INFO L231 Difference]: Finished difference. Result has 389 places, 494 transitions, 7400 flow [2024-06-27 22:24:45,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7278, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7400, PETRI_PLACES=389, PETRI_TRANSITIONS=494} [2024-06-27 22:24:45,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 22:24:45,904 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 494 transitions, 7400 flow [2024-06-27 22:24:45,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:45,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:45,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:45,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:24:45,905 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:45,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:45,905 INFO L85 PathProgramCache]: Analyzing trace with hash -27923528, now seen corresponding path program 17 times [2024-06-27 22:24:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615962382] [2024-06-27 22:24:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615962382] [2024-06-27 22:24:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615962382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:47,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:47,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173972000] [2024-06-27 22:24:47,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:47,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:47,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:47,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 494 transitions, 7400 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:47,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:47,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:47,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:48,479 INFO L124 PetriNetUnfolderBase]: 1635/3076 cut-off events. [2024-06-27 22:24:48,479 INFO L125 PetriNetUnfolderBase]: For 190329/190332 co-relation queries the response was YES. [2024-06-27 22:24:48,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23205 conditions, 3076 events. 1635/3076 cut-off events. For 190329/190332 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20090 event pairs, 490 based on Foata normal form. 2/2932 useless extension candidates. Maximal degree in co-relation 23028. Up to 2722 conditions per place. [2024-06-27 22:24:48,521 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 484 selfloop transitions, 22 changer transitions 0/514 dead transitions. [2024-06-27 22:24:48,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 514 transitions, 8714 flow [2024-06-27 22:24:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-27 22:24:48,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832923832923833 [2024-06-27 22:24:48,522 INFO L175 Difference]: Start difference. First operand has 389 places, 494 transitions, 7400 flow. Second operand 11 states and 156 transitions. [2024-06-27 22:24:48,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 514 transitions, 8714 flow [2024-06-27 22:24:49,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 514 transitions, 8572 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:24:49,572 INFO L231 Difference]: Finished difference. Result has 391 places, 498 transitions, 7394 flow [2024-06-27 22:24:49,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7262, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7394, PETRI_PLACES=391, PETRI_TRANSITIONS=498} [2024-06-27 22:24:49,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-27 22:24:49,573 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 498 transitions, 7394 flow [2024-06-27 22:24:49,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:49,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:49,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:49,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:24:49,573 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:49,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:49,573 INFO L85 PathProgramCache]: Analyzing trace with hash 259230929, now seen corresponding path program 6 times [2024-06-27 22:24:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:49,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919513473] [2024-06-27 22:24:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:49,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919513473] [2024-06-27 22:24:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919513473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888807875] [2024-06-27 22:24:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:51,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:51,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:51,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:51,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 498 transitions, 7394 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:51,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:51,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:51,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:52,157 INFO L124 PetriNetUnfolderBase]: 1631/3070 cut-off events. [2024-06-27 22:24:52,157 INFO L125 PetriNetUnfolderBase]: For 186674/186677 co-relation queries the response was YES. [2024-06-27 22:24:52,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22889 conditions, 3070 events. 1631/3070 cut-off events. For 186674/186677 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20075 event pairs, 490 based on Foata normal form. 3/2927 useless extension candidates. Maximal degree in co-relation 22710. Up to 2702 conditions per place. [2024-06-27 22:24:52,204 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 488 selfloop transitions, 25 changer transitions 0/521 dead transitions. [2024-06-27 22:24:52,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 521 transitions, 8816 flow [2024-06-27 22:24:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 22:24:52,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:24:52,205 INFO L175 Difference]: Start difference. First operand has 391 places, 498 transitions, 7394 flow. Second operand 10 states and 150 transitions. [2024-06-27 22:24:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 521 transitions, 8816 flow [2024-06-27 22:24:53,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 521 transitions, 8750 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:53,446 INFO L231 Difference]: Finished difference. Result has 393 places, 503 transitions, 7501 flow [2024-06-27 22:24:53,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7501, PETRI_PLACES=393, PETRI_TRANSITIONS=503} [2024-06-27 22:24:53,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-27 22:24:53,446 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 503 transitions, 7501 flow [2024-06-27 22:24:53,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:53,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:53,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:53,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:24:53,447 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:53,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -35073368, now seen corresponding path program 18 times [2024-06-27 22:24:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074925295] [2024-06-27 22:24:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:53,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:54,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:54,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074925295] [2024-06-27 22:24:54,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074925295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:54,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:54,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368944062] [2024-06-27 22:24:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:54,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:54,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:54,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:54,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:54,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 503 transitions, 7501 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:54,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:54,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:54,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:55,874 INFO L124 PetriNetUnfolderBase]: 1637/3079 cut-off events. [2024-06-27 22:24:55,874 INFO L125 PetriNetUnfolderBase]: For 183252/183255 co-relation queries the response was YES. [2024-06-27 22:24:55,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23148 conditions, 3079 events. 1637/3079 cut-off events. For 183252/183255 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20132 event pairs, 492 based on Foata normal form. 2/2934 useless extension candidates. Maximal degree in co-relation 22968. Up to 2696 conditions per place. [2024-06-27 22:24:55,922 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 482 selfloop transitions, 37 changer transitions 0/527 dead transitions. [2024-06-27 22:24:55,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 527 transitions, 8943 flow [2024-06-27 22:24:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 22:24:55,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 22:24:55,924 INFO L175 Difference]: Start difference. First operand has 393 places, 503 transitions, 7501 flow. Second operand 10 states and 151 transitions. [2024-06-27 22:24:55,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 527 transitions, 8943 flow [2024-06-27 22:24:57,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 527 transitions, 8836 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:57,006 INFO L231 Difference]: Finished difference. Result has 396 places, 507 transitions, 7554 flow [2024-06-27 22:24:57,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7394, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7554, PETRI_PLACES=396, PETRI_TRANSITIONS=507} [2024-06-27 22:24:57,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-27 22:24:57,006 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 507 transitions, 7554 flow [2024-06-27 22:24:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:57,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:57,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:24:57,007 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:57,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -35275178, now seen corresponding path program 19 times [2024-06-27 22:24:57,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:57,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789452918] [2024-06-27 22:24:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:57,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:58,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789452918] [2024-06-27 22:24:58,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789452918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:58,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723907772] [2024-06-27 22:24:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:58,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:24:58,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 507 transitions, 7554 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:58,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:58,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:24:58,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:59,495 INFO L124 PetriNetUnfolderBase]: 1643/3088 cut-off events. [2024-06-27 22:24:59,496 INFO L125 PetriNetUnfolderBase]: For 186185/186188 co-relation queries the response was YES. [2024-06-27 22:24:59,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23233 conditions, 3088 events. 1643/3088 cut-off events. For 186185/186188 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20170 event pairs, 495 based on Foata normal form. 2/2942 useless extension candidates. Maximal degree in co-relation 23052. Up to 2705 conditions per place. [2024-06-27 22:24:59,560 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 480 selfloop transitions, 39 changer transitions 0/527 dead transitions. [2024-06-27 22:24:59,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 527 transitions, 8922 flow [2024-06-27 22:24:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 22:24:59,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:24:59,562 INFO L175 Difference]: Start difference. First operand has 396 places, 507 transitions, 7554 flow. Second operand 10 states and 150 transitions. [2024-06-27 22:24:59,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 527 transitions, 8922 flow [2024-06-27 22:25:00,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 527 transitions, 8785 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:00,855 INFO L231 Difference]: Finished difference. Result has 398 places, 509 transitions, 7557 flow [2024-06-27 22:25:00,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7417, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7557, PETRI_PLACES=398, PETRI_TRANSITIONS=509} [2024-06-27 22:25:00,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 22:25:00,855 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 509 transitions, 7557 flow [2024-06-27 22:25:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:00,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:00,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:25:00,855 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:00,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash -35280758, now seen corresponding path program 20 times [2024-06-27 22:25:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025670057] [2024-06-27 22:25:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:02,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:02,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025670057] [2024-06-27 22:25:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025670057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:02,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:02,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819178154] [2024-06-27 22:25:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:02,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:25:02,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 509 transitions, 7557 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:02,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:02,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:25:02,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:03,396 INFO L124 PetriNetUnfolderBase]: 1641/3085 cut-off events. [2024-06-27 22:25:03,397 INFO L125 PetriNetUnfolderBase]: For 181909/181912 co-relation queries the response was YES. [2024-06-27 22:25:03,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23045 conditions, 3085 events. 1641/3085 cut-off events. For 181909/181912 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20173 event pairs, 492 based on Foata normal form. 2/2939 useless extension candidates. Maximal degree in co-relation 22864. Up to 2679 conditions per place. [2024-06-27 22:25:03,444 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 474 selfloop transitions, 45 changer transitions 0/527 dead transitions. [2024-06-27 22:25:03,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 527 transitions, 8874 flow [2024-06-27 22:25:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 22:25:03,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 22:25:03,445 INFO L175 Difference]: Start difference. First operand has 398 places, 509 transitions, 7557 flow. Second operand 10 states and 151 transitions. [2024-06-27 22:25:03,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 527 transitions, 8874 flow [2024-06-27 22:25:04,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 527 transitions, 8705 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:04,579 INFO L231 Difference]: Finished difference. Result has 400 places, 509 transitions, 7483 flow [2024-06-27 22:25:04,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7388, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7483, PETRI_PLACES=400, PETRI_TRANSITIONS=509} [2024-06-27 22:25:04,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-27 22:25:04,580 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 509 transitions, 7483 flow [2024-06-27 22:25:04,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:04,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:04,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:04,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:25:04,580 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:04,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -35280913, now seen corresponding path program 16 times [2024-06-27 22:25:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:04,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254109993] [2024-06-27 22:25:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254109993] [2024-06-27 22:25:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254109993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092256707] [2024-06-27 22:25:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:06,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:25:06,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 509 transitions, 7483 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:06,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:06,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:25:06,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:07,335 INFO L124 PetriNetUnfolderBase]: 1638/3080 cut-off events. [2024-06-27 22:25:07,335 INFO L125 PetriNetUnfolderBase]: For 177026/177029 co-relation queries the response was YES. [2024-06-27 22:25:07,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22715 conditions, 3080 events. 1638/3080 cut-off events. For 177026/177029 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20130 event pairs, 488 based on Foata normal form. 3/2936 useless extension candidates. Maximal degree in co-relation 22533. Up to 2710 conditions per place. [2024-06-27 22:25:07,382 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 500 selfloop transitions, 21 changer transitions 0/529 dead transitions. [2024-06-27 22:25:07,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 529 transitions, 8790 flow [2024-06-27 22:25:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-27 22:25:07,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906633906633907 [2024-06-27 22:25:07,384 INFO L175 Difference]: Start difference. First operand has 400 places, 509 transitions, 7483 flow. Second operand 11 states and 159 transitions. [2024-06-27 22:25:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 529 transitions, 8790 flow [2024-06-27 22:25:08,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 529 transitions, 8513 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-27 22:25:08,460 INFO L231 Difference]: Finished difference. Result has 399 places, 509 transitions, 7252 flow [2024-06-27 22:25:08,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7252, PETRI_PLACES=399, PETRI_TRANSITIONS=509} [2024-06-27 22:25:08,461 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 22:25:08,461 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 509 transitions, 7252 flow [2024-06-27 22:25:08,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:08,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:08,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:08,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:25:08,461 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:08,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1971288099, now seen corresponding path program 1 times [2024-06-27 22:25:08,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665047344] [2024-06-27 22:25:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:10,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:10,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665047344] [2024-06-27 22:25:10,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665047344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:10,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:25:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947177437] [2024-06-27 22:25:10,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:25:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:25:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:25:10,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:10,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 509 transitions, 7252 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 22:25:10,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:10,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:10,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:11,639 INFO L124 PetriNetUnfolderBase]: 1620/3141 cut-off events. [2024-06-27 22:25:11,639 INFO L125 PetriNetUnfolderBase]: For 190334/190335 co-relation queries the response was YES. [2024-06-27 22:25:11,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22155 conditions, 3141 events. 1620/3141 cut-off events. For 190334/190335 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 21082 event pairs, 199 based on Foata normal form. 3/3003 useless extension candidates. Maximal degree in co-relation 21975. Up to 1571 conditions per place. [2024-06-27 22:25:11,688 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 350 selfloop transitions, 96 changer transitions 0/558 dead transitions. [2024-06-27 22:25:11,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 558 transitions, 8863 flow [2024-06-27 22:25:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 22:25:11,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2024-06-27 22:25:11,689 INFO L175 Difference]: Start difference. First operand has 399 places, 509 transitions, 7252 flow. Second operand 12 states and 223 transitions. [2024-06-27 22:25:11,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 558 transitions, 8863 flow [2024-06-27 22:25:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 558 transitions, 8700 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 22:25:13,119 INFO L231 Difference]: Finished difference. Result has 402 places, 520 transitions, 7528 flow [2024-06-27 22:25:13,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7089, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7528, PETRI_PLACES=402, PETRI_TRANSITIONS=520} [2024-06-27 22:25:13,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 22:25:13,120 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 520 transitions, 7528 flow [2024-06-27 22:25:13,120 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 22:25:13,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:13,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:13,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:25:13,120 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:13,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1795752951, now seen corresponding path program 1 times [2024-06-27 22:25:13,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:13,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847218029] [2024-06-27 22:25:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:13,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:14,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:14,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847218029] [2024-06-27 22:25:14,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847218029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:14,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:14,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:14,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263348147] [2024-06-27 22:25:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:14,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:14,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:15,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:25:15,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 520 transitions, 7528 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:15,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:15,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:25:15,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:16,464 INFO L124 PetriNetUnfolderBase]: 1727/3230 cut-off events. [2024-06-27 22:25:16,464 INFO L125 PetriNetUnfolderBase]: For 217399/217402 co-relation queries the response was YES. [2024-06-27 22:25:16,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24468 conditions, 3230 events. 1727/3230 cut-off events. For 217399/217402 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 21255 event pairs, 359 based on Foata normal form. 5/3078 useless extension candidates. Maximal degree in co-relation 24285. Up to 2580 conditions per place. [2024-06-27 22:25:16,512 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 454 selfloop transitions, 104 changer transitions 0/566 dead transitions. [2024-06-27 22:25:16,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 566 transitions, 9559 flow [2024-06-27 22:25:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:25:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:25:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-27 22:25:16,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386694386694387 [2024-06-27 22:25:16,513 INFO L175 Difference]: Start difference. First operand has 402 places, 520 transitions, 7528 flow. Second operand 13 states and 211 transitions. [2024-06-27 22:25:16,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 566 transitions, 9559 flow [2024-06-27 22:25:17,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 566 transitions, 9408 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:17,890 INFO L231 Difference]: Finished difference. Result has 408 places, 533 transitions, 7952 flow [2024-06-27 22:25:17,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7385, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7952, PETRI_PLACES=408, PETRI_TRANSITIONS=533} [2024-06-27 22:25:17,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 22:25:17,891 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 533 transitions, 7952 flow [2024-06-27 22:25:17,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:17,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:17,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:17,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:25:17,891 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:17,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:17,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2016084731, now seen corresponding path program 2 times [2024-06-27 22:25:17,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:17,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780287832] [2024-06-27 22:25:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:17,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:19,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:19,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780287832] [2024-06-27 22:25:19,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780287832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747314297] [2024-06-27 22:25:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:19,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:19,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:19,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 533 transitions, 7952 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:19,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:19,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:19,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:20,999 INFO L124 PetriNetUnfolderBase]: 1678/3274 cut-off events. [2024-06-27 22:25:20,999 INFO L125 PetriNetUnfolderBase]: For 284696/284781 co-relation queries the response was YES. [2024-06-27 22:25:21,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24675 conditions, 3274 events. 1678/3274 cut-off events. For 284696/284781 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 22473 event pairs, 269 based on Foata normal form. 4/3049 useless extension candidates. Maximal degree in co-relation 24490. Up to 1705 conditions per place. [2024-06-27 22:25:21,047 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 436 selfloop transitions, 114 changer transitions 0/587 dead transitions. [2024-06-27 22:25:21,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 587 transitions, 10041 flow [2024-06-27 22:25:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 22:25:21,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 22:25:21,048 INFO L175 Difference]: Start difference. First operand has 408 places, 533 transitions, 7952 flow. Second operand 11 states and 202 transitions. [2024-06-27 22:25:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 587 transitions, 10041 flow [2024-06-27 22:25:22,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 587 transitions, 9721 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:22,488 INFO L231 Difference]: Finished difference. Result has 413 places, 540 transitions, 8130 flow [2024-06-27 22:25:22,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8130, PETRI_PLACES=413, PETRI_TRANSITIONS=540} [2024-06-27 22:25:22,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 22:25:22,489 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 540 transitions, 8130 flow [2024-06-27 22:25:22,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:22,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:22,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:22,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:25:22,490 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:22,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1200365733, now seen corresponding path program 2 times [2024-06-27 22:25:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650616207] [2024-06-27 22:25:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:24,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:24,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650616207] [2024-06-27 22:25:24,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650616207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:24,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:24,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:24,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727463501] [2024-06-27 22:25:24,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:24,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:24,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:24,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:24,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:25:24,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 540 transitions, 8130 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:24,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:24,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:25:24,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:26,032 INFO L124 PetriNetUnfolderBase]: 2023/3770 cut-off events. [2024-06-27 22:25:26,032 INFO L125 PetriNetUnfolderBase]: For 338897/338898 co-relation queries the response was YES. [2024-06-27 22:25:26,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30811 conditions, 3770 events. 2023/3770 cut-off events. For 338897/338898 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 25321 event pairs, 475 based on Foata normal form. 3/3578 useless extension candidates. Maximal degree in co-relation 30624. Up to 3120 conditions per place. [2024-06-27 22:25:26,093 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 505 selfloop transitions, 124 changer transitions 0/637 dead transitions. [2024-06-27 22:25:26,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 637 transitions, 10913 flow [2024-06-27 22:25:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:25:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:25:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 221 transitions. [2024-06-27 22:25:26,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266409266409266 [2024-06-27 22:25:26,094 INFO L175 Difference]: Start difference. First operand has 413 places, 540 transitions, 8130 flow. Second operand 14 states and 221 transitions. [2024-06-27 22:25:26,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 637 transitions, 10913 flow [2024-06-27 22:25:27,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 637 transitions, 10765 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:27,884 INFO L231 Difference]: Finished difference. Result has 424 places, 588 transitions, 9188 flow [2024-06-27 22:25:27,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7991, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9188, PETRI_PLACES=424, PETRI_TRANSITIONS=588} [2024-06-27 22:25:27,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 22:25:27,884 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 588 transitions, 9188 flow [2024-06-27 22:25:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:27,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:27,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:27,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:25:27,885 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:27,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash 528496345, now seen corresponding path program 3 times [2024-06-27 22:25:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773442970] [2024-06-27 22:25:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773442970] [2024-06-27 22:25:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773442970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:29,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037855431] [2024-06-27 22:25:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:29,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:29,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:29,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:30,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:30,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 588 transitions, 9188 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:30,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:30,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:30,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:31,380 INFO L124 PetriNetUnfolderBase]: 1914/3668 cut-off events. [2024-06-27 22:25:31,380 INFO L125 PetriNetUnfolderBase]: For 341704/341806 co-relation queries the response was YES. [2024-06-27 22:25:31,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28853 conditions, 3668 events. 1914/3668 cut-off events. For 341704/341806 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25450 event pairs, 409 based on Foata normal form. 9/3427 useless extension candidates. Maximal degree in co-relation 28660. Up to 2668 conditions per place. [2024-06-27 22:25:31,441 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 442 selfloop transitions, 150 changer transitions 0/629 dead transitions. [2024-06-27 22:25:31,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 629 transitions, 11128 flow [2024-06-27 22:25:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-27 22:25:31,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-27 22:25:31,442 INFO L175 Difference]: Start difference. First operand has 424 places, 588 transitions, 9188 flow. Second operand 12 states and 202 transitions. [2024-06-27 22:25:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 629 transitions, 11128 flow [2024-06-27 22:25:33,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 629 transitions, 10982 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:33,448 INFO L231 Difference]: Finished difference. Result has 429 places, 594 transitions, 9420 flow [2024-06-27 22:25:33,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9042, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9420, PETRI_PLACES=429, PETRI_TRANSITIONS=594} [2024-06-27 22:25:33,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-27 22:25:33,449 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 594 transitions, 9420 flow [2024-06-27 22:25:33,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:33,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:33,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:25:33,450 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:33,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:33,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1205192619, now seen corresponding path program 4 times [2024-06-27 22:25:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472103658] [2024-06-27 22:25:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472103658] [2024-06-27 22:25:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472103658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62501679] [2024-06-27 22:25:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:35,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:35,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:35,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 594 transitions, 9420 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:35,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:35,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:35,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:36,857 INFO L124 PetriNetUnfolderBase]: 1941/3727 cut-off events. [2024-06-27 22:25:36,858 INFO L125 PetriNetUnfolderBase]: For 347399/347501 co-relation queries the response was YES. [2024-06-27 22:25:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29537 conditions, 3727 events. 1941/3727 cut-off events. For 347399/347501 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26029 event pairs, 388 based on Foata normal form. 9/3479 useless extension candidates. Maximal degree in co-relation 29342. Up to 2545 conditions per place. [2024-06-27 22:25:36,919 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 452 selfloop transitions, 150 changer transitions 0/639 dead transitions. [2024-06-27 22:25:36,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 639 transitions, 11446 flow [2024-06-27 22:25:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-27 22:25:36,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:25:36,921 INFO L175 Difference]: Start difference. First operand has 429 places, 594 transitions, 9420 flow. Second operand 12 states and 207 transitions. [2024-06-27 22:25:36,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 639 transitions, 11446 flow [2024-06-27 22:25:38,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 639 transitions, 11223 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:38,968 INFO L231 Difference]: Finished difference. Result has 433 places, 596 transitions, 9535 flow [2024-06-27 22:25:38,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9197, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9535, PETRI_PLACES=433, PETRI_TRANSITIONS=596} [2024-06-27 22:25:38,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 22:25:38,969 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 596 transitions, 9535 flow [2024-06-27 22:25:38,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:38,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:38,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:38,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:25:38,970 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:38,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:38,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2098767715, now seen corresponding path program 5 times [2024-06-27 22:25:38,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:38,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880458989] [2024-06-27 22:25:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:38,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:40,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880458989] [2024-06-27 22:25:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880458989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:40,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:40,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:40,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523187426] [2024-06-27 22:25:40,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:40,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:40,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:40,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:40,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 596 transitions, 9535 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:40,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:40,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:40,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:42,226 INFO L124 PetriNetUnfolderBase]: 1932/3717 cut-off events. [2024-06-27 22:25:42,226 INFO L125 PetriNetUnfolderBase]: For 336788/336891 co-relation queries the response was YES. [2024-06-27 22:25:42,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29796 conditions, 3717 events. 1932/3717 cut-off events. For 336788/336891 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 25987 event pairs, 472 based on Foata normal form. 9/3478 useless extension candidates. Maximal degree in co-relation 29599. Up to 2888 conditions per place. [2024-06-27 22:25:42,289 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 450 selfloop transitions, 132 changer transitions 0/619 dead transitions. [2024-06-27 22:25:42,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 619 transitions, 10805 flow [2024-06-27 22:25:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 22:25:42,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 22:25:42,290 INFO L175 Difference]: Start difference. First operand has 433 places, 596 transitions, 9535 flow. Second operand 12 states and 191 transitions. [2024-06-27 22:25:42,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 619 transitions, 10805 flow [2024-06-27 22:25:44,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 619 transitions, 10505 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 22:25:44,390 INFO L231 Difference]: Finished difference. Result has 435 places, 596 transitions, 9510 flow [2024-06-27 22:25:44,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9235, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9510, PETRI_PLACES=435, PETRI_TRANSITIONS=596} [2024-06-27 22:25:44,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 22:25:44,391 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 596 transitions, 9510 flow [2024-06-27 22:25:44,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:44,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:44,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:44,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:25:44,392 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:44,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:44,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2064661795, now seen corresponding path program 6 times [2024-06-27 22:25:44,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:44,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001108871] [2024-06-27 22:25:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:44,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:46,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:46,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001108871] [2024-06-27 22:25:46,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001108871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:46,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:46,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:46,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266161482] [2024-06-27 22:25:46,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:46,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:46,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:46,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:46,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:46,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:46,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 596 transitions, 9510 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:46,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:46,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:47,693 INFO L124 PetriNetUnfolderBase]: 1962/3761 cut-off events. [2024-06-27 22:25:47,693 INFO L125 PetriNetUnfolderBase]: For 340767/340866 co-relation queries the response was YES. [2024-06-27 22:25:47,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29917 conditions, 3761 events. 1962/3761 cut-off events. For 340767/340866 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26289 event pairs, 460 based on Foata normal form. 7/3509 useless extension candidates. Maximal degree in co-relation 29719. Up to 2778 conditions per place. [2024-06-27 22:25:47,756 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 501 selfloop transitions, 92 changer transitions 0/630 dead transitions. [2024-06-27 22:25:47,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 630 transitions, 11204 flow [2024-06-27 22:25:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:25:47,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:25:47,757 INFO L175 Difference]: Start difference. First operand has 435 places, 596 transitions, 9510 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:25:47,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 630 transitions, 11204 flow [2024-06-27 22:25:49,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 630 transitions, 10931 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:25:49,659 INFO L231 Difference]: Finished difference. Result has 434 places, 598 transitions, 9457 flow [2024-06-27 22:25:49,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9237, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9457, PETRI_PLACES=434, PETRI_TRANSITIONS=598} [2024-06-27 22:25:49,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-27 22:25:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 598 transitions, 9457 flow [2024-06-27 22:25:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:25:49,660 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1915772329, now seen corresponding path program 3 times [2024-06-27 22:25:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844863856] [2024-06-27 22:25:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:51,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844863856] [2024-06-27 22:25:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844863856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:51,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397489440] [2024-06-27 22:25:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:51,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:51,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:51,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:51,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:51,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 598 transitions, 9457 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:51,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:51,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:51,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:53,229 INFO L124 PetriNetUnfolderBase]: 1953/3756 cut-off events. [2024-06-27 22:25:53,229 INFO L125 PetriNetUnfolderBase]: For 333231/333329 co-relation queries the response was YES. [2024-06-27 22:25:53,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29256 conditions, 3756 events. 1953/3756 cut-off events. For 333231/333329 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26328 event pairs, 481 based on Foata normal form. 9/3496 useless extension candidates. Maximal degree in co-relation 29058. Up to 3056 conditions per place. [2024-06-27 22:25:53,281 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 482 selfloop transitions, 95 changer transitions 0/614 dead transitions. [2024-06-27 22:25:53,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 614 transitions, 10661 flow [2024-06-27 22:25:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 22:25:53,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 22:25:53,282 INFO L175 Difference]: Start difference. First operand has 434 places, 598 transitions, 9457 flow. Second operand 11 states and 169 transitions. [2024-06-27 22:25:53,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 614 transitions, 10661 flow [2024-06-27 22:25:55,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 614 transitions, 10295 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:55,087 INFO L231 Difference]: Finished difference. Result has 436 places, 598 transitions, 9299 flow [2024-06-27 22:25:55,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9091, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9299, PETRI_PLACES=436, PETRI_TRANSITIONS=598} [2024-06-27 22:25:55,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-27 22:25:55,087 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 598 transitions, 9299 flow [2024-06-27 22:25:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:55,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:55,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:55,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:25:55,088 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:55,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2094034915, now seen corresponding path program 7 times [2024-06-27 22:25:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210341254] [2024-06-27 22:25:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:56,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:56,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210341254] [2024-06-27 22:25:56,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210341254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:56,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:56,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:56,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321551029] [2024-06-27 22:25:56,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:56,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:56,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:56,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:56,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:56,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:56,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 598 transitions, 9299 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:56,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:56,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:56,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:58,193 INFO L124 PetriNetUnfolderBase]: 1899/3632 cut-off events. [2024-06-27 22:25:58,193 INFO L125 PetriNetUnfolderBase]: For 244881/244980 co-relation queries the response was YES. [2024-06-27 22:25:58,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26944 conditions, 3632 events. 1899/3632 cut-off events. For 244881/244980 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 25230 event pairs, 436 based on Foata normal form. 7/3387 useless extension candidates. Maximal degree in co-relation 26745. Up to 2900 conditions per place. [2024-06-27 22:25:58,250 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 491 selfloop transitions, 91 changer transitions 0/619 dead transitions. [2024-06-27 22:25:58,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 619 transitions, 10577 flow [2024-06-27 22:25:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 22:25:58,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 22:25:58,251 INFO L175 Difference]: Start difference. First operand has 436 places, 598 transitions, 9299 flow. Second operand 11 states and 174 transitions. [2024-06-27 22:25:58,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 619 transitions, 10577 flow [2024-06-27 22:26:00,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 619 transitions, 10318 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:00,025 INFO L231 Difference]: Finished difference. Result has 438 places, 600 transitions, 9260 flow [2024-06-27 22:26:00,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9040, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9260, PETRI_PLACES=438, PETRI_TRANSITIONS=600} [2024-06-27 22:26:00,026 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-27 22:26:00,026 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 600 transitions, 9260 flow [2024-06-27 22:26:00,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:00,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:00,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:00,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:26:00,026 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:00,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2059834909, now seen corresponding path program 4 times [2024-06-27 22:26:00,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352268078] [2024-06-27 22:26:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:01,901 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 22:26:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352268078] [2024-06-27 22:26:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352268078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:01,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346499058] [2024-06-27 22:26:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:01,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:01,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:01,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:02,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:02,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 600 transitions, 9260 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:02,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:02,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:02,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:03,334 INFO L124 PetriNetUnfolderBase]: 1952/3712 cut-off events. [2024-06-27 22:26:03,334 INFO L125 PetriNetUnfolderBase]: For 282956/283072 co-relation queries the response was YES. [2024-06-27 22:26:03,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28138 conditions, 3712 events. 1952/3712 cut-off events. For 282956/283072 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 25764 event pairs, 415 based on Foata normal form. 9/3452 useless extension candidates. Maximal degree in co-relation 27938. Up to 2888 conditions per place. [2024-06-27 22:26:03,394 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 474 selfloop transitions, 119 changer transitions 0/630 dead transitions. [2024-06-27 22:26:03,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 630 transitions, 11034 flow [2024-06-27 22:26:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:26:03,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:26:03,395 INFO L175 Difference]: Start difference. First operand has 438 places, 600 transitions, 9260 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:26:03,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 630 transitions, 11034 flow [2024-06-27 22:26:05,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 630 transitions, 10854 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:05,464 INFO L231 Difference]: Finished difference. Result has 440 places, 612 transitions, 9618 flow [2024-06-27 22:26:05,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9080, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9618, PETRI_PLACES=440, PETRI_TRANSITIONS=612} [2024-06-27 22:26:05,465 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 22:26:05,465 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 612 transitions, 9618 flow [2024-06-27 22:26:05,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:05,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:05,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:05,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:26:05,465 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:05,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1915950145, now seen corresponding path program 8 times [2024-06-27 22:26:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:05,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147952000] [2024-06-27 22:26:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147952000] [2024-06-27 22:26:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147952000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:07,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:07,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798903644] [2024-06-27 22:26:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:07,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:07,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 612 transitions, 9618 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:07,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:07,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:07,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:08,653 INFO L124 PetriNetUnfolderBase]: 1977/3759 cut-off events. [2024-06-27 22:26:08,654 INFO L125 PetriNetUnfolderBase]: For 273258/273375 co-relation queries the response was YES. [2024-06-27 22:26:08,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28575 conditions, 3759 events. 1977/3759 cut-off events. For 273258/273375 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 26173 event pairs, 452 based on Foata normal form. 7/3488 useless extension candidates. Maximal degree in co-relation 28374. Up to 3078 conditions per place. [2024-06-27 22:26:08,717 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 517 selfloop transitions, 79 changer transitions 0/633 dead transitions. [2024-06-27 22:26:08,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 633 transitions, 10928 flow [2024-06-27 22:26:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:26:08,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 22:26:08,718 INFO L175 Difference]: Start difference. First operand has 440 places, 612 transitions, 9618 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:26:08,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 633 transitions, 10928 flow [2024-06-27 22:26:10,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 633 transitions, 10742 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:10,742 INFO L231 Difference]: Finished difference. Result has 444 places, 614 transitions, 9632 flow [2024-06-27 22:26:10,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9432, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9632, PETRI_PLACES=444, PETRI_TRANSITIONS=614} [2024-06-27 22:26:10,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 22:26:10,743 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 614 transitions, 9632 flow [2024-06-27 22:26:10,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:10,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:10,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:26:10,743 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:10,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2094039565, now seen corresponding path program 9 times [2024-06-27 22:26:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137432132] [2024-06-27 22:26:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:12,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137432132] [2024-06-27 22:26:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137432132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:12,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:12,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:12,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866383641] [2024-06-27 22:26:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:12,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:12,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:12,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 614 transitions, 9632 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:12,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:12,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:12,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:14,113 INFO L124 PetriNetUnfolderBase]: 2000/3810 cut-off events. [2024-06-27 22:26:14,113 INFO L125 PetriNetUnfolderBase]: For 274960/275077 co-relation queries the response was YES. [2024-06-27 22:26:14,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28868 conditions, 3810 events. 2000/3810 cut-off events. For 274960/275077 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 26655 event pairs, 441 based on Foata normal form. 7/3546 useless extension candidates. Maximal degree in co-relation 28665. Up to 2983 conditions per place. [2024-06-27 22:26:14,168 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 511 selfloop transitions, 93 changer transitions 0/641 dead transitions. [2024-06-27 22:26:14,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 641 transitions, 11034 flow [2024-06-27 22:26:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:26:14,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:26:14,169 INFO L175 Difference]: Start difference. First operand has 444 places, 614 transitions, 9632 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:26:14,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 641 transitions, 11034 flow [2024-06-27 22:26:16,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 641 transitions, 10874 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:16,148 INFO L231 Difference]: Finished difference. Result has 446 places, 616 transitions, 9702 flow [2024-06-27 22:26:16,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9472, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9702, PETRI_PLACES=446, PETRI_TRANSITIONS=616} [2024-06-27 22:26:16,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-27 22:26:16,149 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 616 transitions, 9702 flow [2024-06-27 22:26:16,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:16,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:16,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:16,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:26:16,149 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:16,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:16,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1921492015, now seen corresponding path program 10 times [2024-06-27 22:26:16,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938323634] [2024-06-27 22:26:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:18,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938323634] [2024-06-27 22:26:18,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938323634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:18,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:18,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258884724] [2024-06-27 22:26:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:18,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:18,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:18,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 616 transitions, 9702 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:18,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:18,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:18,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:19,631 INFO L124 PetriNetUnfolderBase]: 2023/3856 cut-off events. [2024-06-27 22:26:19,632 INFO L125 PetriNetUnfolderBase]: For 280355/280472 co-relation queries the response was YES. [2024-06-27 22:26:19,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29292 conditions, 3856 events. 2023/3856 cut-off events. For 280355/280472 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 27080 event pairs, 452 based on Foata normal form. 7/3582 useless extension candidates. Maximal degree in co-relation 29088. Up to 3024 conditions per place. [2024-06-27 22:26:19,693 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 520 selfloop transitions, 87 changer transitions 0/644 dead transitions. [2024-06-27 22:26:19,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 644 transitions, 11370 flow [2024-06-27 22:26:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:26:19,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:26:19,694 INFO L175 Difference]: Start difference. First operand has 446 places, 616 transitions, 9702 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:26:19,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 644 transitions, 11370 flow [2024-06-27 22:26:22,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 644 transitions, 11176 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:22,037 INFO L231 Difference]: Finished difference. Result has 448 places, 618 transitions, 9726 flow [2024-06-27 22:26:22,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9508, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9726, PETRI_PLACES=448, PETRI_TRANSITIONS=618} [2024-06-27 22:26:22,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 22:26:22,039 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 618 transitions, 9726 flow [2024-06-27 22:26:22,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:22,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:22,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:22,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:26:22,039 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:22,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1921306759, now seen corresponding path program 5 times [2024-06-27 22:26:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21211750] [2024-06-27 22:26:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:23,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:23,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21211750] [2024-06-27 22:26:23,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21211750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:23,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:23,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741094747] [2024-06-27 22:26:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:23,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:23,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:23,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 618 transitions, 9726 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:23,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:23,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:23,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:25,224 INFO L124 PetriNetUnfolderBase]: 2055/3916 cut-off events. [2024-06-27 22:26:25,225 INFO L125 PetriNetUnfolderBase]: For 303370/303498 co-relation queries the response was YES. [2024-06-27 22:26:25,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29967 conditions, 3916 events. 2055/3916 cut-off events. For 303370/303498 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 27489 event pairs, 461 based on Foata normal form. 9/3633 useless extension candidates. Maximal degree in co-relation 29762. Up to 3101 conditions per place. [2024-06-27 22:26:25,289 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 494 selfloop transitions, 113 changer transitions 0/644 dead transitions. [2024-06-27 22:26:25,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 644 transitions, 11460 flow [2024-06-27 22:26:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 22:26:25,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 22:26:25,290 INFO L175 Difference]: Start difference. First operand has 448 places, 618 transitions, 9726 flow. Second operand 11 states and 175 transitions. [2024-06-27 22:26:25,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 644 transitions, 11460 flow [2024-06-27 22:26:27,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 644 transitions, 11256 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:27,498 INFO L231 Difference]: Finished difference. Result has 450 places, 626 transitions, 9964 flow [2024-06-27 22:26:27,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9522, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9964, PETRI_PLACES=450, PETRI_TRANSITIONS=626} [2024-06-27 22:26:27,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-27 22:26:27,499 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 626 transitions, 9964 flow [2024-06-27 22:26:27,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:27,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:27,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:26:27,500 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:27,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1921312525, now seen corresponding path program 11 times [2024-06-27 22:26:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027133461] [2024-06-27 22:26:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:29,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027133461] [2024-06-27 22:26:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027133461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:29,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:29,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:29,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725705480] [2024-06-27 22:26:29,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:29,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:29,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:29,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 626 transitions, 9964 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:29,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:29,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:29,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:31,243 INFO L124 PetriNetUnfolderBase]: 2052/3909 cut-off events. [2024-06-27 22:26:31,243 INFO L125 PetriNetUnfolderBase]: For 274657/274785 co-relation queries the response was YES. [2024-06-27 22:26:31,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29699 conditions, 3909 events. 2052/3909 cut-off events. For 274657/274785 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 27456 event pairs, 461 based on Foata normal form. 7/3623 useless extension candidates. Maximal degree in co-relation 29493. Up to 3105 conditions per place. [2024-06-27 22:26:31,299 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 509 selfloop transitions, 101 changer transitions 0/647 dead transitions. [2024-06-27 22:26:31,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 647 transitions, 11288 flow [2024-06-27 22:26:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:26:31,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:26:31,301 INFO L175 Difference]: Start difference. First operand has 450 places, 626 transitions, 9964 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:26:31,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 647 transitions, 11288 flow [2024-06-27 22:26:33,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 647 transitions, 10944 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:33,413 INFO L231 Difference]: Finished difference. Result has 452 places, 626 transitions, 9830 flow [2024-06-27 22:26:33,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9620, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9830, PETRI_PLACES=452, PETRI_TRANSITIONS=626} [2024-06-27 22:26:33,414 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-27 22:26:33,414 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 626 transitions, 9830 flow [2024-06-27 22:26:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:33,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:26:33,415 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1915944379, now seen corresponding path program 6 times [2024-06-27 22:26:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:33,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393248383] [2024-06-27 22:26:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:35,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:35,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393248383] [2024-06-27 22:26:35,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393248383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:35,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234682966] [2024-06-27 22:26:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:35,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:35,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:35,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 626 transitions, 9830 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:35,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:35,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:35,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:36,971 INFO L124 PetriNetUnfolderBase]: 2044/3895 cut-off events. [2024-06-27 22:26:36,971 INFO L125 PetriNetUnfolderBase]: For 257053/257181 co-relation queries the response was YES. [2024-06-27 22:26:37,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28684 conditions, 3895 events. 2044/3895 cut-off events. For 257053/257181 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 27411 event pairs, 463 based on Foata normal form. 9/3608 useless extension candidates. Maximal degree in co-relation 28477. Up to 3134 conditions per place. [2024-06-27 22:26:37,038 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 503 selfloop transitions, 103 changer transitions 0/643 dead transitions. [2024-06-27 22:26:37,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 643 transitions, 11100 flow [2024-06-27 22:26:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 22:26:37,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 22:26:37,039 INFO L175 Difference]: Start difference. First operand has 452 places, 626 transitions, 9830 flow. Second operand 11 states and 172 transitions. [2024-06-27 22:26:37,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 643 transitions, 11100 flow [2024-06-27 22:26:39,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 643 transitions, 10814 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-27 22:26:39,326 INFO L231 Difference]: Finished difference. Result has 453 places, 626 transitions, 9762 flow [2024-06-27 22:26:39,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9544, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9762, PETRI_PLACES=453, PETRI_TRANSITIONS=626} [2024-06-27 22:26:39,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 22:26:39,327 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 626 transitions, 9762 flow [2024-06-27 22:26:39,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:39,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:39,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:39,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:26:39,327 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:39,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -28744273, now seen corresponding path program 7 times [2024-06-27 22:26:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:39,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032522903] [2024-06-27 22:26:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:41,059 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 22:26:41,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:41,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032522903] [2024-06-27 22:26:41,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032522903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:41,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:41,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419506860] [2024-06-27 22:26:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:41,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:41,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:41,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 626 transitions, 9762 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:41,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:41,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:41,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:42,620 INFO L124 PetriNetUnfolderBase]: 2030/3890 cut-off events. [2024-06-27 22:26:42,620 INFO L125 PetriNetUnfolderBase]: For 224966/225095 co-relation queries the response was YES. [2024-06-27 22:26:42,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28279 conditions, 3890 events. 2030/3890 cut-off events. For 224966/225095 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 27393 event pairs, 429 based on Foata normal form. 9/3619 useless extension candidates. Maximal degree in co-relation 28071. Up to 2919 conditions per place. [2024-06-27 22:26:42,674 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 432 selfloop transitions, 177 changer transitions 0/646 dead transitions. [2024-06-27 22:26:42,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 646 transitions, 11046 flow [2024-06-27 22:26:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:26:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:26:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 22:26:42,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346846846846847 [2024-06-27 22:26:42,675 INFO L175 Difference]: Start difference. First operand has 453 places, 626 transitions, 9762 flow. Second operand 12 states and 193 transitions. [2024-06-27 22:26:42,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 646 transitions, 11046 flow [2024-06-27 22:26:44,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 646 transitions, 10746 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 22:26:44,450 INFO L231 Difference]: Finished difference. Result has 455 places, 626 transitions, 9836 flow [2024-06-27 22:26:44,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9462, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9836, PETRI_PLACES=455, PETRI_TRANSITIONS=626} [2024-06-27 22:26:44,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-27 22:26:44,451 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 626 transitions, 9836 flow [2024-06-27 22:26:44,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:44,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:44,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:44,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:26:44,452 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:44,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1788830325, now seen corresponding path program 12 times [2024-06-27 22:26:44,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:44,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475465060] [2024-06-27 22:26:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:44,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475465060] [2024-06-27 22:26:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475465060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236331259] [2024-06-27 22:26:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:46,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:46,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 626 transitions, 9836 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:46,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:46,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:46,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:48,194 INFO L124 PetriNetUnfolderBase]: 2173/4193 cut-off events. [2024-06-27 22:26:48,194 INFO L125 PetriNetUnfolderBase]: For 332669/332788 co-relation queries the response was YES. [2024-06-27 22:26:48,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31209 conditions, 4193 events. 2173/4193 cut-off events. For 332669/332788 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 29898 event pairs, 441 based on Foata normal form. 7/3879 useless extension candidates. Maximal degree in co-relation 31000. Up to 2784 conditions per place. [2024-06-27 22:26:48,263 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 413 selfloop transitions, 209 changer transitions 0/659 dead transitions. [2024-06-27 22:26:48,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 659 transitions, 11832 flow [2024-06-27 22:26:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 22:26:48,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 22:26:48,264 INFO L175 Difference]: Start difference. First operand has 455 places, 626 transitions, 9836 flow. Second operand 11 states and 202 transitions. [2024-06-27 22:26:48,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 659 transitions, 11832 flow [2024-06-27 22:26:50,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 659 transitions, 11273 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-27 22:26:50,563 INFO L231 Difference]: Finished difference. Result has 453 places, 628 transitions, 9741 flow [2024-06-27 22:26:50,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9285, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9741, PETRI_PLACES=453, PETRI_TRANSITIONS=628} [2024-06-27 22:26:50,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 22:26:50,563 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 628 transitions, 9741 flow [2024-06-27 22:26:50,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:50,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:50,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:26:50,564 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:50,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1788834975, now seen corresponding path program 13 times [2024-06-27 22:26:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196384204] [2024-06-27 22:26:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:50,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196384204] [2024-06-27 22:26:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196384204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:52,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297167930] [2024-06-27 22:26:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:52,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:52,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 628 transitions, 9741 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:52,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:52,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:52,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:54,058 INFO L124 PetriNetUnfolderBase]: 2189/4224 cut-off events. [2024-06-27 22:26:54,059 INFO L125 PetriNetUnfolderBase]: For 329112/329231 co-relation queries the response was YES. [2024-06-27 22:26:54,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30929 conditions, 4224 events. 2189/4224 cut-off events. For 329112/329231 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 30311 event pairs, 493 based on Foata normal form. 7/3908 useless extension candidates. Maximal degree in co-relation 30722. Up to 3305 conditions per place. [2024-06-27 22:26:54,130 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 458 selfloop transitions, 150 changer transitions 0/645 dead transitions. [2024-06-27 22:26:54,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 645 transitions, 11041 flow [2024-06-27 22:26:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:26:54,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:26:54,131 INFO L175 Difference]: Start difference. First operand has 453 places, 628 transitions, 9741 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:26:54,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 645 transitions, 11041 flow [2024-06-27 22:26:56,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 645 transitions, 10763 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:56,857 INFO L231 Difference]: Finished difference. Result has 457 places, 629 transitions, 9787 flow [2024-06-27 22:26:56,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9471, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9787, PETRI_PLACES=457, PETRI_TRANSITIONS=629} [2024-06-27 22:26:56,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 22:26:56,858 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 629 transitions, 9787 flow [2024-06-27 22:26:56,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:56,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:56,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:56,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:26:56,858 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:56,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1788835161, now seen corresponding path program 8 times [2024-06-27 22:26:56,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:56,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147320079] [2024-06-27 22:26:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:56,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:58,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:58,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147320079] [2024-06-27 22:26:58,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147320079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:58,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:58,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:58,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505521893] [2024-06-27 22:26:58,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:58,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:58,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:58,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:58,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 629 transitions, 9787 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:58,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:58,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:58,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:00,491 INFO L124 PetriNetUnfolderBase]: 2225/4272 cut-off events. [2024-06-27 22:27:00,491 INFO L125 PetriNetUnfolderBase]: For 351513/351636 co-relation queries the response was YES. [2024-06-27 22:27:00,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31925 conditions, 4272 events. 2225/4272 cut-off events. For 351513/351636 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30557 event pairs, 456 based on Foata normal form. 7/3940 useless extension candidates. Maximal degree in co-relation 31716. Up to 3083 conditions per place. [2024-06-27 22:27:00,563 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 402 selfloop transitions, 214 changer transitions 0/653 dead transitions. [2024-06-27 22:27:00,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 653 transitions, 11755 flow [2024-06-27 22:27:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:27:00,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 22:27:00,564 INFO L175 Difference]: Start difference. First operand has 457 places, 629 transitions, 9787 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:27:00,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 653 transitions, 11755 flow [2024-06-27 22:27:03,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 653 transitions, 11457 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:03,113 INFO L231 Difference]: Finished difference. Result has 459 places, 633 transitions, 10054 flow [2024-06-27 22:27:03,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9489, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10054, PETRI_PLACES=459, PETRI_TRANSITIONS=633} [2024-06-27 22:27:03,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 22:27:03,113 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 633 transitions, 10054 flow [2024-06-27 22:27:03,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:03,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:03,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:27:03,114 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:03,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1789007955, now seen corresponding path program 14 times [2024-06-27 22:27:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:03,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383203941] [2024-06-27 22:27:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:05,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383203941] [2024-06-27 22:27:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383203941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:05,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:05,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:27:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268461681] [2024-06-27 22:27:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:27:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:05,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:27:05,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:27:05,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:05,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 633 transitions, 10054 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:05,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:05,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:05,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:06,713 INFO L124 PetriNetUnfolderBase]: 2218/4265 cut-off events. [2024-06-27 22:27:06,713 INFO L125 PetriNetUnfolderBase]: For 340844/340963 co-relation queries the response was YES. [2024-06-27 22:27:06,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31959 conditions, 4265 events. 2218/4265 cut-off events. For 340844/340963 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30556 event pairs, 493 based on Foata normal form. 7/3937 useless extension candidates. Maximal degree in co-relation 31749. Up to 3358 conditions per place. [2024-06-27 22:27:06,783 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 462 selfloop transitions, 150 changer transitions 0/649 dead transitions. [2024-06-27 22:27:06,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 649 transitions, 11344 flow [2024-06-27 22:27:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:27:06,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:27:06,784 INFO L175 Difference]: Start difference. First operand has 459 places, 633 transitions, 10054 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:27:06,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 649 transitions, 11344 flow [2024-06-27 22:27:09,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 649 transitions, 11035 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:09,347 INFO L231 Difference]: Finished difference. Result has 463 places, 633 transitions, 10049 flow [2024-06-27 22:27:09,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10049, PETRI_PLACES=463, PETRI_TRANSITIONS=633} [2024-06-27 22:27:09,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-27 22:27:09,348 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 633 transitions, 10049 flow [2024-06-27 22:27:09,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:09,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:09,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:09,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:27:09,349 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:09,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1789008141, now seen corresponding path program 9 times [2024-06-27 22:27:09,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:09,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911437324] [2024-06-27 22:27:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:09,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911437324] [2024-06-27 22:27:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911437324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721589476] [2024-06-27 22:27:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:11,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:11,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:11,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:11,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 633 transitions, 10049 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:11,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:11,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:11,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:12,901 INFO L124 PetriNetUnfolderBase]: 2216/4260 cut-off events. [2024-06-27 22:27:12,901 INFO L125 PetriNetUnfolderBase]: For 323105/323226 co-relation queries the response was YES. [2024-06-27 22:27:12,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31660 conditions, 4260 events. 2216/4260 cut-off events. For 323105/323226 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30504 event pairs, 453 based on Foata normal form. 7/3930 useless extension candidates. Maximal degree in co-relation 31448. Up to 3101 conditions per place. [2024-06-27 22:27:12,973 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 406 selfloop transitions, 209 changer transitions 0/652 dead transitions. [2024-06-27 22:27:12,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 652 transitions, 11625 flow [2024-06-27 22:27:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:27:12,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 22:27:12,974 INFO L175 Difference]: Start difference. First operand has 463 places, 633 transitions, 10049 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:27:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 652 transitions, 11625 flow [2024-06-27 22:27:15,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 652 transitions, 11281 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 22:27:15,366 INFO L231 Difference]: Finished difference. Result has 464 places, 633 transitions, 10128 flow [2024-06-27 22:27:15,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9705, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10128, PETRI_PLACES=464, PETRI_TRANSITIONS=633} [2024-06-27 22:27:15,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-27 22:27:15,367 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 633 transitions, 10128 flow [2024-06-27 22:27:15,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:15,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:15,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:15,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:27:15,367 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:15,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1961498031, now seen corresponding path program 10 times [2024-06-27 22:27:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:15,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257493993] [2024-06-27 22:27:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:17,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:17,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257493993] [2024-06-27 22:27:17,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257493993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:17,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:17,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695824582] [2024-06-27 22:27:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:17,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:17,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 633 transitions, 10128 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:17,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:17,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:17,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:18,717 INFO L124 PetriNetUnfolderBase]: 2228/4279 cut-off events. [2024-06-27 22:27:18,717 INFO L125 PetriNetUnfolderBase]: For 329592/329711 co-relation queries the response was YES. [2024-06-27 22:27:18,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32074 conditions, 4279 events. 2228/4279 cut-off events. For 329592/329711 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 30666 event pairs, 456 based on Foata normal form. 7/3945 useless extension candidates. Maximal degree in co-relation 31861. Up to 3112 conditions per place. [2024-06-27 22:27:18,793 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 389 selfloop transitions, 229 changer transitions 0/655 dead transitions. [2024-06-27 22:27:18,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 655 transitions, 11788 flow [2024-06-27 22:27:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:27:18,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:27:18,794 INFO L175 Difference]: Start difference. First operand has 464 places, 633 transitions, 10128 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:27:18,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 655 transitions, 11788 flow [2024-06-27 22:27:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 655 transitions, 11346 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:27:21,121 INFO L231 Difference]: Finished difference. Result has 465 places, 635 transitions, 10221 flow [2024-06-27 22:27:21,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9686, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10221, PETRI_PLACES=465, PETRI_TRANSITIONS=635} [2024-06-27 22:27:21,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 22:27:21,122 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 635 transitions, 10221 flow [2024-06-27 22:27:21,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:21,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:21,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:21,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:27:21,123 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:21,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1784366325, now seen corresponding path program 15 times [2024-06-27 22:27:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074148654] [2024-06-27 22:27:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:23,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074148654] [2024-06-27 22:27:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074148654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:23,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676588164] [2024-06-27 22:27:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:23,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:23,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:23,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:23,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 635 transitions, 10221 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:23,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:23,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:23,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:24,816 INFO L124 PetriNetUnfolderBase]: 2244/4318 cut-off events. [2024-06-27 22:27:24,816 INFO L125 PetriNetUnfolderBase]: For 334527/334646 co-relation queries the response was YES. [2024-06-27 22:27:24,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32322 conditions, 4318 events. 2244/4318 cut-off events. For 334527/334646 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 31033 event pairs, 459 based on Foata normal form. 7/3981 useless extension candidates. Maximal degree in co-relation 32108. Up to 3035 conditions per place. [2024-06-27 22:27:24,888 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 400 selfloop transitions, 220 changer transitions 0/657 dead transitions. [2024-06-27 22:27:24,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 657 transitions, 11851 flow [2024-06-27 22:27:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:27:24,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:27:24,889 INFO L175 Difference]: Start difference. First operand has 465 places, 635 transitions, 10221 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:27:24,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 657 transitions, 11851 flow [2024-06-27 22:27:27,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 657 transitions, 11342 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:27,433 INFO L231 Difference]: Finished difference. Result has 467 places, 636 transitions, 10176 flow [2024-06-27 22:27:27,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9712, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10176, PETRI_PLACES=467, PETRI_TRANSITIONS=636} [2024-06-27 22:27:27,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 22:27:27,434 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 636 transitions, 10176 flow [2024-06-27 22:27:27,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:27,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:27,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:27:27,434 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:27,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1961744109, now seen corresponding path program 1 times [2024-06-27 22:27:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862780964] [2024-06-27 22:27:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:27,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:29,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862780964] [2024-06-27 22:27:29,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862780964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:29,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:29,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:29,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307957288] [2024-06-27 22:27:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:29,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:29,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:27:29,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 636 transitions, 10176 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:29,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:29,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:27:29,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:31,266 INFO L124 PetriNetUnfolderBase]: 2436/4633 cut-off events. [2024-06-27 22:27:31,266 INFO L125 PetriNetUnfolderBase]: For 360004/360007 co-relation queries the response was YES. [2024-06-27 22:27:31,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36149 conditions, 4633 events. 2436/4633 cut-off events. For 360004/360007 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 33098 event pairs, 642 based on Foata normal form. 3/4383 useless extension candidates. Maximal degree in co-relation 35934. Up to 3905 conditions per place. [2024-06-27 22:27:31,338 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 579 selfloop transitions, 78 changer transitions 0/665 dead transitions. [2024-06-27 22:27:31,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 665 transitions, 11857 flow [2024-06-27 22:27:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:27:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:27:31,339 INFO L175 Difference]: Start difference. First operand has 467 places, 636 transitions, 10176 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:27:31,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 665 transitions, 11857 flow [2024-06-27 22:27:33,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 665 transitions, 11409 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:33,873 INFO L231 Difference]: Finished difference. Result has 469 places, 637 transitions, 9907 flow [2024-06-27 22:27:33,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9728, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9907, PETRI_PLACES=469, PETRI_TRANSITIONS=637} [2024-06-27 22:27:33,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 22:27:33,873 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 637 transitions, 9907 flow [2024-06-27 22:27:33,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:33,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:33,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:33,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:27:33,874 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:33,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1784366511, now seen corresponding path program 11 times [2024-06-27 22:27:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581261149] [2024-06-27 22:27:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:33,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581261149] [2024-06-27 22:27:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581261149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:35,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:35,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:27:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155950543] [2024-06-27 22:27:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:27:35,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:27:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:27:35,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:35,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 637 transitions, 9907 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:35,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:35,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:35,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:37,425 INFO L124 PetriNetUnfolderBase]: 2292/4401 cut-off events. [2024-06-27 22:27:37,426 INFO L125 PetriNetUnfolderBase]: For 362371/362492 co-relation queries the response was YES. [2024-06-27 22:27:37,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32938 conditions, 4401 events. 2292/4401 cut-off events. For 362371/362492 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 31708 event pairs, 474 based on Foata normal form. 7/4049 useless extension candidates. Maximal degree in co-relation 32722. Up to 3083 conditions per place. [2024-06-27 22:27:37,500 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 399 selfloop transitions, 224 changer transitions 0/660 dead transitions. [2024-06-27 22:27:37,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 660 transitions, 11921 flow [2024-06-27 22:27:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:27:37,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:27:37,501 INFO L175 Difference]: Start difference. First operand has 469 places, 637 transitions, 9907 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:27:37,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 660 transitions, 11921 flow [2024-06-27 22:27:40,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 660 transitions, 11762 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:40,283 INFO L231 Difference]: Finished difference. Result has 471 places, 641 transitions, 10349 flow [2024-06-27 22:27:40,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9748, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10349, PETRI_PLACES=471, PETRI_TRANSITIONS=641} [2024-06-27 22:27:40,284 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 22:27:40,284 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 641 transitions, 10349 flow [2024-06-27 22:27:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:40,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:40,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:27:40,284 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1784361675, now seen corresponding path program 16 times [2024-06-27 22:27:40,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:40,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735367835] [2024-06-27 22:27:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:40,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735367835] [2024-06-27 22:27:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735367835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:42,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:42,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:27:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98028409] [2024-06-27 22:27:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:42,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:27:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:27:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:27:42,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:42,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 641 transitions, 10349 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:42,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:42,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:44,453 INFO L124 PetriNetUnfolderBase]: 2399/4647 cut-off events. [2024-06-27 22:27:44,453 INFO L125 PetriNetUnfolderBase]: For 469429/469546 co-relation queries the response was YES. [2024-06-27 22:27:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36118 conditions, 4647 events. 2399/4647 cut-off events. For 469429/469546 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 33933 event pairs, 499 based on Foata normal form. 7/4279 useless extension candidates. Maximal degree in co-relation 35901. Up to 3006 conditions per place. [2024-06-27 22:27:44,534 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 412 selfloop transitions, 233 changer transitions 0/682 dead transitions. [2024-06-27 22:27:44,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 682 transitions, 12511 flow [2024-06-27 22:27:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-27 22:27:44,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:27:44,535 INFO L175 Difference]: Start difference. First operand has 471 places, 641 transitions, 10349 flow. Second operand 12 states and 220 transitions. [2024-06-27 22:27:44,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 682 transitions, 12511 flow [2024-06-27 22:27:47,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 682 transitions, 12204 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:47,505 INFO L231 Difference]: Finished difference. Result has 479 places, 652 transitions, 10756 flow [2024-06-27 22:27:47,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10042, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10756, PETRI_PLACES=479, PETRI_TRANSITIONS=652} [2024-06-27 22:27:47,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 22:27:47,505 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 652 transitions, 10756 flow [2024-06-27 22:27:47,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:47,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:47,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:47,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:27:47,506 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:47,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1961497845, now seen corresponding path program 17 times [2024-06-27 22:27:47,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:47,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875087831] [2024-06-27 22:27:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:47,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875087831] [2024-06-27 22:27:49,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875087831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:49,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:49,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:27:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136812681] [2024-06-27 22:27:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:49,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:27:49,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:27:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:27:49,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:49,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 652 transitions, 10756 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:49,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:49,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:49,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:51,299 INFO L124 PetriNetUnfolderBase]: 2416/4679 cut-off events. [2024-06-27 22:27:51,299 INFO L125 PetriNetUnfolderBase]: For 476183/476308 co-relation queries the response was YES. [2024-06-27 22:27:51,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37501 conditions, 4679 events. 2416/4679 cut-off events. For 476183/476308 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34359 event pairs, 550 based on Foata normal form. 7/4307 useless extension candidates. Maximal degree in co-relation 37279. Up to 3712 conditions per place. [2024-06-27 22:27:51,379 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 462 selfloop transitions, 172 changer transitions 0/671 dead transitions. [2024-06-27 22:27:51,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 671 transitions, 12128 flow [2024-06-27 22:27:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:27:51,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:27:51,380 INFO L175 Difference]: Start difference. First operand has 479 places, 652 transitions, 10756 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:27:51,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 671 transitions, 12128 flow [2024-06-27 22:27:54,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 671 transitions, 11714 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:54,554 INFO L231 Difference]: Finished difference. Result has 482 places, 655 transitions, 10730 flow [2024-06-27 22:27:54,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10730, PETRI_PLACES=482, PETRI_TRANSITIONS=655} [2024-06-27 22:27:54,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 22:27:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 655 transitions, 10730 flow [2024-06-27 22:27:54,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:54,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:54,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:27:54,555 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:54,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash -57868699, now seen corresponding path program 18 times [2024-06-27 22:27:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:54,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298084207] [2024-06-27 22:27:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:56,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:56,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298084207] [2024-06-27 22:27:56,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298084207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:56,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:56,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:27:56,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690961149] [2024-06-27 22:27:56,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:56,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:27:56,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:27:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:27:56,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:56,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 655 transitions, 10730 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:56,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:56,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:56,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:58,318 INFO L124 PetriNetUnfolderBase]: 2434/4720 cut-off events. [2024-06-27 22:27:58,318 INFO L125 PetriNetUnfolderBase]: For 474517/474642 co-relation queries the response was YES. [2024-06-27 22:27:58,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37409 conditions, 4720 events. 2434/4720 cut-off events. For 474517/474642 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 34760 event pairs, 558 based on Foata normal form. 7/4345 useless extension candidates. Maximal degree in co-relation 37187. Up to 3741 conditions per place. [2024-06-27 22:27:58,398 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 475 selfloop transitions, 160 changer transitions 0/672 dead transitions. [2024-06-27 22:27:58,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 672 transitions, 12090 flow [2024-06-27 22:27:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:27:58,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:27:58,399 INFO L175 Difference]: Start difference. First operand has 482 places, 655 transitions, 10730 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:27:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 672 transitions, 12090 flow [2024-06-27 22:28:01,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 672 transitions, 11807 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:01,777 INFO L231 Difference]: Finished difference. Result has 487 places, 656 transitions, 10797 flow [2024-06-27 22:28:01,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10447, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10797, PETRI_PLACES=487, PETRI_TRANSITIONS=656} [2024-06-27 22:28:01,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-27 22:28:01,778 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 656 transitions, 10797 flow [2024-06-27 22:28:01,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:01,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:01,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:01,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:28:01,778 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:01,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash -58041493, now seen corresponding path program 12 times [2024-06-27 22:28:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233384069] [2024-06-27 22:28:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:01,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233384069] [2024-06-27 22:28:03,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233384069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:03,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:03,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:28:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181676481] [2024-06-27 22:28:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:03,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:28:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:28:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:28:03,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:28:03,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 656 transitions, 10797 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:03,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:03,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:28:03,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:05,406 INFO L124 PetriNetUnfolderBase]: 2450/4741 cut-off events. [2024-06-27 22:28:05,406 INFO L125 PetriNetUnfolderBase]: For 481653/481782 co-relation queries the response was YES. [2024-06-27 22:28:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37708 conditions, 4741 events. 2450/4741 cut-off events. For 481653/481782 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 34874 event pairs, 544 based on Foata normal form. 7/4358 useless extension candidates. Maximal degree in co-relation 37485. Up to 3434 conditions per place. [2024-06-27 22:28:05,492 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 409 selfloop transitions, 231 changer transitions 0/677 dead transitions. [2024-06-27 22:28:05,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 677 transitions, 12803 flow [2024-06-27 22:28:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:28:05,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 22:28:05,493 INFO L175 Difference]: Start difference. First operand has 487 places, 656 transitions, 10797 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:28:05,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 677 transitions, 12803 flow [2024-06-27 22:28:08,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 677 transitions, 12386 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:28:08,956 INFO L231 Difference]: Finished difference. Result has 488 places, 658 transitions, 10907 flow [2024-06-27 22:28:08,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10380, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10907, PETRI_PLACES=488, PETRI_TRANSITIONS=658} [2024-06-27 22:28:08,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-27 22:28:08,956 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 658 transitions, 10907 flow [2024-06-27 22:28:08,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:08,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:08,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:28:08,957 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -58041679, now seen corresponding path program 19 times [2024-06-27 22:28:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:08,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114848990] [2024-06-27 22:28:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114848990] [2024-06-27 22:28:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114848990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:10,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565843861] [2024-06-27 22:28:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:10,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:10,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:11,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:28:11,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 658 transitions, 10907 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:11,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:11,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:28:11,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:12,734 INFO L124 PetriNetUnfolderBase]: 2461/4775 cut-off events. [2024-06-27 22:28:12,734 INFO L125 PetriNetUnfolderBase]: For 490222/490347 co-relation queries the response was YES. [2024-06-27 22:28:12,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38139 conditions, 4775 events. 2461/4775 cut-off events. For 490222/490347 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35299 event pairs, 566 based on Foata normal form. 7/4391 useless extension candidates. Maximal degree in co-relation 37915. Up to 3770 conditions per place. [2024-06-27 22:28:12,813 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 476 selfloop transitions, 162 changer transitions 0/675 dead transitions. [2024-06-27 22:28:12,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 675 transitions, 12275 flow [2024-06-27 22:28:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:28:12,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:28:12,814 INFO L175 Difference]: Start difference. First operand has 488 places, 658 transitions, 10907 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:28:12,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 675 transitions, 12275 flow [2024-06-27 22:28:16,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 675 transitions, 11739 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:16,100 INFO L231 Difference]: Finished difference. Result has 490 places, 659 transitions, 10727 flow [2024-06-27 22:28:16,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10371, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10727, PETRI_PLACES=490, PETRI_TRANSITIONS=659} [2024-06-27 22:28:16,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 22:28:16,101 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 659 transitions, 10727 flow [2024-06-27 22:28:16,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:16,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:16,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:28:16,101 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:16,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1955241921, now seen corresponding path program 13 times [2024-06-27 22:28:16,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368081508] [2024-06-27 22:28:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368081508] [2024-06-27 22:28:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368081508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:17,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554619630] [2024-06-27 22:28:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:18,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:28:18,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 659 transitions, 10727 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:18,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:18,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:28:18,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:19,627 INFO L124 PetriNetUnfolderBase]: 2459/4770 cut-off events. [2024-06-27 22:28:19,628 INFO L125 PetriNetUnfolderBase]: For 472142/472269 co-relation queries the response was YES. [2024-06-27 22:28:19,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37353 conditions, 4770 events. 2459/4770 cut-off events. For 472142/472269 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35194 event pairs, 551 based on Foata normal form. 7/4384 useless extension candidates. Maximal degree in co-relation 37128. Up to 3532 conditions per place. [2024-06-27 22:28:19,715 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 422 selfloop transitions, 219 changer transitions 0/678 dead transitions. [2024-06-27 22:28:19,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 678 transitions, 12399 flow [2024-06-27 22:28:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:28:19,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:28:19,716 INFO L175 Difference]: Start difference. First operand has 490 places, 659 transitions, 10727 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:28:19,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 678 transitions, 12399 flow [2024-06-27 22:28:22,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 678 transitions, 12037 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:22,906 INFO L231 Difference]: Finished difference. Result has 492 places, 659 transitions, 10808 flow [2024-06-27 22:28:22,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10365, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10808, PETRI_PLACES=492, PETRI_TRANSITIONS=659} [2024-06-27 22:28:22,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 22:28:22,907 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 659 transitions, 10808 flow [2024-06-27 22:28:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:22,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:22,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:22,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:28:22,908 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:22,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:22,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1955064105, now seen corresponding path program 20 times [2024-06-27 22:28:22,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:22,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835029966] [2024-06-27 22:28:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:22,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835029966] [2024-06-27 22:28:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835029966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:24,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:24,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:28:24,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080372181] [2024-06-27 22:28:24,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:24,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:28:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:28:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:28:25,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:28:25,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 659 transitions, 10808 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:25,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:25,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:28:25,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:26,899 INFO L124 PetriNetUnfolderBase]: 2549/4998 cut-off events. [2024-06-27 22:28:26,899 INFO L125 PetriNetUnfolderBase]: For 583990/584118 co-relation queries the response was YES. [2024-06-27 22:28:26,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39966 conditions, 4998 events. 2549/4998 cut-off events. For 583990/584118 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37520 event pairs, 598 based on Foata normal form. 7/4601 useless extension candidates. Maximal degree in co-relation 39740. Up to 3361 conditions per place. [2024-06-27 22:28:26,988 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 425 selfloop transitions, 227 changer transitions 0/689 dead transitions. [2024-06-27 22:28:26,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 689 transitions, 12916 flow [2024-06-27 22:28:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:28:26,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:28:26,993 INFO L175 Difference]: Start difference. First operand has 492 places, 659 transitions, 10808 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:28:26,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 689 transitions, 12916 flow [2024-06-27 22:28:31,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 689 transitions, 12427 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:28:31,119 INFO L231 Difference]: Finished difference. Result has 493 places, 660 transitions, 10807 flow [2024-06-27 22:28:31,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10319, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10807, PETRI_PLACES=493, PETRI_TRANSITIONS=660} [2024-06-27 22:28:31,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-27 22:28:31,120 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 660 transitions, 10807 flow [2024-06-27 22:28:31,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:31,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:31,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:31,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:28:31,120 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:31,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1784246355, now seen corresponding path program 21 times [2024-06-27 22:28:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:31,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422256377] [2024-06-27 22:28:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:32,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:32,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422256377] [2024-06-27 22:28:32,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422256377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:32,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:32,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001768674] [2024-06-27 22:28:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:32,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:32,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:33,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:28:33,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 660 transitions, 10807 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:33,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:33,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:28:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:34,796 INFO L124 PetriNetUnfolderBase]: 2564/5025 cut-off events. [2024-06-27 22:28:34,796 INFO L125 PetriNetUnfolderBase]: For 592803/592931 co-relation queries the response was YES. [2024-06-27 22:28:34,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40305 conditions, 5025 events. 2564/5025 cut-off events. For 592803/592931 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37946 event pairs, 625 based on Foata normal form. 7/4628 useless extension candidates. Maximal degree in co-relation 40078. Up to 3615 conditions per place. [2024-06-27 22:28:34,883 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 480 selfloop transitions, 168 changer transitions 0/685 dead transitions. [2024-06-27 22:28:34,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 685 transitions, 12275 flow [2024-06-27 22:28:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:28:34,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:28:34,884 INFO L175 Difference]: Start difference. First operand has 493 places, 660 transitions, 10807 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:28:34,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 685 transitions, 12275 flow [2024-06-27 22:28:39,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 685 transitions, 11803 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:39,131 INFO L231 Difference]: Finished difference. Result has 494 places, 661 transitions, 10707 flow [2024-06-27 22:28:39,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10335, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10707, PETRI_PLACES=494, PETRI_TRANSITIONS=661} [2024-06-27 22:28:39,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-27 22:28:39,132 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 661 transitions, 10707 flow [2024-06-27 22:28:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:39,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:39,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:39,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:28:39,132 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:39,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash -650474509, now seen corresponding path program 2 times [2024-06-27 22:28:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:39,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666520347] [2024-06-27 22:28:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:39,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666520347] [2024-06-27 22:28:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666520347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:41,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:28:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507728411] [2024-06-27 22:28:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:28:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:28:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:28:41,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:28:41,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 661 transitions, 10707 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:41,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:41,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:28:41,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:43,090 INFO L124 PetriNetUnfolderBase]: 2710/5211 cut-off events. [2024-06-27 22:28:43,090 INFO L125 PetriNetUnfolderBase]: For 519582/519585 co-relation queries the response was YES. [2024-06-27 22:28:43,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42545 conditions, 5211 events. 2710/5211 cut-off events. For 519582/519585 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 38445 event pairs, 965 based on Foata normal form. 3/4922 useless extension candidates. Maximal degree in co-relation 42318. Up to 4413 conditions per place. [2024-06-27 22:28:43,180 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 607 selfloop transitions, 70 changer transitions 0/685 dead transitions. [2024-06-27 22:28:43,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 685 transitions, 12338 flow [2024-06-27 22:28:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:28:43,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 22:28:43,181 INFO L175 Difference]: Start difference. First operand has 494 places, 661 transitions, 10707 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:28:43,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 685 transitions, 12338 flow [2024-06-27 22:28:46,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 685 transitions, 11982 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:46,483 INFO L231 Difference]: Finished difference. Result has 497 places, 663 transitions, 10532 flow [2024-06-27 22:28:46,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10351, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10532, PETRI_PLACES=497, PETRI_TRANSITIONS=663} [2024-06-27 22:28:46,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 22:28:46,484 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 663 transitions, 10532 flow [2024-06-27 22:28:46,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:46,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:46,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:46,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:28:46,484 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:46,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash -563119769, now seen corresponding path program 14 times [2024-06-27 22:28:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:46,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819585268] [2024-06-27 22:28:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:48,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:48,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819585268] [2024-06-27 22:28:48,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819585268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:48,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:48,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:28:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784259842] [2024-06-27 22:28:48,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:48,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:28:48,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:48,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:28:48,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:28:48,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:28:48,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 663 transitions, 10532 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:48,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:48,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:28:48,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:50,425 INFO L124 PetriNetUnfolderBase]: 2723/5228 cut-off events. [2024-06-27 22:28:50,425 INFO L125 PetriNetUnfolderBase]: For 525252/525255 co-relation queries the response was YES. [2024-06-27 22:28:50,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42473 conditions, 5228 events. 2723/5228 cut-off events. For 525252/525255 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 38510 event pairs, 963 based on Foata normal form. 3/4935 useless extension candidates. Maximal degree in co-relation 42244. Up to 4321 conditions per place. [2024-06-27 22:28:50,517 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 610 selfloop transitions, 85 changer transitions 0/703 dead transitions. [2024-06-27 22:28:50,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 703 transitions, 12998 flow [2024-06-27 22:28:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:28:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:28:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-27 22:28:50,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-27 22:28:50,518 INFO L175 Difference]: Start difference. First operand has 497 places, 663 transitions, 10532 flow. Second operand 12 states and 187 transitions. [2024-06-27 22:28:50,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 703 transitions, 12998 flow [2024-06-27 22:28:53,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 703 transitions, 12857 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:53,969 INFO L231 Difference]: Finished difference. Result has 500 places, 665 transitions, 10647 flow [2024-06-27 22:28:53,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10391, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10647, PETRI_PLACES=500, PETRI_TRANSITIONS=665} [2024-06-27 22:28:53,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-27 22:28:53,970 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 665 transitions, 10647 flow [2024-06-27 22:28:53,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:53,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:53,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:28:53,971 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:53,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2084916287, now seen corresponding path program 22 times [2024-06-27 22:28:53,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648175955] [2024-06-27 22:28:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:55,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648175955] [2024-06-27 22:28:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648175955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:55,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:55,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:55,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125246820] [2024-06-27 22:28:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:55,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:55,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:55,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:55,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:28:55,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 665 transitions, 10647 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:55,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:55,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:28:55,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:57,452 INFO L124 PetriNetUnfolderBase]: 2736/5253 cut-off events. [2024-06-27 22:28:57,452 INFO L125 PetriNetUnfolderBase]: For 533326/533329 co-relation queries the response was YES. [2024-06-27 22:28:57,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42820 conditions, 5253 events. 2736/5253 cut-off events. For 533326/533329 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 38773 event pairs, 968 based on Foata normal form. 3/4961 useless extension candidates. Maximal degree in co-relation 42590. Up to 4492 conditions per place. [2024-06-27 22:28:57,543 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 614 selfloop transitions, 70 changer transitions 0/692 dead transitions. [2024-06-27 22:28:57,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 692 transitions, 12491 flow [2024-06-27 22:28:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:28:57,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 22:28:57,544 INFO L175 Difference]: Start difference. First operand has 500 places, 665 transitions, 10647 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:28:57,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 692 transitions, 12491 flow [2024-06-27 22:29:00,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 692 transitions, 12299 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:00,896 INFO L231 Difference]: Finished difference. Result has 502 places, 667 transitions, 10664 flow [2024-06-27 22:29:00,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10455, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10664, PETRI_PLACES=502, PETRI_TRANSITIONS=667} [2024-06-27 22:29:00,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-27 22:29:00,897 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 667 transitions, 10664 flow [2024-06-27 22:29:00,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:00,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:00,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:29:00,897 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:00,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:00,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1918509527, now seen corresponding path program 23 times [2024-06-27 22:29:00,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:00,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776337300] [2024-06-27 22:29:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:00,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:02,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776337300] [2024-06-27 22:29:02,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776337300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:02,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:29:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792676446] [2024-06-27 22:29:02,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:02,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:29:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:29:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:29:02,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:02,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 667 transitions, 10664 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:02,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:02,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:02,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:04,973 INFO L124 PetriNetUnfolderBase]: 2753/5292 cut-off events. [2024-06-27 22:29:04,973 INFO L125 PetriNetUnfolderBase]: For 541894/541897 co-relation queries the response was YES. [2024-06-27 22:29:05,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43120 conditions, 5292 events. 2753/5292 cut-off events. For 541894/541897 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39165 event pairs, 979 based on Foata normal form. 3/4998 useless extension candidates. Maximal degree in co-relation 42889. Up to 4512 conditions per place. [2024-06-27 22:29:05,056 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 627 selfloop transitions, 66 changer transitions 0/701 dead transitions. [2024-06-27 22:29:05,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 701 transitions, 12675 flow [2024-06-27 22:29:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:29:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:29:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 22:29:05,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-27 22:29:05,057 INFO L175 Difference]: Start difference. First operand has 502 places, 667 transitions, 10664 flow. Second operand 12 states and 182 transitions. [2024-06-27 22:29:05,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 701 transitions, 12675 flow [2024-06-27 22:29:08,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 701 transitions, 12482 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:08,715 INFO L231 Difference]: Finished difference. Result has 505 places, 668 transitions, 10643 flow [2024-06-27 22:29:08,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10471, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10643, PETRI_PLACES=505, PETRI_TRANSITIONS=668} [2024-06-27 22:29:08,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-27 22:29:08,716 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 668 transitions, 10643 flow [2024-06-27 22:29:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:08,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:08,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:29:08,716 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:08,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1918509341, now seen corresponding path program 15 times [2024-06-27 22:29:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:08,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750380299] [2024-06-27 22:29:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750380299] [2024-06-27 22:29:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750380299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:10,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:10,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:10,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908499348] [2024-06-27 22:29:10,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:10,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:10,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:10,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:10,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 668 transitions, 10643 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:10,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:10,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:12,361 INFO L124 PetriNetUnfolderBase]: 2766/5311 cut-off events. [2024-06-27 22:29:12,361 INFO L125 PetriNetUnfolderBase]: For 549011/549014 co-relation queries the response was YES. [2024-06-27 22:29:12,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43335 conditions, 5311 events. 2766/5311 cut-off events. For 549011/549014 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 39274 event pairs, 972 based on Foata normal form. 3/5011 useless extension candidates. Maximal degree in co-relation 43103. Up to 4527 conditions per place. [2024-06-27 22:29:12,456 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 622 selfloop transitions, 71 changer transitions 0/701 dead transitions. [2024-06-27 22:29:12,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 701 transitions, 12710 flow [2024-06-27 22:29:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:29:12,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:29:12,457 INFO L175 Difference]: Start difference. First operand has 505 places, 668 transitions, 10643 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:29:12,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 701 transitions, 12710 flow [2024-06-27 22:29:16,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 701 transitions, 12588 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:16,363 INFO L231 Difference]: Finished difference. Result has 507 places, 670 transitions, 10752 flow [2024-06-27 22:29:16,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10521, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10752, PETRI_PLACES=507, PETRI_TRANSITIONS=670} [2024-06-27 22:29:16,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-27 22:29:16,363 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 670 transitions, 10752 flow [2024-06-27 22:29:16,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:16,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:16,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:16,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:29:16,364 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:16,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1912007153, now seen corresponding path program 3 times [2024-06-27 22:29:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:16,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629535275] [2024-06-27 22:29:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:18,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:18,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629535275] [2024-06-27 22:29:18,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629535275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:18,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:18,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:18,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501354128] [2024-06-27 22:29:18,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:18,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:18,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:18,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:18,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 670 transitions, 10752 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:18,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:18,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:18,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:20,566 INFO L124 PetriNetUnfolderBase]: 2783/5351 cut-off events. [2024-06-27 22:29:20,566 INFO L125 PetriNetUnfolderBase]: For 555730/555733 co-relation queries the response was YES. [2024-06-27 22:29:20,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43527 conditions, 5351 events. 2783/5351 cut-off events. For 555730/555733 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 39716 event pairs, 980 based on Foata normal form. 3/5051 useless extension candidates. Maximal degree in co-relation 43294. Up to 4620 conditions per place. [2024-06-27 22:29:20,651 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 646 selfloop transitions, 41 changer transitions 0/695 dead transitions. [2024-06-27 22:29:20,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 695 transitions, 12469 flow [2024-06-27 22:29:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 22:29:20,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40786240786240785 [2024-06-27 22:29:20,653 INFO L175 Difference]: Start difference. First operand has 507 places, 670 transitions, 10752 flow. Second operand 11 states and 166 transitions. [2024-06-27 22:29:20,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 695 transitions, 12469 flow [2024-06-27 22:29:24,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 695 transitions, 12264 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:24,396 INFO L231 Difference]: Finished difference. Result has 509 places, 671 transitions, 10656 flow [2024-06-27 22:29:24,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10547, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10656, PETRI_PLACES=509, PETRI_TRANSITIONS=671} [2024-06-27 22:29:24,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 22:29:24,396 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 671 transitions, 10656 flow [2024-06-27 22:29:24,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:24,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:24,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:24,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:29:24,397 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:24,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1918687157, now seen corresponding path program 24 times [2024-06-27 22:29:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:24,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786160112] [2024-06-27 22:29:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786160112] [2024-06-27 22:29:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786160112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:25,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:25,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353434177] [2024-06-27 22:29:25,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:26,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:26,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 671 transitions, 10656 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:26,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:26,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:26,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:28,091 INFO L124 PetriNetUnfolderBase]: 2820/5433 cut-off events. [2024-06-27 22:29:28,091 INFO L125 PetriNetUnfolderBase]: For 586853/586856 co-relation queries the response was YES. [2024-06-27 22:29:28,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44430 conditions, 5433 events. 2820/5433 cut-off events. For 586853/586856 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 40533 event pairs, 991 based on Foata normal form. 3/5131 useless extension candidates. Maximal degree in co-relation 44196. Up to 4548 conditions per place. [2024-06-27 22:29:28,192 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 634 selfloop transitions, 67 changer transitions 0/709 dead transitions. [2024-06-27 22:29:28,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 709 transitions, 13023 flow [2024-06-27 22:29:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:29:28,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:29:28,193 INFO L175 Difference]: Start difference. First operand has 509 places, 671 transitions, 10656 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:29:28,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 709 transitions, 13023 flow [2024-06-27 22:29:32,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 709 transitions, 12934 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:32,110 INFO L231 Difference]: Finished difference. Result has 511 places, 673 transitions, 10779 flow [2024-06-27 22:29:32,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10567, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10779, PETRI_PLACES=511, PETRI_TRANSITIONS=673} [2024-06-27 22:29:32,111 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-27 22:29:32,111 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 673 transitions, 10779 flow [2024-06-27 22:29:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:32,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:32,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:32,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:29:32,112 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:32,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1912016081, now seen corresponding path program 16 times [2024-06-27 22:29:32,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:32,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944594585] [2024-06-27 22:29:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:32,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944594585] [2024-06-27 22:29:33,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944594585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:33,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:33,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888068219] [2024-06-27 22:29:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:34,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:34,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 673 transitions, 10779 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:34,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:34,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:34,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:35,858 INFO L124 PetriNetUnfolderBase]: 2847/5477 cut-off events. [2024-06-27 22:29:35,858 INFO L125 PetriNetUnfolderBase]: For 596756/596759 co-relation queries the response was YES. [2024-06-27 22:29:35,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45098 conditions, 5477 events. 2847/5477 cut-off events. For 596756/596759 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 40875 event pairs, 993 based on Foata normal form. 3/5167 useless extension candidates. Maximal degree in co-relation 44863. Up to 4618 conditions per place. [2024-06-27 22:29:35,963 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 617 selfloop transitions, 85 changer transitions 0/710 dead transitions. [2024-06-27 22:29:35,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 710 transitions, 12882 flow [2024-06-27 22:29:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:29:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:29:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 22:29:35,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-27 22:29:35,964 INFO L175 Difference]: Start difference. First operand has 511 places, 673 transitions, 10779 flow. Second operand 12 states and 182 transitions. [2024-06-27 22:29:35,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 710 transitions, 12882 flow [2024-06-27 22:29:40,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 710 transitions, 12763 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:29:40,268 INFO L231 Difference]: Finished difference. Result has 516 places, 679 transitions, 10986 flow [2024-06-27 22:29:40,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10660, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10986, PETRI_PLACES=516, PETRI_TRANSITIONS=679} [2024-06-27 22:29:40,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-27 22:29:40,269 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 679 transitions, 10986 flow [2024-06-27 22:29:40,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:40,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:40,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:29:40,269 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:40,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1912253417, now seen corresponding path program 25 times [2024-06-27 22:29:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043465419] [2024-06-27 22:29:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:40,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:40,285 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 [1043465419] [2024-06-27 22:29:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043465419] 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 [10] imperfect sequences [] total 10 [2024-06-27 22:29:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136008432] [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 12 states [2024-06-27 22:29:42,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:29:42,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:29:42,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:42,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 679 transitions, 10986 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:42,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:42,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:44,356 INFO L124 PetriNetUnfolderBase]: 2864/5519 cut-off events. [2024-06-27 22:29:44,356 INFO L125 PetriNetUnfolderBase]: For 602479/602482 co-relation queries the response was YES. [2024-06-27 22:29:44,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45404 conditions, 5519 events. 2864/5519 cut-off events. For 602479/602482 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 41328 event pairs, 999 based on Foata normal form. 3/5207 useless extension candidates. Maximal degree in co-relation 45167. Up to 4701 conditions per place. [2024-06-27 22:29:44,459 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 635 selfloop transitions, 68 changer transitions 0/711 dead transitions. [2024-06-27 22:29:44,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 711 transitions, 12954 flow [2024-06-27 22:29:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:29:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:29:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-27 22:29:44,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765765765765766 [2024-06-27 22:29:44,460 INFO L175 Difference]: Start difference. First operand has 516 places, 679 transitions, 10986 flow. Second operand 12 states and 181 transitions. [2024-06-27 22:29:44,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 711 transitions, 12954 flow [2024-06-27 22:29:48,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 711 transitions, 12736 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:29:48,345 INFO L231 Difference]: Finished difference. Result has 520 places, 680 transitions, 10938 flow [2024-06-27 22:29:48,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10768, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10938, PETRI_PLACES=520, PETRI_TRANSITIONS=680} [2024-06-27 22:29:48,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 479 predicate places. [2024-06-27 22:29:48,346 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 680 transitions, 10938 flow [2024-06-27 22:29:48,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:48,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:48,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:29:48,346 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:48,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash -194852739, now seen corresponding path program 4 times [2024-06-27 22:29:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:48,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753207487] [2024-06-27 22:29:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:48,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:50,235 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 22:29:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753207487] [2024-06-27 22:29:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753207487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347442021] [2024-06-27 22:29:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:50,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:50,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:50,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 680 transitions, 10938 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:50,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:50,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:50,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:52,298 INFO L124 PetriNetUnfolderBase]: 2881/5558 cut-off events. [2024-06-27 22:29:52,299 INFO L125 PetriNetUnfolderBase]: For 608731/608734 co-relation queries the response was YES. [2024-06-27 22:29:52,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45487 conditions, 5558 events. 2881/5558 cut-off events. For 608731/608734 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 41750 event pairs, 1000 based on Foata normal form. 3/5242 useless extension candidates. Maximal degree in co-relation 45249. Up to 4789 conditions per place. [2024-06-27 22:29:52,401 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 660 selfloop transitions, 37 changer transitions 0/705 dead transitions. [2024-06-27 22:29:52,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 705 transitions, 12675 flow [2024-06-27 22:29:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 22:29:52,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:29:52,403 INFO L175 Difference]: Start difference. First operand has 520 places, 680 transitions, 10938 flow. Second operand 11 states and 165 transitions. [2024-06-27 22:29:52,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 705 transitions, 12675 flow [2024-06-27 22:29:56,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 705 transitions, 12525 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:56,368 INFO L231 Difference]: Finished difference. Result has 521 places, 681 transitions, 10891 flow [2024-06-27 22:29:56,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10788, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10891, PETRI_PLACES=521, PETRI_TRANSITIONS=681} [2024-06-27 22:29:56,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-27 22:29:56,368 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 681 transitions, 10891 flow [2024-06-27 22:29:56,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:56,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:56,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:56,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:29:56,368 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:56,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash -194861667, now seen corresponding path program 17 times [2024-06-27 22:29:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:56,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490594810] [2024-06-27 22:29:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:56,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:58,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:58,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490594810] [2024-06-27 22:29:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490594810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:58,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:58,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:29:58,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80129791] [2024-06-27 22:29:58,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:29:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:29:58,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:29:58,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:29:58,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 681 transitions, 10891 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:58,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:58,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:29:58,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:00,619 INFO L124 PetriNetUnfolderBase]: 2908/5601 cut-off events. [2024-06-27 22:30:00,619 INFO L125 PetriNetUnfolderBase]: For 617250/617253 co-relation queries the response was YES. [2024-06-27 22:30:00,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45977 conditions, 5601 events. 2908/5601 cut-off events. For 617250/617253 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 42062 event pairs, 995 based on Foata normal form. 3/5281 useless extension candidates. Maximal degree in co-relation 45738. Up to 4786 conditions per place. [2024-06-27 22:30:00,710 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 651 selfloop transitions, 56 changer transitions 0/715 dead transitions. [2024-06-27 22:30:00,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 715 transitions, 12949 flow [2024-06-27 22:30:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:30:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:30:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-27 22:30:00,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40315315315315314 [2024-06-27 22:30:00,711 INFO L175 Difference]: Start difference. First operand has 521 places, 681 transitions, 10891 flow. Second operand 12 states and 179 transitions. [2024-06-27 22:30:00,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 715 transitions, 12949 flow [2024-06-27 22:30:04,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 715 transitions, 12827 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:30:04,530 INFO L231 Difference]: Finished difference. Result has 523 places, 687 transitions, 11045 flow [2024-06-27 22:30:04,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10769, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11045, PETRI_PLACES=523, PETRI_TRANSITIONS=687} [2024-06-27 22:30:04,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-27 22:30:04,530 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 687 transitions, 11045 flow [2024-06-27 22:30:04,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:04,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:04,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:30:04,531 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:04,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash -542753137, now seen corresponding path program 5 times [2024-06-27 22:30:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:04,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091088368] [2024-06-27 22:30:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:04,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091088368] [2024-06-27 22:30:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091088368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:06,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:06,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477841959] [2024-06-27 22:30:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:06,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:06,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:06,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 687 transitions, 11045 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:06,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:06,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:06,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:08,294 INFO L124 PetriNetUnfolderBase]: 2921/5626 cut-off events. [2024-06-27 22:30:08,294 INFO L125 PetriNetUnfolderBase]: For 624579/624582 co-relation queries the response was YES. [2024-06-27 22:30:08,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46221 conditions, 5626 events. 2921/5626 cut-off events. For 624579/624582 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 42266 event pairs, 1008 based on Foata normal form. 3/5307 useless extension candidates. Maximal degree in co-relation 45981. Up to 4897 conditions per place. [2024-06-27 22:30:08,396 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 678 selfloop transitions, 22 changer transitions 0/708 dead transitions. [2024-06-27 22:30:08,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 708 transitions, 12793 flow [2024-06-27 22:30:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:30:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:30:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 22:30:08,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 22:30:08,401 INFO L175 Difference]: Start difference. First operand has 523 places, 687 transitions, 11045 flow. Second operand 10 states and 151 transitions. [2024-06-27 22:30:08,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 708 transitions, 12793 flow [2024-06-27 22:30:12,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 708 transitions, 12610 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:12,432 INFO L231 Difference]: Finished difference. Result has 525 places, 689 transitions, 10969 flow [2024-06-27 22:30:12,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10862, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10969, PETRI_PLACES=525, PETRI_TRANSITIONS=689} [2024-06-27 22:30:12,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 484 predicate places. [2024-06-27 22:30:12,432 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 689 transitions, 10969 flow [2024-06-27 22:30:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:12,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:12,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:12,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:30:12,433 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:12,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash -375842349, now seen corresponding path program 18 times [2024-06-27 22:30:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744718249] [2024-06-27 22:30:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:14,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:14,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744718249] [2024-06-27 22:30:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744718249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:14,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:30:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263668966] [2024-06-27 22:30:14,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:14,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:30:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:30:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:30:14,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:14,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 689 transitions, 10969 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:14,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:14,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:14,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:16,491 INFO L124 PetriNetUnfolderBase]: 2934/5643 cut-off events. [2024-06-27 22:30:16,491 INFO L125 PetriNetUnfolderBase]: For 632700/632703 co-relation queries the response was YES. [2024-06-27 22:30:16,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46469 conditions, 5643 events. 2934/5643 cut-off events. For 632700/632703 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 42398 event pairs, 1011 based on Foata normal form. 3/5321 useless extension candidates. Maximal degree in co-relation 46228. Up to 4779 conditions per place. [2024-06-27 22:30:16,597 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 656 selfloop transitions, 60 changer transitions 0/724 dead transitions. [2024-06-27 22:30:16,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 724 transitions, 13395 flow [2024-06-27 22:30:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:30:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:30:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-27 22:30:16,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-06-27 22:30:16,598 INFO L175 Difference]: Start difference. First operand has 525 places, 689 transitions, 10969 flow. Second operand 12 states and 183 transitions. [2024-06-27 22:30:16,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 724 transitions, 13395 flow [2024-06-27 22:30:20,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 724 transitions, 13304 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:20,726 INFO L231 Difference]: Finished difference. Result has 529 places, 691 transitions, 11100 flow [2024-06-27 22:30:20,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10878, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11100, PETRI_PLACES=529, PETRI_TRANSITIONS=691} [2024-06-27 22:30:20,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-27 22:30:20,727 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 691 transitions, 11100 flow [2024-06-27 22:30:20,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:20,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:20,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:30:20,728 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:20,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:20,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1912246721, now seen corresponding path program 19 times [2024-06-27 22:30:20,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061177883] [2024-06-27 22:30:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:22,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:22,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061177883] [2024-06-27 22:30:22,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061177883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:22,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:22,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:30:22,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242727682] [2024-06-27 22:30:22,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:22,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:30:22,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:22,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:30:22,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:30:22,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:22,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 691 transitions, 11100 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:22,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:22,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:22,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:25,063 INFO L124 PetriNetUnfolderBase]: 2947/5662 cut-off events. [2024-06-27 22:30:25,064 INFO L125 PetriNetUnfolderBase]: For 643529/643532 co-relation queries the response was YES. [2024-06-27 22:30:25,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46879 conditions, 5662 events. 2947/5662 cut-off events. For 643529/643532 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 42501 event pairs, 1002 based on Foata normal form. 3/5337 useless extension candidates. Maximal degree in co-relation 46637. Up to 4681 conditions per place. [2024-06-27 22:30:25,158 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 626 selfloop transitions, 95 changer transitions 0/729 dead transitions. [2024-06-27 22:30:25,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 729 transitions, 13605 flow [2024-06-27 22:30:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:30:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:30:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 22:30:25,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:30:25,159 INFO L175 Difference]: Start difference. First operand has 529 places, 691 transitions, 11100 flow. Second operand 12 states and 186 transitions. [2024-06-27 22:30:25,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 729 transitions, 13605 flow [2024-06-27 22:30:29,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 729 transitions, 13381 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:29,330 INFO L231 Difference]: Finished difference. Result has 532 places, 693 transitions, 11172 flow [2024-06-27 22:30:29,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10876, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11172, PETRI_PLACES=532, PETRI_TRANSITIONS=693} [2024-06-27 22:30:29,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 491 predicate places. [2024-06-27 22:30:29,331 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 693 transitions, 11172 flow [2024-06-27 22:30:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:29,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:29,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:29,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:30:29,331 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:29,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1912253231, now seen corresponding path program 20 times [2024-06-27 22:30:29,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:29,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54395836] [2024-06-27 22:30:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:31,032 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 22:30:31,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:31,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54395836] [2024-06-27 22:30:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54395836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:31,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137711486] [2024-06-27 22:30:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:31,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:31,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:31,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 693 transitions, 11172 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:31,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:31,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:31,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:33,176 INFO L124 PetriNetUnfolderBase]: 2960/5682 cut-off events. [2024-06-27 22:30:33,177 INFO L125 PetriNetUnfolderBase]: For 651128/651131 co-relation queries the response was YES. [2024-06-27 22:30:33,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47182 conditions, 5682 events. 2960/5682 cut-off events. For 651128/651131 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 42671 event pairs, 1013 based on Foata normal form. 3/5353 useless extension candidates. Maximal degree in co-relation 46939. Up to 4849 conditions per place. [2024-06-27 22:30:33,283 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 643 selfloop transitions, 73 changer transitions 0/724 dead transitions. [2024-06-27 22:30:33,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 724 transitions, 13248 flow [2024-06-27 22:30:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 22:30:33,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 22:30:33,284 INFO L175 Difference]: Start difference. First operand has 532 places, 693 transitions, 11172 flow. Second operand 11 states and 172 transitions. [2024-06-27 22:30:33,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 724 transitions, 13248 flow [2024-06-27 22:30:38,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 724 transitions, 12972 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-27 22:30:38,146 INFO L231 Difference]: Finished difference. Result has 533 places, 695 transitions, 11151 flow [2024-06-27 22:30:38,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10896, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11151, PETRI_PLACES=533, PETRI_TRANSITIONS=695} [2024-06-27 22:30:38,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 492 predicate places. [2024-06-27 22:30:38,147 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 695 transitions, 11151 flow [2024-06-27 22:30:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:38,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:38,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:38,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:30:38,147 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:38,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:38,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2084736611, now seen corresponding path program 21 times [2024-06-27 22:30:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488597711] [2024-06-27 22:30:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:38,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:40,068 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 22:30:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:40,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488597711] [2024-06-27 22:30:40,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488597711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:40,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:40,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:30:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041428429] [2024-06-27 22:30:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:30:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:30:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:30:40,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:40,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 695 transitions, 11151 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:40,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:40,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:40,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:42,197 INFO L124 PetriNetUnfolderBase]: 2973/5700 cut-off events. [2024-06-27 22:30:42,197 INFO L125 PetriNetUnfolderBase]: For 658967/658970 co-relation queries the response was YES. [2024-06-27 22:30:42,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47297 conditions, 5700 events. 2973/5700 cut-off events. For 658967/658970 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 42738 event pairs, 994 based on Foata normal form. 3/5369 useless extension candidates. Maximal degree in co-relation 47053. Up to 4719 conditions per place. [2024-06-27 22:30:42,306 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 611 selfloop transitions, 107 changer transitions 0/726 dead transitions. [2024-06-27 22:30:42,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 726 transitions, 13491 flow [2024-06-27 22:30:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:30:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:30:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-27 22:30:42,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-06-27 22:30:42,307 INFO L175 Difference]: Start difference. First operand has 533 places, 695 transitions, 11151 flow. Second operand 12 states and 183 transitions. [2024-06-27 22:30:42,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 726 transitions, 13491 flow [2024-06-27 22:30:47,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 726 transitions, 13262 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:47,718 INFO L231 Difference]: Finished difference. Result has 536 places, 697 transitions, 11250 flow [2024-06-27 22:30:47,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10922, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11250, PETRI_PLACES=536, PETRI_TRANSITIONS=697} [2024-06-27 22:30:47,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-27 22:30:47,718 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 697 transitions, 11250 flow [2024-06-27 22:30:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:47,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:47,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:47,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:30:47,719 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:47,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1918682507, now seen corresponding path program 26 times [2024-06-27 22:30:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990965828] [2024-06-27 22:30:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990965828] [2024-06-27 22:30:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990965828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387479163] [2024-06-27 22:30:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:49,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:49,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 697 transitions, 11250 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:49,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:49,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:49,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:51,401 INFO L124 PetriNetUnfolderBase]: 2970/5691 cut-off events. [2024-06-27 22:30:51,401 INFO L125 PetriNetUnfolderBase]: For 637489/637492 co-relation queries the response was YES. [2024-06-27 22:30:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46865 conditions, 5691 events. 2970/5691 cut-off events. For 637489/637492 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 42674 event pairs, 1018 based on Foata normal form. 3/5361 useless extension candidates. Maximal degree in co-relation 46620. Up to 4872 conditions per place. [2024-06-27 22:30:51,512 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 654 selfloop transitions, 66 changer transitions 0/728 dead transitions. [2024-06-27 22:30:51,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 728 transitions, 13267 flow [2024-06-27 22:30:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 22:30:51,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 22:30:51,514 INFO L175 Difference]: Start difference. First operand has 536 places, 697 transitions, 11250 flow. Second operand 11 states and 171 transitions. [2024-06-27 22:30:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 728 transitions, 13267 flow [2024-06-27 22:30:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 728 transitions, 12913 flow, removed 59 selfloop flow, removed 11 redundant places. [2024-06-27 22:30:56,956 INFO L231 Difference]: Finished difference. Result has 536 places, 699 transitions, 11099 flow [2024-06-27 22:30:56,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10910, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11099, PETRI_PLACES=536, PETRI_TRANSITIONS=699} [2024-06-27 22:30:56,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-27 22:30:56,956 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 699 transitions, 11099 flow [2024-06-27 22:30:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:56,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:56,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:56,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:30:56,956 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:56,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:56,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2084916101, now seen corresponding path program 22 times [2024-06-27 22:30:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847622871] [2024-06-27 22:30:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847622871] [2024-06-27 22:30:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847622871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:58,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:58,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793531319] [2024-06-27 22:30:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:58,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:58,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:30:58,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 699 transitions, 11099 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:58,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:58,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:30:58,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:01,127 INFO L124 PetriNetUnfolderBase]: 3000/5738 cut-off events. [2024-06-27 22:31:01,128 INFO L125 PetriNetUnfolderBase]: For 675782/675785 co-relation queries the response was YES. [2024-06-27 22:31:01,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47769 conditions, 5738 events. 3000/5738 cut-off events. For 675782/675785 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 42977 event pairs, 1029 based on Foata normal form. 3/5401 useless extension candidates. Maximal degree in co-relation 47523. Up to 4883 conditions per place. [2024-06-27 22:31:01,242 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 642 selfloop transitions, 83 changer transitions 0/733 dead transitions. [2024-06-27 22:31:01,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 733 transitions, 13650 flow [2024-06-27 22:31:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:31:01,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:31:01,243 INFO L175 Difference]: Start difference. First operand has 536 places, 699 transitions, 11099 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:31:01,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 733 transitions, 13650 flow [2024-06-27 22:31:06,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 733 transitions, 13479 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:06,669 INFO L231 Difference]: Finished difference. Result has 538 places, 703 transitions, 11319 flow [2024-06-27 22:31:06,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10928, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11319, PETRI_PLACES=538, PETRI_TRANSITIONS=703} [2024-06-27 22:31:06,670 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 22:31:06,670 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 703 transitions, 11319 flow [2024-06-27 22:31:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:06,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:06,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:06,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:31:06,671 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:06,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1918682321, now seen corresponding path program 23 times [2024-06-27 22:31:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:06,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919567675] [2024-06-27 22:31:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:06,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:08,686 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 22:31:08,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:08,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919567675] [2024-06-27 22:31:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919567675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:08,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529639280] [2024-06-27 22:31:08,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:08,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:08,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:31:08,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 703 transitions, 11319 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:08,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:08,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:31:08,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:10,910 INFO L124 PetriNetUnfolderBase]: 3013/5759 cut-off events. [2024-06-27 22:31:10,911 INFO L125 PetriNetUnfolderBase]: For 687533/687536 co-relation queries the response was YES. [2024-06-27 22:31:11,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48228 conditions, 5759 events. 3013/5759 cut-off events. For 687533/687536 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 43159 event pairs, 1023 based on Foata normal form. 3/5420 useless extension candidates. Maximal degree in co-relation 47981. Up to 4889 conditions per place. [2024-06-27 22:31:11,035 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 652 selfloop transitions, 77 changer transitions 0/737 dead transitions. [2024-06-27 22:31:11,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 737 transitions, 13509 flow [2024-06-27 22:31:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:31:11,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:31:11,036 INFO L175 Difference]: Start difference. First operand has 538 places, 703 transitions, 11319 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:31:11,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 737 transitions, 13509 flow [2024-06-27 22:31:16,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 737 transitions, 13289 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 22:31:16,713 INFO L231 Difference]: Finished difference. Result has 542 places, 705 transitions, 11374 flow [2024-06-27 22:31:16,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11099, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11374, PETRI_PLACES=542, PETRI_TRANSITIONS=705} [2024-06-27 22:31:16,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-27 22:31:16,714 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 705 transitions, 11374 flow [2024-06-27 22:31:16,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:16,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:16,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:31:16,715 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:16,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2084920937, now seen corresponding path program 27 times [2024-06-27 22:31:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784272135] [2024-06-27 22:31:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:18,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:18,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784272135] [2024-06-27 22:31:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784272135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:18,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199195973] [2024-06-27 22:31:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:18,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:31:18,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 705 transitions, 11374 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:18,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:18,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:31:18,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:20,647 INFO L124 PetriNetUnfolderBase]: 3050/5840 cut-off events. [2024-06-27 22:31:20,647 INFO L125 PetriNetUnfolderBase]: For 722666/722669 co-relation queries the response was YES. [2024-06-27 22:31:20,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 5840 events. 3050/5840 cut-off events. For 722666/722669 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 43972 event pairs, 1028 based on Foata normal form. 3/5498 useless extension candidates. Maximal degree in co-relation 48979. Up to 4930 conditions per place. [2024-06-27 22:31:20,758 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 660 selfloop transitions, 71 changer transitions 0/739 dead transitions. [2024-06-27 22:31:20,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 739 transitions, 13740 flow [2024-06-27 22:31:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:31:20,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:31:20,759 INFO L175 Difference]: Start difference. First operand has 542 places, 705 transitions, 11374 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:31:20,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 739 transitions, 13740 flow [2024-06-27 22:31:27,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 739 transitions, 13491 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:27,055 INFO L231 Difference]: Finished difference. Result has 544 places, 707 transitions, 11349 flow [2024-06-27 22:31:27,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11125, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11349, PETRI_PLACES=544, PETRI_TRANSITIONS=707} [2024-06-27 22:31:27,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-27 22:31:27,055 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 707 transitions, 11349 flow [2024-06-27 22:31:27,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:27,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:27,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:27,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:31:27,056 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:27,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:27,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2084743307, now seen corresponding path program 28 times [2024-06-27 22:31:27,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:27,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783438494] [2024-06-27 22:31:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:27,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783438494] [2024-06-27 22:31:28,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783438494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:28,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:28,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:31:28,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599478148] [2024-06-27 22:31:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:31:28,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:31:28,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:31:29,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:31:29,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 707 transitions, 11349 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:29,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:29,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:31:29,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:31,137 INFO L124 PetriNetUnfolderBase]: 3051/5852 cut-off events. [2024-06-27 22:31:31,137 INFO L125 PetriNetUnfolderBase]: For 699329/699332 co-relation queries the response was YES. [2024-06-27 22:31:31,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48721 conditions, 5852 events. 3051/5852 cut-off events. For 699329/699332 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 44109 event pairs, 1050 based on Foata normal form. 3/5506 useless extension candidates. Maximal degree in co-relation 48471. Up to 5000 conditions per place. [2024-06-27 22:31:31,252 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 654 selfloop transitions, 74 changer transitions 0/736 dead transitions. [2024-06-27 22:31:31,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 736 transitions, 13310 flow [2024-06-27 22:31:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:31:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:31:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-27 22:31:31,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765765765765766 [2024-06-27 22:31:31,253 INFO L175 Difference]: Start difference. First operand has 544 places, 707 transitions, 11349 flow. Second operand 12 states and 181 transitions. [2024-06-27 22:31:31,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 736 transitions, 13310 flow [2024-06-27 22:31:37,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 736 transitions, 13135 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 22:31:37,539 INFO L231 Difference]: Finished difference. Result has 549 places, 708 transitions, 11368 flow [2024-06-27 22:31:37,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11202, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11368, PETRI_PLACES=549, PETRI_TRANSITIONS=708} [2024-06-27 22:31:37,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 508 predicate places. [2024-06-27 22:31:37,539 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 708 transitions, 11368 flow [2024-06-27 22:31:37,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:37,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:37,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:37,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:31:37,540 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:37,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:37,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2084743121, now seen corresponding path program 24 times [2024-06-27 22:31:37,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:37,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052120564] [2024-06-27 22:31:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:37,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052120564] [2024-06-27 22:31:39,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052120564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:39,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:39,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:39,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017712032] [2024-06-27 22:31:39,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:39,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:39,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:39,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:31:39,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 708 transitions, 11368 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:39,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:39,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:31:39,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:41,464 INFO L124 PetriNetUnfolderBase]: 3047/5848 cut-off events. [2024-06-27 22:31:41,464 INFO L125 PetriNetUnfolderBase]: For 673820/673823 co-relation queries the response was YES. [2024-06-27 22:31:41,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48042 conditions, 5848 events. 3047/5848 cut-off events. For 673820/673823 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 44138 event pairs, 1043 based on Foata normal form. 3/5502 useless extension candidates. Maximal degree in co-relation 47790. Up to 4990 conditions per place. [2024-06-27 22:31:41,575 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 647 selfloop transitions, 80 changer transitions 0/735 dead transitions. [2024-06-27 22:31:41,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 735 transitions, 13329 flow [2024-06-27 22:31:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:31:41,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:31:41,576 INFO L175 Difference]: Start difference. First operand has 549 places, 708 transitions, 11368 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:31:41,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 735 transitions, 13329 flow [2024-06-27 22:31:46,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 735 transitions, 13162 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:46,113 INFO L231 Difference]: Finished difference. Result has 551 places, 708 transitions, 11366 flow [2024-06-27 22:31:46,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11201, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11366, PETRI_PLACES=551, PETRI_TRANSITIONS=708} [2024-06-27 22:31:46,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 510 predicate places. [2024-06-27 22:31:46,114 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 708 transitions, 11366 flow [2024-06-27 22:31:46,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:46,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:46,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:31:46,115 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:46,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2089504907, now seen corresponding path program 29 times [2024-06-27 22:31:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:46,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593267734] [2024-06-27 22:31:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:46,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593267734] [2024-06-27 22:31:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593267734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:47,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:31:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385060303] [2024-06-27 22:31:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:47,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:31:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:31:47,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:31:48,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:31:48,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 708 transitions, 11366 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:48,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:48,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:31:48,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:50,239 INFO L124 PetriNetUnfolderBase]: 3064/5871 cut-off events. [2024-06-27 22:31:50,240 INFO L125 PetriNetUnfolderBase]: For 681743/681746 co-relation queries the response was YES. [2024-06-27 22:31:50,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48328 conditions, 5871 events. 3064/5871 cut-off events. For 681743/681746 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 44254 event pairs, 1021 based on Foata normal form. 3/5536 useless extension candidates. Maximal degree in co-relation 48075. Up to 4581 conditions per place. [2024-06-27 22:31:50,352 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 638 selfloop transitions, 98 changer transitions 0/744 dead transitions. [2024-06-27 22:31:50,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 744 transitions, 13735 flow [2024-06-27 22:31:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:31:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:31:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 22:31:50,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-27 22:31:50,357 INFO L175 Difference]: Start difference. First operand has 551 places, 708 transitions, 11366 flow. Second operand 12 states and 189 transitions. [2024-06-27 22:31:50,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 744 transitions, 13735 flow [2024-06-27 22:31:55,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 744 transitions, 13565 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:31:55,128 INFO L231 Difference]: Finished difference. Result has 553 places, 709 transitions, 11436 flow [2024-06-27 22:31:55,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11196, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11436, PETRI_PLACES=553, PETRI_TRANSITIONS=709} [2024-06-27 22:31:55,129 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 512 predicate places. [2024-06-27 22:31:55,129 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 709 transitions, 11436 flow [2024-06-27 22:31:55,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:55,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:55,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:31:55,130 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2089384937, now seen corresponding path program 30 times [2024-06-27 22:31:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:55,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053433144] [2024-06-27 22:31:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053433144] [2024-06-27 22:31:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053433144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:56,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:56,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:31:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038035282] [2024-06-27 22:31:56,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:56,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:31:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:31:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:31:57,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:31:57,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 709 transitions, 11436 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:57,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:57,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:31:57,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:59,183 INFO L124 PetriNetUnfolderBase]: 3081/5926 cut-off events. [2024-06-27 22:31:59,183 INFO L125 PetriNetUnfolderBase]: For 692429/692432 co-relation queries the response was YES. [2024-06-27 22:31:59,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48979 conditions, 5926 events. 3081/5926 cut-off events. For 692429/692432 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 44914 event pairs, 1057 based on Foata normal form. 3/5575 useless extension candidates. Maximal degree in co-relation 48725. Up to 4993 conditions per place. [2024-06-27 22:31:59,301 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 640 selfloop transitions, 88 changer transitions 0/736 dead transitions. [2024-06-27 22:31:59,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 736 transitions, 13365 flow [2024-06-27 22:31:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:31:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:31:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-27 22:31:59,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:31:59,302 INFO L175 Difference]: Start difference. First operand has 553 places, 709 transitions, 11436 flow. Second operand 12 states and 180 transitions. [2024-06-27 22:31:59,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 736 transitions, 13365 flow [2024-06-27 22:32:04,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 736 transitions, 13099 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 22:32:04,338 INFO L231 Difference]: Finished difference. Result has 555 places, 710 transitions, 11394 flow [2024-06-27 22:32:04,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11181, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11394, PETRI_PLACES=555, PETRI_TRANSITIONS=710} [2024-06-27 22:32:04,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 514 predicate places. [2024-06-27 22:32:04,339 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 710 transitions, 11394 flow [2024-06-27 22:32:04,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:04,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:04,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:32:04,340 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:04,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2089384751, now seen corresponding path program 25 times [2024-06-27 22:32:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:04,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686011079] [2024-06-27 22:32:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:06,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686011079] [2024-06-27 22:32:06,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686011079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:06,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:32:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791359480] [2024-06-27 22:32:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:06,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:32:06,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:32:06,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:32:06,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:06,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 710 transitions, 11394 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:06,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:06,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:06,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:08,693 INFO L124 PetriNetUnfolderBase]: 3103/5957 cut-off events. [2024-06-27 22:32:08,693 INFO L125 PetriNetUnfolderBase]: For 714636/714639 co-relation queries the response was YES. [2024-06-27 22:32:08,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49235 conditions, 5957 events. 3103/5957 cut-off events. For 714636/714639 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 45106 event pairs, 1035 based on Foata normal form. 3/5600 useless extension candidates. Maximal degree in co-relation 48981. Up to 4668 conditions per place. [2024-06-27 22:32:08,793 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 593 selfloop transitions, 143 changer transitions 0/744 dead transitions. [2024-06-27 22:32:08,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 744 transitions, 14274 flow [2024-06-27 22:32:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:32:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:32:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-27 22:32:08,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-27 22:32:08,794 INFO L175 Difference]: Start difference. First operand has 555 places, 710 transitions, 11394 flow. Second operand 12 states and 187 transitions. [2024-06-27 22:32:08,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 744 transitions, 14274 flow [2024-06-27 22:32:14,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 744 transitions, 13999 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 22:32:14,697 INFO L231 Difference]: Finished difference. Result has 556 places, 714 transitions, 11646 flow [2024-06-27 22:32:14,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11127, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11646, PETRI_PLACES=556, PETRI_TRANSITIONS=714} [2024-06-27 22:32:14,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-27 22:32:14,698 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 714 transitions, 11646 flow [2024-06-27 22:32:14,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:14,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:14,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:32:14,699 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:14,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2089389587, now seen corresponding path program 31 times [2024-06-27 22:32:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786868987] [2024-06-27 22:32:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786868987] [2024-06-27 22:32:16,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786868987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:16,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:16,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:32:16,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485314705] [2024-06-27 22:32:16,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:16,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:32:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:32:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:32:16,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:16,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 714 transitions, 11646 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:16,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:16,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:18,818 INFO L124 PetriNetUnfolderBase]: 3120/5989 cut-off events. [2024-06-27 22:32:18,818 INFO L125 PetriNetUnfolderBase]: For 724706/724709 co-relation queries the response was YES. [2024-06-27 22:32:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49523 conditions, 5989 events. 3120/5989 cut-off events. For 724706/724709 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 45467 event pairs, 1053 based on Foata normal form. 3/5633 useless extension candidates. Maximal degree in co-relation 49269. Up to 5004 conditions per place. [2024-06-27 22:32:18,941 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 648 selfloop transitions, 89 changer transitions 0/745 dead transitions. [2024-06-27 22:32:18,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 745 transitions, 13628 flow [2024-06-27 22:32:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:32:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:32:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-27 22:32:18,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 22:32:18,943 INFO L175 Difference]: Start difference. First operand has 556 places, 714 transitions, 11646 flow. Second operand 12 states and 185 transitions. [2024-06-27 22:32:18,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 745 transitions, 13628 flow [2024-06-27 22:32:24,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 745 transitions, 13374 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 22:32:24,967 INFO L231 Difference]: Finished difference. Result has 560 places, 715 transitions, 11609 flow [2024-06-27 22:32:24,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11392, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11609, PETRI_PLACES=560, PETRI_TRANSITIONS=715} [2024-06-27 22:32:24,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 519 predicate places. [2024-06-27 22:32:24,968 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 715 transitions, 11609 flow [2024-06-27 22:32:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:24,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:24,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:24,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:32:24,968 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:24,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:24,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1093529819, now seen corresponding path program 32 times [2024-06-27 22:32:24,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:24,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13507768] [2024-06-27 22:32:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:24,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:26,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13507768] [2024-06-27 22:32:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13507768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:26,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:26,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:32:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113137967] [2024-06-27 22:32:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:32:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:32:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:32:26,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:26,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 715 transitions, 11609 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:26,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:26,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:26,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15