./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix009.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:28:18,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:28:18,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:28:18,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:28:18,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:28:18,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:28:18,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:28:18,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:28:18,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:28:18,171 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:28:18,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:28:18,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:28:18,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:28:18,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:28:18,173 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:28:18,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:28:18,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:28:18,175 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:28:18,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:28:18,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:28:18,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:28:18,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:28:18,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:28:18,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:28:18,177 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:28:18,177 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:28:18,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:28:18,178 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:28:18,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:28:18,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:28:18,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:28:18,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:28:18,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:28:18,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:28:18,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:28:18,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:28:18,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:28:18,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:28:18,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:28:18,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:28:18,181 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:28:18,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:28:18,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:28:18,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:28:18,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:28:18,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:28:18,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:28:18,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:28:18,429 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:28:18,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-21 18:28:19,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:28:19,747 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:28:19,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-21 18:28:19,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df31dd7d/69cc38d2272942e083210887986dfcda/FLAG6b8199e75 [2024-06-21 18:28:19,775 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0df31dd7d/69cc38d2272942e083210887986dfcda [2024-06-21 18:28:19,777 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:28:19,778 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:28:19,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.oepc.yml/witness.yml [2024-06-21 18:28:19,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:28:19,878 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:28:19,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:28:19,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:28:19,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:28:19,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:28:19" (1/2) ... [2024-06-21 18:28:19,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379a9310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:19, skipping insertion in model container [2024-06-21 18:28:19,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:28:19" (1/2) ... [2024-06-21 18:28:19,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62c343c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:19, skipping insertion in model container [2024-06-21 18:28:19,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:28:19" (2/2) ... [2024-06-21 18:28:19,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379a9310 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:19, skipping insertion in model container [2024-06-21 18:28:19,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:28:19" (2/2) ... [2024-06-21 18:28:19,885 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:28:19,905 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:28:19,905 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 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$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$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$w_buff1_used >= 0LL) [2024-06-21 18:28:19,906 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z$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_p0_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (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) [2024-06-21 18:28:19,906 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:28:19,906 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-21 18:28:19,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:28:20,260 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:28:20,270 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:28:20,409 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:28:20,455 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:28:20,458 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20 WrapperNode [2024-06-21 18:28:20,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:28:20,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:28:20,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:28:20,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:28:20,466 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 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,494 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 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,605 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 122 [2024-06-21 18:28:20,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:28:20,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:28:20,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:28:20,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:28:20,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,692 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]. [2024-06-21 18:28:20,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:28:20,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:28:20,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:28:20,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:28:20,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (1/1) ... [2024-06-21 18:28:20,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:28:20,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:28:20,798 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) [2024-06-21 18:28:20,880 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 [2024-06-21 18:28:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:28:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:28:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:28:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:28:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:28:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:28:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:28:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:28:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:28:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:28:20,917 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:28:21,022 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:28:21,024 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:28:21,453 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:28:21,476 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:28:21,615 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:28:21,616 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:28:21,617 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:28:21 BoogieIcfgContainer [2024-06-21 18:28:21,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:28:21,619 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:28:21,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:28:21,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:28:21,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:28:19" (1/4) ... [2024-06-21 18:28:21,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98b52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:28:21, skipping insertion in model container [2024-06-21 18:28:21,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:28:19" (2/4) ... [2024-06-21 18:28:21,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98b52c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:28:21, skipping insertion in model container [2024-06-21 18:28:21,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:20" (3/4) ... [2024-06-21 18:28:21,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98b52c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:28:21, skipping insertion in model container [2024-06-21 18:28:21,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:28:21" (4/4) ... [2024-06-21 18:28:21,626 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-21 18:28:21,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:28:21,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 18:28:21,640 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:28:21,686 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:28:21,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 18:28:21,740 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 18:28:21,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:28:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:28:21,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 18:28:21,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 18:28:21,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:28:21,756 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;@1b341d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:28:21,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 18:28:21,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:28:21,760 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:28:21,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:28:21,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:21,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:28:21,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:21,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash 337095837, now seen corresponding path program 1 times [2024-06-21 18:28:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538451020] [2024-06-21 18:28:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:23,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:23,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538451020] [2024-06-21 18:28:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538451020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:28:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655532105] [2024-06-21 18:28:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:23,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:28:23,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:23,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:28:23,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:28:23,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 18:28:23,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:23,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:23,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 18:28:23,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:23,260 INFO L124 PetriNetUnfolderBase]: 162/314 cut-off events. [2024-06-21 18:28:23,261 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 18:28:23,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 314 events. 162/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1238 event pairs, 97 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 614. Up to 288 conditions per place. [2024-06-21 18:28:23,266 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 18:28:23,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-21 18:28:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:28:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:28:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-21 18:28:23,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-21 18:28:23,277 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-21 18:28:23,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-21 18:28:23,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:23,281 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 18:28:23,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 18:28:23,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 18:28:23,285 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 18:28:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:23,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:23,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:23,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:28:23,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:23,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1826570300, now seen corresponding path program 1 times [2024-06-21 18:28:23,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576675952] [2024-06-21 18:28:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:24,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:24,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576675952] [2024-06-21 18:28:24,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576675952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:24,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:28:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821332913] [2024-06-21 18:28:24,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:28:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:24,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:28:24,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:28:24,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 18:28:24,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:24,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:24,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 18:28:24,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:24,337 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-21 18:28:24,337 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-06-21 18:28:24,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 309 events. 159/309 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1225 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 685. Up to 274 conditions per place. [2024-06-21 18:28:24,342 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-21 18:28:24,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2024-06-21 18:28:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:28:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:28:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-06-21 18:28:24,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-21 18:28:24,346 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 76 transitions. [2024-06-21 18:28:24,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2024-06-21 18:28:24,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:28:24,350 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 18:28:24,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 18:28:24,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 18:28:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 18:28:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:24,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:24,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:24,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:28:24,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:24,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash 789105080, now seen corresponding path program 1 times [2024-06-21 18:28:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989722636] [2024-06-21 18:28:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:25,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989722636] [2024-06-21 18:28:25,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989722636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:25,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:25,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:28:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233771264] [2024-06-21 18:28:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:25,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:28:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:28:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:28:25,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 18:28:25,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:25,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:25,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 18:28:25,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:25,391 INFO L124 PetriNetUnfolderBase]: 187/359 cut-off events. [2024-06-21 18:28:25,391 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-06-21 18:28:25,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 359 events. 187/359 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1389 event pairs, 83 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 878. Up to 313 conditions per place. [2024-06-21 18:28:25,393 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-21 18:28:25,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 209 flow [2024-06-21 18:28:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:28:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:28:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-21 18:28:25,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-21 18:28:25,397 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 89 transitions. [2024-06-21 18:28:25,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 209 flow [2024-06-21 18:28:25,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:25,399 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-21 18:28:25,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 18:28:25,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 18:28:25,401 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-21 18:28:25,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:25,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:25,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:25,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:28:25,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:25,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash -670316147, now seen corresponding path program 1 times [2024-06-21 18:28:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374918131] [2024-06-21 18:28:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:26,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374918131] [2024-06-21 18:28:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374918131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:26,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:26,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440904810] [2024-06-21 18:28:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:26,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 18:28:26,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:26,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:26,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 18:28:26,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:26,521 INFO L124 PetriNetUnfolderBase]: 184/356 cut-off events. [2024-06-21 18:28:26,522 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-21 18:28:26,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 356 events. 184/356 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 65 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 948. Up to 299 conditions per place. [2024-06-21 18:28:26,524 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-21 18:28:26,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 257 flow [2024-06-21 18:28:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:28:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:28:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 18:28:26,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-21 18:28:26,527 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 105 transitions. [2024-06-21 18:28:26,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 257 flow [2024-06-21 18:28:26,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 242 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:26,530 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-21 18:28:26,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-21 18:28:26,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-21 18:28:26,531 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-21 18:28:26,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:26,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:26,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:26,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:28:26,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2063748116, now seen corresponding path program 1 times [2024-06-21 18:28:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:26,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370371323] [2024-06-21 18:28:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:27,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370371323] [2024-06-21 18:28:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370371323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:28:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617465997] [2024-06-21 18:28:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:27,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:28:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:28:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:28:27,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:27,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:27,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:27,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:27,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:28,022 INFO L124 PetriNetUnfolderBase]: 230/423 cut-off events. [2024-06-21 18:28:28,023 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-06-21 18:28:28,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 423 events. 230/423 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1590 event pairs, 100 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1230. Up to 402 conditions per place. [2024-06-21 18:28:28,025 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-21 18:28:28,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 243 flow [2024-06-21 18:28:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:28:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:28:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-06-21 18:28:28,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 18:28:28,026 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 67 transitions. [2024-06-21 18:28:28,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 243 flow [2024-06-21 18:28:28,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 220 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:28,028 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 168 flow [2024-06-21 18:28:28,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-21 18:28:28,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-21 18:28:28,044 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 168 flow [2024-06-21 18:28:28,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:28,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:28,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:28,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:28:28,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:28,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1874082682, now seen corresponding path program 1 times [2024-06-21 18:28:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:28,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230402092] [2024-06-21 18:28:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230402092] [2024-06-21 18:28:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230402092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767312475] [2024-06-21 18:28:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:30,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:30,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 18:28:30,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-21 18:28:30,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:30,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 18:28:30,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:30,528 INFO L124 PetriNetUnfolderBase]: 223/414 cut-off events. [2024-06-21 18:28:30,529 INFO L125 PetriNetUnfolderBase]: For 890/890 co-relation queries the response was YES. [2024-06-21 18:28:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 414 events. 223/414 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1558 event pairs, 58 based on Foata normal form. 2/415 useless extension candidates. Maximal degree in co-relation 1270. Up to 338 conditions per place. [2024-06-21 18:28:30,532 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 14 changer transitions 0/63 dead transitions. [2024-06-21 18:28:30,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 370 flow [2024-06-21 18:28:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-21 18:28:30,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-21 18:28:30,533 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 168 flow. Second operand 8 states and 130 transitions. [2024-06-21 18:28:30,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 370 flow [2024-06-21 18:28:30,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:30,535 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 219 flow [2024-06-21 18:28:30,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=219, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-21 18:28:30,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-21 18:28:30,536 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 219 flow [2024-06-21 18:28:30,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-21 18:28:30,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:30,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:30,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:28:30,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:30,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 448318990, now seen corresponding path program 1 times [2024-06-21 18:28:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:30,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082569160] [2024-06-21 18:28:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:32,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:32,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082569160] [2024-06-21 18:28:32,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082569160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:32,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285737532] [2024-06-21 18:28:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:32,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:32,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:32,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:32,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:32,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:32,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:33,010 INFO L124 PetriNetUnfolderBase]: 220/408 cut-off events. [2024-06-21 18:28:33,010 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2024-06-21 18:28:33,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 408 events. 220/408 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 58 based on Foata normal form. 3/410 useless extension candidates. Maximal degree in co-relation 1375. Up to 379 conditions per place. [2024-06-21 18:28:33,013 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-21 18:28:33,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 333 flow [2024-06-21 18:28:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-21 18:28:33,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-21 18:28:33,015 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 219 flow. Second operand 7 states and 86 transitions. [2024-06-21 18:28:33,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 333 flow [2024-06-21 18:28:33,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 302 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:33,018 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 225 flow [2024-06-21 18:28:33,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-21 18:28:33,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-21 18:28:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 225 flow [2024-06-21 18:28:33,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:33,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:33,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:33,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:28:33,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:33,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash 458598549, now seen corresponding path program 1 times [2024-06-21 18:28:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:33,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68202923] [2024-06-21 18:28:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:34,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68202923] [2024-06-21 18:28:34,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68202923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:34,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:34,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791127179] [2024-06-21 18:28:34,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:34,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:34,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:34,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:34,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:34,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:34,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:34,323 INFO L124 PetriNetUnfolderBase]: 234/431 cut-off events. [2024-06-21 18:28:34,323 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-06-21 18:28:34,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 431 events. 234/431 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1600 event pairs, 59 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1508. Up to 396 conditions per place. [2024-06-21 18:28:34,326 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-21 18:28:34,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 385 flow [2024-06-21 18:28:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:28:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:28:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-21 18:28:34,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 18:28:34,327 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 225 flow. Second operand 6 states and 81 transitions. [2024-06-21 18:28:34,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 385 flow [2024-06-21 18:28:34,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 362 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:34,331 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 273 flow [2024-06-21 18:28:34,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-21 18:28:34,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-21 18:28:34,333 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 273 flow [2024-06-21 18:28:34,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:34,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:34,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:34,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:28:34,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:34,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:34,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1032092349, now seen corresponding path program 2 times [2024-06-21 18:28:34,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593500448] [2024-06-21 18:28:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:34,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593500448] [2024-06-21 18:28:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593500448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:35,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466671676] [2024-06-21 18:28:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:35,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:35,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:35,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:35,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:35,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:35,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:35,588 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2024-06-21 18:28:35,589 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2024-06-21 18:28:35,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 428 events. 232/428 cut-off events. For 1745/1745 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1585 event pairs, 58 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1591. Up to 402 conditions per place. [2024-06-21 18:28:35,591 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-21 18:28:35,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 383 flow [2024-06-21 18:28:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:28:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:28:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-21 18:28:35,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 18:28:35,593 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 273 flow. Second operand 6 states and 77 transitions. [2024-06-21 18:28:35,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 383 flow [2024-06-21 18:28:35,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 368 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:35,600 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 283 flow [2024-06-21 18:28:35,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-21 18:28:35,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-21 18:28:35,601 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 283 flow [2024-06-21 18:28:35,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:35,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:35,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:28:35,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:35,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2032978250, now seen corresponding path program 1 times [2024-06-21 18:28:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063416389] [2024-06-21 18:28:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:37,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:37,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063416389] [2024-06-21 18:28:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063416389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:37,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:37,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:28:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351144677] [2024-06-21 18:28:37,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:37,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:28:37,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:37,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:28:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:28:37,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 18:28:37,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:37,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:37,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 18:28:37,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:37,506 INFO L124 PetriNetUnfolderBase]: 226/418 cut-off events. [2024-06-21 18:28:37,507 INFO L125 PetriNetUnfolderBase]: For 2179/2179 co-relation queries the response was YES. [2024-06-21 18:28:37,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 418 events. 226/418 cut-off events. For 2179/2179 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1529 event pairs, 35 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 1583. Up to 314 conditions per place. [2024-06-21 18:28:37,510 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 48 selfloop transitions, 18 changer transitions 0/72 dead transitions. [2024-06-21 18:28:37,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 475 flow [2024-06-21 18:28:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:28:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:28:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 18:28:37,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 18:28:37,511 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 283 flow. Second operand 10 states and 140 transitions. [2024-06-21 18:28:37,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 475 flow [2024-06-21 18:28:37,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 456 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:37,514 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 292 flow [2024-06-21 18:28:37,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-06-21 18:28:37,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-21 18:28:37,515 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 292 flow [2024-06-21 18:28:37,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:37,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:37,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:37,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:28:37,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:37,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2018282413, now seen corresponding path program 3 times [2024-06-21 18:28:37,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:37,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927733131] [2024-06-21 18:28:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:37,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927733131] [2024-06-21 18:28:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927733131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:39,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:39,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57509301] [2024-06-21 18:28:39,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:39,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:39,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:39,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:39,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:39,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:39,429 INFO L124 PetriNetUnfolderBase]: 226/417 cut-off events. [2024-06-21 18:28:39,430 INFO L125 PetriNetUnfolderBase]: For 2437/2437 co-relation queries the response was YES. [2024-06-21 18:28:39,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 417 events. 226/417 cut-off events. For 2437/2437 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1509 event pairs, 54 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1659. Up to 374 conditions per place. [2024-06-21 18:28:39,433 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-21 18:28:39,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 454 flow [2024-06-21 18:28:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 18:28:39,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:28:39,434 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 292 flow. Second operand 7 states and 91 transitions. [2024-06-21 18:28:39,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 454 flow [2024-06-21 18:28:39,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 408 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:28:39,438 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 327 flow [2024-06-21 18:28:39,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-21 18:28:39,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-21 18:28:39,439 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 327 flow [2024-06-21 18:28:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:39,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:39,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:28:39,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:39,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1103573389, now seen corresponding path program 1 times [2024-06-21 18:28:39,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:39,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132638782] [2024-06-21 18:28:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:40,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:40,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132638782] [2024-06-21 18:28:40,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132638782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:40,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:40,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:40,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981347815] [2024-06-21 18:28:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:40,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:40,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:40,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:40,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:40,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:40,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:40,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:40,999 INFO L124 PetriNetUnfolderBase]: 254/454 cut-off events. [2024-06-21 18:28:40,999 INFO L125 PetriNetUnfolderBase]: For 3072/3072 co-relation queries the response was YES. [2024-06-21 18:28:41,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 454 events. 254/454 cut-off events. For 3072/3072 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1628 event pairs, 55 based on Foata normal form. 1/454 useless extension candidates. Maximal degree in co-relation 1865. Up to 416 conditions per place. [2024-06-21 18:28:41,002 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-21 18:28:41,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 536 flow [2024-06-21 18:28:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-21 18:28:41,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-21 18:28:41,004 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 327 flow. Second operand 7 states and 86 transitions. [2024-06-21 18:28:41,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 536 flow [2024-06-21 18:28:41,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 504 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:41,010 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 386 flow [2024-06-21 18:28:41,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-21 18:28:41,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-21 18:28:41,011 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 386 flow [2024-06-21 18:28:41,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:41,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:41,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:41,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:28:41,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:41,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:41,012 INFO L85 PathProgramCache]: Analyzing trace with hash -375418677, now seen corresponding path program 2 times [2024-06-21 18:28:41,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:41,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338116744] [2024-06-21 18:28:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:42,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338116744] [2024-06-21 18:28:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338116744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:42,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772113469] [2024-06-21 18:28:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:42,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:42,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:42,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:42,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:42,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:42,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:42,346 INFO L124 PetriNetUnfolderBase]: 257/459 cut-off events. [2024-06-21 18:28:42,346 INFO L125 PetriNetUnfolderBase]: For 3661/3661 co-relation queries the response was YES. [2024-06-21 18:28:42,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 459 events. 257/459 cut-off events. For 3661/3661 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1661 event pairs, 55 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 1993. Up to 420 conditions per place. [2024-06-21 18:28:42,349 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2024-06-21 18:28:42,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 578 flow [2024-06-21 18:28:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-21 18:28:42,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-21 18:28:42,350 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 386 flow. Second operand 7 states and 86 transitions. [2024-06-21 18:28:42,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 578 flow [2024-06-21 18:28:42,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 550 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:42,355 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 419 flow [2024-06-21 18:28:42,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-06-21 18:28:42,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-21 18:28:42,356 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 419 flow [2024-06-21 18:28:42,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:42,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:42,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:42,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:28:42,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:42,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash -375418429, now seen corresponding path program 1 times [2024-06-21 18:28:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:42,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906130496] [2024-06-21 18:28:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:42,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:43,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906130496] [2024-06-21 18:28:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906130496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:43,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:43,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049289047] [2024-06-21 18:28:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:43,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:43,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:43,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:43,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:43,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 419 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:43,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:43,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:43,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:43,819 INFO L124 PetriNetUnfolderBase]: 268/485 cut-off events. [2024-06-21 18:28:43,820 INFO L125 PetriNetUnfolderBase]: For 4680/4686 co-relation queries the response was YES. [2024-06-21 18:28:43,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 485 events. 268/485 cut-off events. For 4680/4686 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1833 event pairs, 59 based on Foata normal form. 7/491 useless extension candidates. Maximal degree in co-relation 2156. Up to 414 conditions per place. [2024-06-21 18:28:43,823 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-21 18:28:43,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 641 flow [2024-06-21 18:28:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-21 18:28:43,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 18:28:43,825 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 419 flow. Second operand 7 states and 96 transitions. [2024-06-21 18:28:43,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 641 flow [2024-06-21 18:28:43,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 608 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:43,830 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 470 flow [2024-06-21 18:28:43,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-06-21 18:28:43,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-21 18:28:43,831 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 470 flow [2024-06-21 18:28:43,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:43,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:43,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:28:43,832 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:43,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:43,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1930101263, now seen corresponding path program 2 times [2024-06-21 18:28:43,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415562233] [2024-06-21 18:28:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:44,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415562233] [2024-06-21 18:28:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415562233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:44,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:44,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720177933] [2024-06-21 18:28:44,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:44,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:44,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:44,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:44,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:44,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:44,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:45,145 INFO L124 PetriNetUnfolderBase]: 277/500 cut-off events. [2024-06-21 18:28:45,145 INFO L125 PetriNetUnfolderBase]: For 5490/5496 co-relation queries the response was YES. [2024-06-21 18:28:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 500 events. 277/500 cut-off events. For 5490/5496 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1901 event pairs, 57 based on Foata normal form. 7/506 useless extension candidates. Maximal degree in co-relation 2353. Up to 456 conditions per place. [2024-06-21 18:28:45,148 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-21 18:28:45,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 640 flow [2024-06-21 18:28:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 18:28:45,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-21 18:28:45,150 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 470 flow. Second operand 7 states and 88 transitions. [2024-06-21 18:28:45,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 640 flow [2024-06-21 18:28:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 626 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:45,155 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 505 flow [2024-06-21 18:28:45,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-21 18:28:45,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-21 18:28:45,156 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 505 flow [2024-06-21 18:28:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:45,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:45,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:45,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:28:45,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:45,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1337549903, now seen corresponding path program 3 times [2024-06-21 18:28:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322530519] [2024-06-21 18:28:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322530519] [2024-06-21 18:28:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322530519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:46,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:46,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001143224] [2024-06-21 18:28:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:46,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:46,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:46,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:46,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:46,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:46,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:46,643 INFO L124 PetriNetUnfolderBase]: 271/491 cut-off events. [2024-06-21 18:28:46,643 INFO L125 PetriNetUnfolderBase]: For 5901/5907 co-relation queries the response was YES. [2024-06-21 18:28:46,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 491 events. 271/491 cut-off events. For 5901/5907 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1851 event pairs, 55 based on Foata normal form. 7/497 useless extension candidates. Maximal degree in co-relation 2340. Up to 435 conditions per place. [2024-06-21 18:28:46,647 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-21 18:28:46,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 77 transitions, 669 flow [2024-06-21 18:28:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-21 18:28:46,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-21 18:28:46,648 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 505 flow. Second operand 7 states and 92 transitions. [2024-06-21 18:28:46,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 77 transitions, 669 flow [2024-06-21 18:28:46,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 632 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:46,654 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 503 flow [2024-06-21 18:28:46,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-06-21 18:28:46,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-21 18:28:46,655 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 503 flow [2024-06-21 18:28:46,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:46,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:46,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:46,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:28:46,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:46,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1339928239, now seen corresponding path program 3 times [2024-06-21 18:28:46,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:46,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693335730] [2024-06-21 18:28:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:46,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693335730] [2024-06-21 18:28:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693335730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:47,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:47,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380614568] [2024-06-21 18:28:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:47,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:47,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:47,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:47,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:47,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:47,909 INFO L124 PetriNetUnfolderBase]: 282/501 cut-off events. [2024-06-21 18:28:47,909 INFO L125 PetriNetUnfolderBase]: For 6215/6215 co-relation queries the response was YES. [2024-06-21 18:28:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 501 events. 282/501 cut-off events. For 6215/6215 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1846 event pairs, 55 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 2418. Up to 482 conditions per place. [2024-06-21 18:28:47,912 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-21 18:28:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 659 flow [2024-06-21 18:28:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 18:28:47,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-21 18:28:47,913 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 503 flow. Second operand 7 states and 80 transitions. [2024-06-21 18:28:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 659 flow [2024-06-21 18:28:47,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 610 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 18:28:47,921 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 483 flow [2024-06-21 18:28:47,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=84, PETRI_TRANSITIONS=67} [2024-06-21 18:28:47,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-21 18:28:47,922 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 483 flow [2024-06-21 18:28:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:47,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:47,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:47,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:28:47,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:47,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1128913915, now seen corresponding path program 4 times [2024-06-21 18:28:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:47,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897213911] [2024-06-21 18:28:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:47,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:49,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897213911] [2024-06-21 18:28:49,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897213911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:49,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:49,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:49,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671692040] [2024-06-21 18:28:49,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:49,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:49,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:49,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:49,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 67 transitions, 483 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:49,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:49,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:49,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:49,390 INFO L124 PetriNetUnfolderBase]: 289/513 cut-off events. [2024-06-21 18:28:49,391 INFO L125 PetriNetUnfolderBase]: For 6857/6857 co-relation queries the response was YES. [2024-06-21 18:28:49,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 513 events. 289/513 cut-off events. For 6857/6857 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1907 event pairs, 54 based on Foata normal form. 1/513 useless extension candidates. Maximal degree in co-relation 2473. Up to 446 conditions per place. [2024-06-21 18:28:49,394 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 30 changer transitions 0/87 dead transitions. [2024-06-21 18:28:49,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 774 flow [2024-06-21 18:28:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 18:28:49,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-21 18:28:49,395 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 483 flow. Second operand 8 states and 99 transitions. [2024-06-21 18:28:49,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 774 flow [2024-06-21 18:28:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 751 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:49,403 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 606 flow [2024-06-21 18:28:49,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-21 18:28:49,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-21 18:28:49,404 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 606 flow [2024-06-21 18:28:49,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:49,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:49,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:49,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:28:49,404 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:49,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1875807829, now seen corresponding path program 5 times [2024-06-21 18:28:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:49,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240422005] [2024-06-21 18:28:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:50,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240422005] [2024-06-21 18:28:50,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240422005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:50,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:50,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:50,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856286187] [2024-06-21 18:28:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:50,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:50,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:50,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:50,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:50,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:50,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:51,229 INFO L124 PetriNetUnfolderBase]: 292/518 cut-off events. [2024-06-21 18:28:51,229 INFO L125 PetriNetUnfolderBase]: For 7871/7871 co-relation queries the response was YES. [2024-06-21 18:28:51,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 518 events. 292/518 cut-off events. For 7871/7871 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1924 event pairs, 55 based on Foata normal form. 1/518 useless extension candidates. Maximal degree in co-relation 2664. Up to 450 conditions per place. [2024-06-21 18:28:51,233 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 57 selfloop transitions, 30 changer transitions 0/89 dead transitions. [2024-06-21 18:28:51,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 882 flow [2024-06-21 18:28:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-21 18:28:51,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:28:51,234 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 606 flow. Second operand 8 states and 100 transitions. [2024-06-21 18:28:51,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 882 flow [2024-06-21 18:28:51,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 835 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:51,242 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 658 flow [2024-06-21 18:28:51,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-06-21 18:28:51,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-21 18:28:51,243 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 658 flow [2024-06-21 18:28:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:51,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:51,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:51,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:28:51,244 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:51,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1857148061, now seen corresponding path program 4 times [2024-06-21 18:28:51,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:51,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869289325] [2024-06-21 18:28:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:52,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869289325] [2024-06-21 18:28:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869289325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:52,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799193803] [2024-06-21 18:28:52,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:52,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:52,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:52,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:52,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:52,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:28:52,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 658 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:52,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:52,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:28:52,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:53,089 INFO L124 PetriNetUnfolderBase]: 274/499 cut-off events. [2024-06-21 18:28:53,089 INFO L125 PetriNetUnfolderBase]: For 8326/8326 co-relation queries the response was YES. [2024-06-21 18:28:53,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 499 events. 274/499 cut-off events. For 8326/8326 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1892 event pairs, 55 based on Foata normal form. 1/499 useless extension candidates. Maximal degree in co-relation 2588. Up to 425 conditions per place. [2024-06-21 18:28:53,094 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-21 18:28:53,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 877 flow [2024-06-21 18:28:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-21 18:28:53,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-21 18:28:53,095 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 658 flow. Second operand 8 states and 103 transitions. [2024-06-21 18:28:53,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 877 flow [2024-06-21 18:28:53,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 806 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 18:28:53,105 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 692 flow [2024-06-21 18:28:53,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-21 18:28:53,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 18:28:53,105 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 692 flow [2024-06-21 18:28:53,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:53,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:53,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:53,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:28:53,106 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:53,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash 834149927, now seen corresponding path program 6 times [2024-06-21 18:28:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:53,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116143118] [2024-06-21 18:28:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:53,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:54,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:54,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116143118] [2024-06-21 18:28:54,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116143118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:54,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:54,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389496677] [2024-06-21 18:28:54,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:54,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:54,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 692 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:54,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:54,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:54,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:54,885 INFO L124 PetriNetUnfolderBase]: 288/512 cut-off events. [2024-06-21 18:28:54,886 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2024-06-21 18:28:54,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 512 events. 288/512 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1905 event pairs, 55 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 2706. Up to 445 conditions per place. [2024-06-21 18:28:54,889 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 31 changer transitions 0/93 dead transitions. [2024-06-21 18:28:54,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 900 flow [2024-06-21 18:28:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 18:28:54,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-21 18:28:54,891 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 692 flow. Second operand 8 states and 97 transitions. [2024-06-21 18:28:54,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 900 flow [2024-06-21 18:28:54,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 870 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:54,902 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 729 flow [2024-06-21 18:28:54,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=729, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2024-06-21 18:28:54,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-21 18:28:54,903 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 729 flow [2024-06-21 18:28:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:54,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:54,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:54,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:28:54,904 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:54,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash -25780858, now seen corresponding path program 1 times [2024-06-21 18:28:54,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:54,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345566286] [2024-06-21 18:28:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:54,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:56,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:56,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345566286] [2024-06-21 18:28:56,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345566286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:56,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:56,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:56,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117693700] [2024-06-21 18:28:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:56,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:56,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:56,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:56,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:56,425 INFO L124 PetriNetUnfolderBase]: 300/533 cut-off events. [2024-06-21 18:28:56,425 INFO L125 PetriNetUnfolderBase]: For 10287/10287 co-relation queries the response was YES. [2024-06-21 18:28:56,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 533 events. 300/533 cut-off events. For 10287/10287 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2023 event pairs, 60 based on Foata normal form. 1/533 useless extension candidates. Maximal degree in co-relation 2887. Up to 478 conditions per place. [2024-06-21 18:28:56,430 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 25 changer transitions 0/100 dead transitions. [2024-06-21 18:28:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 1035 flow [2024-06-21 18:28:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:28:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:28:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 18:28:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 18:28:56,431 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 729 flow. Second operand 9 states and 103 transitions. [2024-06-21 18:28:56,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 1035 flow [2024-06-21 18:28:56,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 981 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:56,443 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 784 flow [2024-06-21 18:28:56,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=784, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2024-06-21 18:28:56,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-21 18:28:56,444 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 784 flow [2024-06-21 18:28:56,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:56,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:56,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:56,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:28:56,445 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:56,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -148962163, now seen corresponding path program 1 times [2024-06-21 18:28:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741557445] [2024-06-21 18:28:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:57,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:57,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741557445] [2024-06-21 18:28:57,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741557445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:57,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:57,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:57,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119606601] [2024-06-21 18:28:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:57,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:57,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:57,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:57,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 784 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:57,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:57,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:57,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:57,920 INFO L124 PetriNetUnfolderBase]: 324/572 cut-off events. [2024-06-21 18:28:57,920 INFO L125 PetriNetUnfolderBase]: For 12426/12426 co-relation queries the response was YES. [2024-06-21 18:28:57,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 572 events. 324/572 cut-off events. For 12426/12426 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2199 event pairs, 66 based on Foata normal form. 3/574 useless extension candidates. Maximal degree in co-relation 3171. Up to 460 conditions per place. [2024-06-21 18:28:57,924 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-21 18:28:57,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 1108 flow [2024-06-21 18:28:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:28:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:28:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 18:28:57,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 18:28:57,926 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 784 flow. Second operand 9 states and 110 transitions. [2024-06-21 18:28:57,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 1108 flow [2024-06-21 18:28:57,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 1068 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:57,939 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 837 flow [2024-06-21 18:28:57,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-06-21 18:28:57,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-21 18:28:57,940 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 837 flow [2024-06-21 18:28:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:57,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:57,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:57,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:28:57,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:57,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash -148962380, now seen corresponding path program 2 times [2024-06-21 18:28:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818416234] [2024-06-21 18:28:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818416234] [2024-06-21 18:28:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818416234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:59,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188075640] [2024-06-21 18:28:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:59,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:28:59,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 837 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:59,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:59,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:28:59,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:59,402 INFO L124 PetriNetUnfolderBase]: 327/577 cut-off events. [2024-06-21 18:28:59,403 INFO L125 PetriNetUnfolderBase]: For 13087/13087 co-relation queries the response was YES. [2024-06-21 18:28:59,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 577 events. 327/577 cut-off events. For 13087/13087 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2233 event pairs, 65 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 3331. Up to 521 conditions per place. [2024-06-21 18:28:59,407 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-21 18:28:59,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 105 transitions, 1131 flow [2024-06-21 18:28:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:28:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:28:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 18:28:59,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 18:28:59,408 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 837 flow. Second operand 9 states and 103 transitions. [2024-06-21 18:28:59,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 105 transitions, 1131 flow [2024-06-21 18:28:59,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 105 transitions, 1093 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:59,421 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 870 flow [2024-06-21 18:28:59,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=870, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-21 18:28:59,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-21 18:28:59,421 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 870 flow [2024-06-21 18:28:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:59,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:59,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:28:59,422 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:28:59,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1246931487, now seen corresponding path program 2 times [2024-06-21 18:28:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:59,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91057291] [2024-06-21 18:28:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:00,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91057291] [2024-06-21 18:29:00,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91057291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:00,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:00,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132323685] [2024-06-21 18:29:00,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:00,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:00,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 870 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:00,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:00,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:00,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:00,929 INFO L124 PetriNetUnfolderBase]: 351/616 cut-off events. [2024-06-21 18:29:00,929 INFO L125 PetriNetUnfolderBase]: For 15616/15616 co-relation queries the response was YES. [2024-06-21 18:29:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 616 events. 351/616 cut-off events. For 15616/15616 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2430 event pairs, 68 based on Foata normal form. 3/618 useless extension candidates. Maximal degree in co-relation 3616. Up to 485 conditions per place. [2024-06-21 18:29:00,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 30 changer transitions 0/116 dead transitions. [2024-06-21 18:29:00,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 116 transitions, 1275 flow [2024-06-21 18:29:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 18:29:00,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:29:00,936 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 870 flow. Second operand 9 states and 111 transitions. [2024-06-21 18:29:00,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 116 transitions, 1275 flow [2024-06-21 18:29:00,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 116 transitions, 1232 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:00,952 INFO L231 Difference]: Finished difference. Result has 117 places, 99 transitions, 921 flow [2024-06-21 18:29:00,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=921, PETRI_PLACES=117, PETRI_TRANSITIONS=99} [2024-06-21 18:29:00,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-21 18:29:00,952 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 921 flow [2024-06-21 18:29:00,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:00,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:00,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:29:00,953 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:00,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1246923830, now seen corresponding path program 3 times [2024-06-21 18:29:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:00,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112990680] [2024-06-21 18:29:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112990680] [2024-06-21 18:29:02,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112990680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:02,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:02,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073000574] [2024-06-21 18:29:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:02,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:02,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 99 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:02,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:02,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:02,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:02,441 INFO L124 PetriNetUnfolderBase]: 354/621 cut-off events. [2024-06-21 18:29:02,441 INFO L125 PetriNetUnfolderBase]: For 16314/16314 co-relation queries the response was YES. [2024-06-21 18:29:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 621 events. 354/621 cut-off events. For 16314/16314 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2455 event pairs, 70 based on Foata normal form. 1/621 useless extension candidates. Maximal degree in co-relation 3732. Up to 564 conditions per place. [2024-06-21 18:29:02,445 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 82 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-21 18:29:02,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 1227 flow [2024-06-21 18:29:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 18:29:02,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 18:29:02,447 INFO L175 Difference]: Start difference. First operand has 117 places, 99 transitions, 921 flow. Second operand 9 states and 103 transitions. [2024-06-21 18:29:02,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 1227 flow [2024-06-21 18:29:02,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 1184 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:02,462 INFO L231 Difference]: Finished difference. Result has 121 places, 101 transitions, 953 flow [2024-06-21 18:29:02,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=953, PETRI_PLACES=121, PETRI_TRANSITIONS=101} [2024-06-21 18:29:02,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-21 18:29:02,463 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 101 transitions, 953 flow [2024-06-21 18:29:02,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:02,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:02,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:02,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 18:29:02,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:02,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1246924047, now seen corresponding path program 3 times [2024-06-21 18:29:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441082683] [2024-06-21 18:29:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441082683] [2024-06-21 18:29:03,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441082683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:03,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:03,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401911709] [2024-06-21 18:29:03,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:03,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:03,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:03,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:03,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 101 transitions, 953 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:03,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:03,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:03,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:03,905 INFO L124 PetriNetUnfolderBase]: 348/612 cut-off events. [2024-06-21 18:29:03,906 INFO L125 PetriNetUnfolderBase]: For 17297/17297 co-relation queries the response was YES. [2024-06-21 18:29:03,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 612 events. 348/612 cut-off events. For 17297/17297 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2421 event pairs, 66 based on Foata normal form. 3/614 useless extension candidates. Maximal degree in co-relation 3642. Up to 486 conditions per place. [2024-06-21 18:29:03,909 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 29 changer transitions 0/119 dead transitions. [2024-06-21 18:29:03,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 119 transitions, 1298 flow [2024-06-21 18:29:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-21 18:29:03,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-21 18:29:03,911 INFO L175 Difference]: Start difference. First operand has 121 places, 101 transitions, 953 flow. Second operand 8 states and 107 transitions. [2024-06-21 18:29:03,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 119 transitions, 1298 flow [2024-06-21 18:29:03,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 1249 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:03,928 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 967 flow [2024-06-21 18:29:03,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=967, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2024-06-21 18:29:03,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-21 18:29:03,929 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 967 flow [2024-06-21 18:29:03,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:03,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:03,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 18:29:03,930 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:03,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash -619605644, now seen corresponding path program 1 times [2024-06-21 18:29:03,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:03,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680469187] [2024-06-21 18:29:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:05,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:05,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680469187] [2024-06-21 18:29:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680469187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:05,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:05,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:05,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330586627] [2024-06-21 18:29:05,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:05,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:05,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:05,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:05,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 967 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:05,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:05,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:05,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:05,594 INFO L124 PetriNetUnfolderBase]: 354/622 cut-off events. [2024-06-21 18:29:05,594 INFO L125 PetriNetUnfolderBase]: For 18257/18257 co-relation queries the response was YES. [2024-06-21 18:29:05,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 622 events. 354/622 cut-off events. For 18257/18257 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2463 event pairs, 60 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3760. Up to 591 conditions per place. [2024-06-21 18:29:05,598 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-21 18:29:05,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 112 transitions, 1227 flow [2024-06-21 18:29:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 18:29:05,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 18:29:05,599 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 967 flow. Second operand 9 states and 97 transitions. [2024-06-21 18:29:05,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 112 transitions, 1227 flow [2024-06-21 18:29:05,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 112 transitions, 1162 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:05,618 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 959 flow [2024-06-21 18:29:05,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=959, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2024-06-21 18:29:05,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-21 18:29:05,619 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 959 flow [2024-06-21 18:29:05,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:05,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:05,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:05,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 18:29:05,619 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:05,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:05,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1402692195, now seen corresponding path program 4 times [2024-06-21 18:29:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573878818] [2024-06-21 18:29:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:06,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573878818] [2024-06-21 18:29:06,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573878818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:06,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:06,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:06,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366729301] [2024-06-21 18:29:06,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:06,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:06,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:06,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:06,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:06,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 959 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:06,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:06,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:06,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:07,033 INFO L124 PetriNetUnfolderBase]: 363/637 cut-off events. [2024-06-21 18:29:07,034 INFO L125 PetriNetUnfolderBase]: For 19743/19743 co-relation queries the response was YES. [2024-06-21 18:29:07,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 637 events. 363/637 cut-off events. For 19743/19743 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2550 event pairs, 65 based on Foata normal form. 3/639 useless extension candidates. Maximal degree in co-relation 3847. Up to 598 conditions per place. [2024-06-21 18:29:07,037 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 15 changer transitions 0/116 dead transitions. [2024-06-21 18:29:07,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 116 transitions, 1234 flow [2024-06-21 18:29:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 18:29:07,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-21 18:29:07,039 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 959 flow. Second operand 8 states and 93 transitions. [2024-06-21 18:29:07,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 116 transitions, 1234 flow [2024-06-21 18:29:07,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 116 transitions, 1190 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:07,065 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 971 flow [2024-06-21 18:29:07,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2024-06-21 18:29:07,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-21 18:29:07,067 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 971 flow [2024-06-21 18:29:07,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:07,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:07,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 18:29:07,068 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:07,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1411888965, now seen corresponding path program 5 times [2024-06-21 18:29:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:07,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517293881] [2024-06-21 18:29:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:08,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:08,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517293881] [2024-06-21 18:29:08,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517293881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:08,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:08,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:08,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231140938] [2024-06-21 18:29:08,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:08,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:08,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:08,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 971 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:08,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:08,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:08,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:09,027 INFO L124 PetriNetUnfolderBase]: 372/652 cut-off events. [2024-06-21 18:29:09,028 INFO L125 PetriNetUnfolderBase]: For 21463/21463 co-relation queries the response was YES. [2024-06-21 18:29:09,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 652 events. 372/652 cut-off events. For 21463/21463 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2633 event pairs, 64 based on Foata normal form. 3/654 useless extension candidates. Maximal degree in co-relation 3954. Up to 571 conditions per place. [2024-06-21 18:29:09,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 22 changer transitions 0/123 dead transitions. [2024-06-21 18:29:09,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 1343 flow [2024-06-21 18:29:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 18:29:09,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-21 18:29:09,035 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 971 flow. Second operand 9 states and 106 transitions. [2024-06-21 18:29:09,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 1343 flow [2024-06-21 18:29:09,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 123 transitions, 1296 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:09,056 INFO L231 Difference]: Finished difference. Result has 128 places, 107 transitions, 1000 flow [2024-06-21 18:29:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1000, PETRI_PLACES=128, PETRI_TRANSITIONS=107} [2024-06-21 18:29:09,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-21 18:29:09,057 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 107 transitions, 1000 flow [2024-06-21 18:29:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:09,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:09,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 18:29:09,057 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:09,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1411896405, now seen corresponding path program 6 times [2024-06-21 18:29:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682181276] [2024-06-21 18:29:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:09,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:10,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682181276] [2024-06-21 18:29:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682181276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:10,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051398528] [2024-06-21 18:29:10,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:10,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:10,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:10,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 107 transitions, 1000 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:10,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:10,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:10,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:10,961 INFO L124 PetriNetUnfolderBase]: 366/643 cut-off events. [2024-06-21 18:29:10,962 INFO L125 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2024-06-21 18:29:10,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 643 events. 366/643 cut-off events. For 21480/21480 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2595 event pairs, 62 based on Foata normal form. 3/645 useless extension candidates. Maximal degree in co-relation 3857. Up to 567 conditions per place. [2024-06-21 18:29:10,967 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-06-21 18:29:10,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 120 transitions, 1271 flow [2024-06-21 18:29:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 18:29:10,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 18:29:10,968 INFO L175 Difference]: Start difference. First operand has 128 places, 107 transitions, 1000 flow. Second operand 9 states and 104 transitions. [2024-06-21 18:29:10,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 120 transitions, 1271 flow [2024-06-21 18:29:11,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1203 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:11,018 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 985 flow [2024-06-21 18:29:11,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=985, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2024-06-21 18:29:11,028 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-21 18:29:11,028 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 985 flow [2024-06-21 18:29:11,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:11,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:11,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 18:29:11,029 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:11,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1411896622, now seen corresponding path program 4 times [2024-06-21 18:29:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495782698] [2024-06-21 18:29:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495782698] [2024-06-21 18:29:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495782698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:12,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:12,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654209726] [2024-06-21 18:29:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:12,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:12,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:12,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:12,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:12,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 985 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:12,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:12,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:12,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:12,883 INFO L124 PetriNetUnfolderBase]: 364/640 cut-off events. [2024-06-21 18:29:12,883 INFO L125 PetriNetUnfolderBase]: For 21146/21146 co-relation queries the response was YES. [2024-06-21 18:29:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 640 events. 364/640 cut-off events. For 21146/21146 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2581 event pairs, 66 based on Foata normal form. 1/640 useless extension candidates. Maximal degree in co-relation 3828. Up to 617 conditions per place. [2024-06-21 18:29:12,908 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2024-06-21 18:29:12,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 114 transitions, 1225 flow [2024-06-21 18:29:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 18:29:12,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-21 18:29:12,910 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 985 flow. Second operand 8 states and 89 transitions. [2024-06-21 18:29:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 114 transitions, 1225 flow [2024-06-21 18:29:12,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 114 transitions, 1146 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 18:29:12,963 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 939 flow [2024-06-21 18:29:12,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-06-21 18:29:12,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-21 18:29:12,964 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 939 flow [2024-06-21 18:29:12,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:12,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:12,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 18:29:12,965 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:12,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash 215192504, now seen corresponding path program 5 times [2024-06-21 18:29:12,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:12,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674401473] [2024-06-21 18:29:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:14,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674401473] [2024-06-21 18:29:14,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674401473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:14,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:14,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:14,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655284251] [2024-06-21 18:29:14,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:14,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:14,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 939 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:14,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:14,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:14,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:14,711 INFO L124 PetriNetUnfolderBase]: 371/652 cut-off events. [2024-06-21 18:29:14,711 INFO L125 PetriNetUnfolderBase]: For 22343/22343 co-relation queries the response was YES. [2024-06-21 18:29:14,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 652 events. 371/652 cut-off events. For 22343/22343 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2650 event pairs, 58 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 3861. Up to 540 conditions per place. [2024-06-21 18:29:14,716 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 48 changer transitions 0/130 dead transitions. [2024-06-21 18:29:14,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 130 transitions, 1359 flow [2024-06-21 18:29:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 18:29:14,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 18:29:14,726 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 939 flow. Second operand 9 states and 112 transitions. [2024-06-21 18:29:14,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 130 transitions, 1359 flow [2024-06-21 18:29:14,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 1332 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:14,753 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 1105 flow [2024-06-21 18:29:14,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1105, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-21 18:29:14,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-21 18:29:14,754 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 1105 flow [2024-06-21 18:29:14,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:14,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:14,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 18:29:14,754 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:14,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash 617964166, now seen corresponding path program 6 times [2024-06-21 18:29:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:14,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248437971] [2024-06-21 18:29:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248437971] [2024-06-21 18:29:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248437971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:16,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634823218] [2024-06-21 18:29:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:16,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:16,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:16,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 1105 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:16,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:16,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:16,480 INFO L124 PetriNetUnfolderBase]: 383/672 cut-off events. [2024-06-21 18:29:16,480 INFO L125 PetriNetUnfolderBase]: For 24652/24652 co-relation queries the response was YES. [2024-06-21 18:29:16,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4271 conditions, 672 events. 383/672 cut-off events. For 24652/24652 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2773 event pairs, 59 based on Foata normal form. 1/672 useless extension candidates. Maximal degree in co-relation 4208. Up to 553 conditions per place. [2024-06-21 18:29:16,484 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 46 changer transitions 0/136 dead transitions. [2024-06-21 18:29:16,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 136 transitions, 1614 flow [2024-06-21 18:29:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 18:29:16,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 18:29:16,486 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 1105 flow. Second operand 9 states and 114 transitions. [2024-06-21 18:29:16,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 136 transitions, 1614 flow [2024-06-21 18:29:16,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 136 transitions, 1531 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:16,516 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1194 flow [2024-06-21 18:29:16,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1194, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-21 18:29:16,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-21 18:29:16,516 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1194 flow [2024-06-21 18:29:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:16,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:16,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:16,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 18:29:16,517 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:16,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 636593926, now seen corresponding path program 7 times [2024-06-21 18:29:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11150917] [2024-06-21 18:29:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:17,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11150917] [2024-06-21 18:29:17,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11150917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:17,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:17,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:17,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904684606] [2024-06-21 18:29:17,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:17,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:17,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:17,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:17,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:17,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1194 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:17,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:17,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:17,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:18,356 INFO L124 PetriNetUnfolderBase]: 381/669 cut-off events. [2024-06-21 18:29:18,357 INFO L125 PetriNetUnfolderBase]: For 25366/25366 co-relation queries the response was YES. [2024-06-21 18:29:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 669 events. 381/669 cut-off events. For 25366/25366 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2745 event pairs, 59 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 4213. Up to 551 conditions per place. [2024-06-21 18:29:18,361 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 47 changer transitions 0/134 dead transitions. [2024-06-21 18:29:18,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 1562 flow [2024-06-21 18:29:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 18:29:18,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:29:18,363 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1194 flow. Second operand 9 states and 111 transitions. [2024-06-21 18:29:18,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 1562 flow [2024-06-21 18:29:18,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 134 transitions, 1480 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:18,402 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 1211 flow [2024-06-21 18:29:18,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=144, PETRI_TRANSITIONS=120} [2024-06-21 18:29:18,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-21 18:29:18,403 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 1211 flow [2024-06-21 18:29:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:18,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:18,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:18,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 18:29:18,403 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:18,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash 635988713, now seen corresponding path program 7 times [2024-06-21 18:29:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:18,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664296289] [2024-06-21 18:29:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:19,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664296289] [2024-06-21 18:29:19,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664296289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:19,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:19,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:19,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812106145] [2024-06-21 18:29:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:19,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:19,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:19,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:19,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 120 transitions, 1211 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:19,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:19,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:19,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:20,247 INFO L124 PetriNetUnfolderBase]: 384/674 cut-off events. [2024-06-21 18:29:20,248 INFO L125 PetriNetUnfolderBase]: For 26862/26862 co-relation queries the response was YES. [2024-06-21 18:29:20,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 674 events. 384/674 cut-off events. For 26862/26862 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2772 event pairs, 60 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 4273. Up to 562 conditions per place. [2024-06-21 18:29:20,253 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 42 changer transitions 0/144 dead transitions. [2024-06-21 18:29:20,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 1655 flow [2024-06-21 18:29:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 18:29:20,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:29:20,254 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 1211 flow. Second operand 9 states and 111 transitions. [2024-06-21 18:29:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 1655 flow [2024-06-21 18:29:20,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 1569 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:20,287 INFO L231 Difference]: Finished difference. Result has 148 places, 130 transitions, 1311 flow [2024-06-21 18:29:20,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2024-06-21 18:29:20,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-21 18:29:20,288 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 1311 flow [2024-06-21 18:29:20,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:20,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:20,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:20,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 18:29:20,289 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:20,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1979494794, now seen corresponding path program 8 times [2024-06-21 18:29:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548070264] [2024-06-21 18:29:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548070264] [2024-06-21 18:29:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548070264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659030470] [2024-06-21 18:29:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:21,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:21,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 1311 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:21,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:21,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:21,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:22,451 INFO L124 PetriNetUnfolderBase]: 387/679 cut-off events. [2024-06-21 18:29:22,451 INFO L125 PetriNetUnfolderBase]: For 28525/28525 co-relation queries the response was YES. [2024-06-21 18:29:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 679 events. 387/679 cut-off events. For 28525/28525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2802 event pairs, 65 based on Foata normal form. 1/679 useless extension candidates. Maximal degree in co-relation 4452. Up to 560 conditions per place. [2024-06-21 18:29:22,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 47 changer transitions 0/147 dead transitions. [2024-06-21 18:29:22,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 147 transitions, 1744 flow [2024-06-21 18:29:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 18:29:22,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 18:29:22,457 INFO L175 Difference]: Start difference. First operand has 148 places, 130 transitions, 1311 flow. Second operand 9 states and 113 transitions. [2024-06-21 18:29:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 147 transitions, 1744 flow [2024-06-21 18:29:22,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1688 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:22,495 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1387 flow [2024-06-21 18:29:22,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1387, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2024-06-21 18:29:22,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-21 18:29:22,496 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1387 flow [2024-06-21 18:29:22,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:22,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:22,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 18:29:22,497 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:22,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1984862754, now seen corresponding path program 9 times [2024-06-21 18:29:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83227380] [2024-06-21 18:29:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83227380] [2024-06-21 18:29:24,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83227380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:24,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391640000] [2024-06-21 18:29:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:24,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:24,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:24,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 1387 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:24,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:24,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:24,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:24,559 INFO L124 PetriNetUnfolderBase]: 390/684 cut-off events. [2024-06-21 18:29:24,560 INFO L125 PetriNetUnfolderBase]: For 30117/30117 co-relation queries the response was YES. [2024-06-21 18:29:24,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 684 events. 390/684 cut-off events. For 30117/30117 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2828 event pairs, 63 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 4543. Up to 564 conditions per place. [2024-06-21 18:29:24,564 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 48 changer transitions 0/148 dead transitions. [2024-06-21 18:29:24,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 148 transitions, 1813 flow [2024-06-21 18:29:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 18:29:24,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 18:29:24,565 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1387 flow. Second operand 9 states and 113 transitions. [2024-06-21 18:29:24,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 148 transitions, 1813 flow [2024-06-21 18:29:24,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1696 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 18:29:24,607 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1397 flow [2024-06-21 18:29:24,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1397, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-21 18:29:24,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 18:29:24,608 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1397 flow [2024-06-21 18:29:24,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:24,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:24,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:24,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 18:29:24,608 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:24,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1979500591, now seen corresponding path program 8 times [2024-06-21 18:29:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001777158] [2024-06-21 18:29:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001777158] [2024-06-21 18:29:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001777158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:26,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:26,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100490264] [2024-06-21 18:29:26,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:26,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:26,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:26,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:26,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1397 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:26,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:26,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:26,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:26,754 INFO L124 PetriNetUnfolderBase]: 393/689 cut-off events. [2024-06-21 18:29:26,754 INFO L125 PetriNetUnfolderBase]: For 31701/31701 co-relation queries the response was YES. [2024-06-21 18:29:26,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 689 events. 393/689 cut-off events. For 31701/31701 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2861 event pairs, 62 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 4549. Up to 576 conditions per place. [2024-06-21 18:29:26,758 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 110 selfloop transitions, 39 changer transitions 0/151 dead transitions. [2024-06-21 18:29:26,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 151 transitions, 1826 flow [2024-06-21 18:29:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 18:29:26,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 18:29:26,760 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1397 flow. Second operand 9 states and 113 transitions. [2024-06-21 18:29:26,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 151 transitions, 1826 flow [2024-06-21 18:29:26,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 151 transitions, 1735 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:26,802 INFO L231 Difference]: Finished difference. Result has 155 places, 138 transitions, 1410 flow [2024-06-21 18:29:26,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1410, PETRI_PLACES=155, PETRI_TRANSITIONS=138} [2024-06-21 18:29:26,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-21 18:29:26,803 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 1410 flow [2024-06-21 18:29:26,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:26,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:26,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:26,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 18:29:26,803 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:26,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1737013866, now seen corresponding path program 2 times [2024-06-21 18:29:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272416552] [2024-06-21 18:29:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272416552] [2024-06-21 18:29:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272416552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:28,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407822358] [2024-06-21 18:29:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:28,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:28,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:29:28,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 138 transitions, 1410 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:28,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:28,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:29:28,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:28,740 INFO L124 PetriNetUnfolderBase]: 369/662 cut-off events. [2024-06-21 18:29:28,741 INFO L125 PetriNetUnfolderBase]: For 32594/32595 co-relation queries the response was YES. [2024-06-21 18:29:28,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 662 events. 369/662 cut-off events. For 32594/32595 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2810 event pairs, 52 based on Foata normal form. 3/661 useless extension candidates. Maximal degree in co-relation 4323. Up to 515 conditions per place. [2024-06-21 18:29:28,745 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 32 changer transitions 0/157 dead transitions. [2024-06-21 18:29:28,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 157 transitions, 1740 flow [2024-06-21 18:29:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 18:29:28,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:29:28,747 INFO L175 Difference]: Start difference. First operand has 155 places, 138 transitions, 1410 flow. Second operand 9 states and 117 transitions. [2024-06-21 18:29:28,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 157 transitions, 1740 flow [2024-06-21 18:29:28,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 1684 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:28,802 INFO L231 Difference]: Finished difference. Result has 161 places, 144 transitions, 1503 flow [2024-06-21 18:29:28,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1503, PETRI_PLACES=161, PETRI_TRANSITIONS=144} [2024-06-21 18:29:28,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-21 18:29:28,802 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 144 transitions, 1503 flow [2024-06-21 18:29:28,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:28,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:28,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:28,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 18:29:28,803 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:28,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:28,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1755782475, now seen corresponding path program 9 times [2024-06-21 18:29:28,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:28,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874533820] [2024-06-21 18:29:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:28,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874533820] [2024-06-21 18:29:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874533820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:30,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:30,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:30,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588378515] [2024-06-21 18:29:30,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:30,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:30,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:30,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 144 transitions, 1503 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:30,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:30,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:30,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:30,907 INFO L124 PetriNetUnfolderBase]: 395/693 cut-off events. [2024-06-21 18:29:30,907 INFO L125 PetriNetUnfolderBase]: For 33396/33396 co-relation queries the response was YES. [2024-06-21 18:29:30,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 693 events. 395/693 cut-off events. For 33396/33396 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2870 event pairs, 54 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 4677. Up to 579 conditions per place. [2024-06-21 18:29:30,912 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 44 changer transitions 0/158 dead transitions. [2024-06-21 18:29:30,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 1941 flow [2024-06-21 18:29:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 18:29:30,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 18:29:30,914 INFO L175 Difference]: Start difference. First operand has 161 places, 144 transitions, 1503 flow. Second operand 9 states and 110 transitions. [2024-06-21 18:29:30,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 1941 flow [2024-06-21 18:29:30,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 1888 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:30,973 INFO L231 Difference]: Finished difference. Result has 165 places, 146 transitions, 1559 flow [2024-06-21 18:29:30,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1559, PETRI_PLACES=165, PETRI_TRANSITIONS=146} [2024-06-21 18:29:30,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-21 18:29:30,974 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 146 transitions, 1559 flow [2024-06-21 18:29:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:30,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:30,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:30,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 18:29:30,975 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:30,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1755790132, now seen corresponding path program 10 times [2024-06-21 18:29:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529527953] [2024-06-21 18:29:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529527953] [2024-06-21 18:29:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529527953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:32,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054222748] [2024-06-21 18:29:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:32,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:32,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:32,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:32,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 146 transitions, 1559 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:32,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:32,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:32,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:33,090 INFO L124 PetriNetUnfolderBase]: 393/690 cut-off events. [2024-06-21 18:29:33,090 INFO L125 PetriNetUnfolderBase]: For 34316/34316 co-relation queries the response was YES. [2024-06-21 18:29:33,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 690 events. 393/690 cut-off events. For 34316/34316 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2847 event pairs, 56 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 4677. Up to 571 conditions per place. [2024-06-21 18:29:33,095 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 51 changer transitions 0/157 dead transitions. [2024-06-21 18:29:33,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 157 transitions, 1897 flow [2024-06-21 18:29:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 18:29:33,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-21 18:29:33,096 INFO L175 Difference]: Start difference. First operand has 165 places, 146 transitions, 1559 flow. Second operand 9 states and 109 transitions. [2024-06-21 18:29:33,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 157 transitions, 1897 flow [2024-06-21 18:29:33,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 157 transitions, 1814 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:33,153 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1583 flow [2024-06-21 18:29:33,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1583, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-21 18:29:33,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-21 18:29:33,154 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1583 flow [2024-06-21 18:29:33,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:33,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:33,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 18:29:33,157 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:33,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1985064781, now seen corresponding path program 10 times [2024-06-21 18:29:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:33,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409293792] [2024-06-21 18:29:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409293792] [2024-06-21 18:29:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409293792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:34,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216954107] [2024-06-21 18:29:34,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:34,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:34,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:34,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:34,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1583 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:34,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:34,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:35,324 INFO L124 PetriNetUnfolderBase]: 391/687 cut-off events. [2024-06-21 18:29:35,324 INFO L125 PetriNetUnfolderBase]: For 35010/35010 co-relation queries the response was YES. [2024-06-21 18:29:35,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 687 events. 391/687 cut-off events. For 35010/35010 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2838 event pairs, 54 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 4663. Up to 574 conditions per place. [2024-06-21 18:29:35,328 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 42 changer transitions 0/157 dead transitions. [2024-06-21 18:29:35,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 157 transitions, 1921 flow [2024-06-21 18:29:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 18:29:35,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 18:29:35,330 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1583 flow. Second operand 9 states and 110 transitions. [2024-06-21 18:29:35,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 157 transitions, 1921 flow [2024-06-21 18:29:35,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 157 transitions, 1817 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:35,385 INFO L231 Difference]: Finished difference. Result has 170 places, 146 transitions, 1568 flow [2024-06-21 18:29:35,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1568, PETRI_PLACES=170, PETRI_TRANSITIONS=146} [2024-06-21 18:29:35,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 18:29:35,386 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 1568 flow [2024-06-21 18:29:35,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:35,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:35,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 18:29:35,387 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:35,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash -619593740, now seen corresponding path program 1 times [2024-06-21 18:29:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415057845] [2024-06-21 18:29:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:37,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:37,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415057845] [2024-06-21 18:29:37,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415057845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:37,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:37,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:37,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888860582] [2024-06-21 18:29:37,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:37,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:37,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:37,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:29:37,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 146 transitions, 1568 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:37,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:37,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:29:37,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:37,954 INFO L124 PetriNetUnfolderBase]: 364/654 cut-off events. [2024-06-21 18:29:37,954 INFO L125 PetriNetUnfolderBase]: For 35776/35777 co-relation queries the response was YES. [2024-06-21 18:29:37,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 654 events. 364/654 cut-off events. For 35776/35777 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2744 event pairs, 64 based on Foata normal form. 3/651 useless extension candidates. Maximal degree in co-relation 4385. Up to 561 conditions per place. [2024-06-21 18:29:37,959 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 111 selfloop transitions, 14 changer transitions 0/154 dead transitions. [2024-06-21 18:29:37,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 154 transitions, 1836 flow [2024-06-21 18:29:37,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 18:29:37,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 18:29:37,960 INFO L175 Difference]: Start difference. First operand has 170 places, 146 transitions, 1568 flow. Second operand 9 states and 103 transitions. [2024-06-21 18:29:37,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 154 transitions, 1836 flow [2024-06-21 18:29:38,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 154 transitions, 1733 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:29:38,012 INFO L231 Difference]: Finished difference. Result has 170 places, 146 transitions, 1497 flow [2024-06-21 18:29:38,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1497, PETRI_PLACES=170, PETRI_TRANSITIONS=146} [2024-06-21 18:29:38,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 18:29:38,013 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 1497 flow [2024-06-21 18:29:38,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:38,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:38,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 18:29:38,014 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:38,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash -327627124, now seen corresponding path program 1 times [2024-06-21 18:29:38,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:38,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022668305] [2024-06-21 18:29:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:39,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:39,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022668305] [2024-06-21 18:29:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022668305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:39,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:39,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125796293] [2024-06-21 18:29:39,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:39,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:39,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:39,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:39,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 146 transitions, 1497 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:39,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:39,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:39,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:39,720 INFO L124 PetriNetUnfolderBase]: 395/695 cut-off events. [2024-06-21 18:29:39,720 INFO L125 PetriNetUnfolderBase]: For 36151/36151 co-relation queries the response was YES. [2024-06-21 18:29:39,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 695 events. 395/695 cut-off events. For 36151/36151 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2900 event pairs, 73 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 4580. Up to 660 conditions per place. [2024-06-21 18:29:39,725 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2024-06-21 18:29:39,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1877 flow [2024-06-21 18:29:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 18:29:39,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 18:29:39,726 INFO L175 Difference]: Start difference. First operand has 170 places, 146 transitions, 1497 flow. Second operand 9 states and 102 transitions. [2024-06-21 18:29:39,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1877 flow [2024-06-21 18:29:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 1845 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:39,783 INFO L231 Difference]: Finished difference. Result has 173 places, 150 transitions, 1539 flow [2024-06-21 18:29:39,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1539, PETRI_PLACES=173, PETRI_TRANSITIONS=150} [2024-06-21 18:29:39,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-21 18:29:39,784 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 150 transitions, 1539 flow [2024-06-21 18:29:39,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:39,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:39,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:39,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 18:29:39,784 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:39,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash -327507154, now seen corresponding path program 2 times [2024-06-21 18:29:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976657703] [2024-06-21 18:29:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:39,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976657703] [2024-06-21 18:29:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976657703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:41,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641410750] [2024-06-21 18:29:41,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:41,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:41,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:41,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:41,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:41,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:41,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 150 transitions, 1539 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:41,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:41,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:41,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:41,385 INFO L124 PetriNetUnfolderBase]: 403/708 cut-off events. [2024-06-21 18:29:41,386 INFO L125 PetriNetUnfolderBase]: For 38701/38701 co-relation queries the response was YES. [2024-06-21 18:29:41,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4846 conditions, 708 events. 403/708 cut-off events. For 38701/38701 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2962 event pairs, 72 based on Foata normal form. 1/708 useless extension candidates. Maximal degree in co-relation 4768. Up to 632 conditions per place. [2024-06-21 18:29:41,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 33 changer transitions 0/166 dead transitions. [2024-06-21 18:29:41,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 166 transitions, 2029 flow [2024-06-21 18:29:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 18:29:41,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 18:29:41,392 INFO L175 Difference]: Start difference. First operand has 173 places, 150 transitions, 1539 flow. Second operand 9 states and 108 transitions. [2024-06-21 18:29:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 166 transitions, 2029 flow [2024-06-21 18:29:41,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 166 transitions, 1943 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 18:29:41,459 INFO L231 Difference]: Finished difference. Result has 173 places, 154 transitions, 1568 flow [2024-06-21 18:29:41,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1568, PETRI_PLACES=173, PETRI_TRANSITIONS=154} [2024-06-21 18:29:41,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-21 18:29:41,460 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 154 transitions, 1568 flow [2024-06-21 18:29:41,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:41,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 18:29:41,461 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:41,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:41,461 INFO L85 PathProgramCache]: Analyzing trace with hash -177197308, now seen corresponding path program 1 times [2024-06-21 18:29:41,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:41,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318064047] [2024-06-21 18:29:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:42,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:42,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318064047] [2024-06-21 18:29:42,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318064047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:42,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188799150] [2024-06-21 18:29:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:42,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:42,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:42,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 154 transitions, 1568 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:42,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:42,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:42,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:43,114 INFO L124 PetriNetUnfolderBase]: 411/721 cut-off events. [2024-06-21 18:29:43,114 INFO L125 PetriNetUnfolderBase]: For 41556/41556 co-relation queries the response was YES. [2024-06-21 18:29:43,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4998 conditions, 721 events. 411/721 cut-off events. For 41556/41556 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3039 event pairs, 73 based on Foata normal form. 1/721 useless extension candidates. Maximal degree in co-relation 4919. Up to 611 conditions per place. [2024-06-21 18:29:43,119 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 37 changer transitions 0/170 dead transitions. [2024-06-21 18:29:43,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 170 transitions, 2044 flow [2024-06-21 18:29:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 18:29:43,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 18:29:43,121 INFO L175 Difference]: Start difference. First operand has 173 places, 154 transitions, 1568 flow. Second operand 9 states and 110 transitions. [2024-06-21 18:29:43,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 170 transitions, 2044 flow [2024-06-21 18:29:43,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1992 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:43,194 INFO L231 Difference]: Finished difference. Result has 177 places, 158 transitions, 1615 flow [2024-06-21 18:29:43,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=177, PETRI_TRANSITIONS=158} [2024-06-21 18:29:43,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-21 18:29:43,195 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 158 transitions, 1615 flow [2024-06-21 18:29:43,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:43,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:43,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:43,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 18:29:43,195 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:43,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash -172549168, now seen corresponding path program 2 times [2024-06-21 18:29:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:43,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631512542] [2024-06-21 18:29:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:43,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:44,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:44,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631512542] [2024-06-21 18:29:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631512542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:44,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:44,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:44,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835420421] [2024-06-21 18:29:44,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:44,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:44,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:44,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 158 transitions, 1615 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:44,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:44,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:44,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:44,924 INFO L124 PetriNetUnfolderBase]: 419/734 cut-off events. [2024-06-21 18:29:44,924 INFO L125 PetriNetUnfolderBase]: For 44388/44388 co-relation queries the response was YES. [2024-06-21 18:29:44,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5214 conditions, 734 events. 419/734 cut-off events. For 44388/44388 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3119 event pairs, 73 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 5133. Up to 621 conditions per place. [2024-06-21 18:29:44,929 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-21 18:29:44,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 175 transitions, 2211 flow [2024-06-21 18:29:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 18:29:44,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:29:44,931 INFO L175 Difference]: Start difference. First operand has 177 places, 158 transitions, 1615 flow. Second operand 9 states and 111 transitions. [2024-06-21 18:29:44,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 175 transitions, 2211 flow [2024-06-21 18:29:45,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 175 transitions, 2122 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:45,016 INFO L231 Difference]: Finished difference. Result has 180 places, 163 transitions, 1635 flow [2024-06-21 18:29:45,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1635, PETRI_PLACES=180, PETRI_TRANSITIONS=163} [2024-06-21 18:29:45,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-21 18:29:45,017 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 163 transitions, 1635 flow [2024-06-21 18:29:45,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:45,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:45,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:45,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 18:29:45,018 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:45,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -172555864, now seen corresponding path program 3 times [2024-06-21 18:29:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332108010] [2024-06-21 18:29:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:46,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332108010] [2024-06-21 18:29:46,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332108010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:46,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:46,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558039960] [2024-06-21 18:29:46,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:46,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:46,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:46,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:46,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:46,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 163 transitions, 1635 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:46,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:46,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:46,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:46,615 INFO L124 PetriNetUnfolderBase]: 422/739 cut-off events. [2024-06-21 18:29:46,615 INFO L125 PetriNetUnfolderBase]: For 46144/46144 co-relation queries the response was YES. [2024-06-21 18:29:46,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5315 conditions, 739 events. 422/739 cut-off events. For 46144/46144 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3148 event pairs, 72 based on Foata normal form. 1/739 useless extension candidates. Maximal degree in co-relation 5232. Up to 662 conditions per place. [2024-06-21 18:29:46,621 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-21 18:29:46,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 176 transitions, 2127 flow [2024-06-21 18:29:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 18:29:46,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 18:29:46,623 INFO L175 Difference]: Start difference. First operand has 180 places, 163 transitions, 1635 flow. Second operand 9 states and 108 transitions. [2024-06-21 18:29:46,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 176 transitions, 2127 flow [2024-06-21 18:29:46,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2077 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:46,708 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 1676 flow [2024-06-21 18:29:46,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1676, PETRI_PLACES=184, PETRI_TRANSITIONS=165} [2024-06-21 18:29:46,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-21 18:29:46,709 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 1676 flow [2024-06-21 18:29:46,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:46,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:46,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:46,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 18:29:46,709 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:46,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash -172555678, now seen corresponding path program 3 times [2024-06-21 18:29:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:46,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412065981] [2024-06-21 18:29:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:46,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412065981] [2024-06-21 18:29:47,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412065981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:47,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:47,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:47,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674867543] [2024-06-21 18:29:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:47,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:48,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:48,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 165 transitions, 1676 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:48,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:48,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:48,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:48,377 INFO L124 PetriNetUnfolderBase]: 420/736 cut-off events. [2024-06-21 18:29:48,377 INFO L125 PetriNetUnfolderBase]: For 46850/46850 co-relation queries the response was YES. [2024-06-21 18:29:48,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 736 events. 420/736 cut-off events. For 46850/46850 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3124 event pairs, 75 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 5213. Up to 624 conditions per place. [2024-06-21 18:29:48,382 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 139 selfloop transitions, 35 changer transitions 0/176 dead transitions. [2024-06-21 18:29:48,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 176 transitions, 2150 flow [2024-06-21 18:29:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 18:29:48,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:29:48,384 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 1676 flow. Second operand 9 states and 111 transitions. [2024-06-21 18:29:48,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 176 transitions, 2150 flow [2024-06-21 18:29:48,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 176 transitions, 2088 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:48,468 INFO L231 Difference]: Finished difference. Result has 187 places, 165 transitions, 1689 flow [2024-06-21 18:29:48,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1689, PETRI_PLACES=187, PETRI_TRANSITIONS=165} [2024-06-21 18:29:48,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-21 18:29:48,469 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 165 transitions, 1689 flow [2024-06-21 18:29:48,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:48,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:48,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:48,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 18:29:48,469 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:48,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:48,470 INFO L85 PathProgramCache]: Analyzing trace with hash -59278, now seen corresponding path program 4 times [2024-06-21 18:29:48,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:48,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699853413] [2024-06-21 18:29:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:48,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:49,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:49,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699853413] [2024-06-21 18:29:49,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699853413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137160183] [2024-06-21 18:29:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:49,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:49,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 165 transitions, 1689 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:49,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:49,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:49,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:50,220 INFO L124 PetriNetUnfolderBase]: 433/757 cut-off events. [2024-06-21 18:29:50,221 INFO L125 PetriNetUnfolderBase]: For 51303/51303 co-relation queries the response was YES. [2024-06-21 18:29:50,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 757 events. 433/757 cut-off events. For 51303/51303 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3242 event pairs, 75 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 5449. Up to 640 conditions per place. [2024-06-21 18:29:50,226 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-21 18:29:50,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 2459 flow [2024-06-21 18:29:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 18:29:50,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 18:29:50,228 INFO L175 Difference]: Start difference. First operand has 187 places, 165 transitions, 1689 flow. Second operand 9 states and 114 transitions. [2024-06-21 18:29:50,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 2459 flow [2024-06-21 18:29:50,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 186 transitions, 2382 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:50,315 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1773 flow [2024-06-21 18:29:50,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1773, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2024-06-21 18:29:50,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-21 18:29:50,316 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1773 flow [2024-06-21 18:29:50,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:50,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:50,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:50,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 18:29:50,316 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:50,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash -65788, now seen corresponding path program 5 times [2024-06-21 18:29:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:50,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180247131] [2024-06-21 18:29:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180247131] [2024-06-21 18:29:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180247131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:51,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542618144] [2024-06-21 18:29:51,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:51,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:51,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:51,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 1773 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:51,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:51,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:51,979 INFO L124 PetriNetUnfolderBase]: 431/754 cut-off events. [2024-06-21 18:29:51,980 INFO L125 PetriNetUnfolderBase]: For 52008/52008 co-relation queries the response was YES. [2024-06-21 18:29:51,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 754 events. 431/754 cut-off events. For 52008/52008 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3218 event pairs, 75 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 5429. Up to 638 conditions per place. [2024-06-21 18:29:51,986 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 42 changer transitions 0/185 dead transitions. [2024-06-21 18:29:51,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 185 transitions, 2369 flow [2024-06-21 18:29:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 18:29:51,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 18:29:51,987 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1773 flow. Second operand 9 states and 112 transitions. [2024-06-21 18:29:51,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 185 transitions, 2369 flow [2024-06-21 18:29:52,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 185 transitions, 2327 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:52,083 INFO L231 Difference]: Finished difference. Result has 196 places, 174 transitions, 1820 flow [2024-06-21 18:29:52,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1820, PETRI_PLACES=196, PETRI_TRANSITIONS=174} [2024-06-21 18:29:52,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 18:29:52,084 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 174 transitions, 1820 flow [2024-06-21 18:29:52,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:52,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:52,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:52,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 18:29:52,085 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:52,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash 171362, now seen corresponding path program 6 times [2024-06-21 18:29:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:52,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030021391] [2024-06-21 18:29:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:53,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:53,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030021391] [2024-06-21 18:29:53,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030021391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:53,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:53,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:53,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364077465] [2024-06-21 18:29:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:53,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:53,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:53,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 174 transitions, 1820 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:53,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:53,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:53,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:53,856 INFO L124 PetriNetUnfolderBase]: 429/751 cut-off events. [2024-06-21 18:29:53,856 INFO L125 PetriNetUnfolderBase]: For 52813/52813 co-relation queries the response was YES. [2024-06-21 18:29:53,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 751 events. 429/751 cut-off events. For 52813/52813 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3197 event pairs, 73 based on Foata normal form. 1/751 useless extension candidates. Maximal degree in co-relation 5429. Up to 636 conditions per place. [2024-06-21 18:29:53,863 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-21 18:29:53,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 2312 flow [2024-06-21 18:29:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 18:29:53,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 18:29:53,865 INFO L175 Difference]: Start difference. First operand has 196 places, 174 transitions, 1820 flow. Second operand 9 states and 110 transitions. [2024-06-21 18:29:53,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 2312 flow [2024-06-21 18:29:53,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 2247 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:53,964 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1848 flow [2024-06-21 18:29:53,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2024-06-21 18:29:53,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-21 18:29:53,965 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1848 flow [2024-06-21 18:29:53,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:53,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:53,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:53,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 18:29:53,971 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:53,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash -150375634, now seen corresponding path program 4 times [2024-06-21 18:29:53,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:53,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087816615] [2024-06-21 18:29:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:53,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:55,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087816615] [2024-06-21 18:29:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087816615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:55,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783324250] [2024-06-21 18:29:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:55,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:55,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:55,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:55,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 1848 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:55,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:55,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:55,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:55,498 INFO L124 PetriNetUnfolderBase]: 432/756 cut-off events. [2024-06-21 18:29:55,498 INFO L125 PetriNetUnfolderBase]: For 54831/54831 co-relation queries the response was YES. [2024-06-21 18:29:55,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 756 events. 432/756 cut-off events. For 54831/54831 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3233 event pairs, 72 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 5512. Up to 678 conditions per place. [2024-06-21 18:29:55,504 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 34 changer transitions 0/186 dead transitions. [2024-06-21 18:29:55,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 186 transitions, 2368 flow [2024-06-21 18:29:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 18:29:55,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 18:29:55,505 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1848 flow. Second operand 9 states and 108 transitions. [2024-06-21 18:29:55,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 186 transitions, 2368 flow [2024-06-21 18:29:55,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 186 transitions, 2287 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:55,612 INFO L231 Difference]: Finished difference. Result has 202 places, 176 transitions, 1862 flow [2024-06-21 18:29:55,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1862, PETRI_PLACES=202, PETRI_TRANSITIONS=176} [2024-06-21 18:29:55,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-21 18:29:55,613 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 176 transitions, 1862 flow [2024-06-21 18:29:55,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:55,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:55,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:55,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 18:29:55,613 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:55,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1971834596, now seen corresponding path program 7 times [2024-06-21 18:29:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:55,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056528278] [2024-06-21 18:29:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:56,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056528278] [2024-06-21 18:29:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056528278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:56,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628000032] [2024-06-21 18:29:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:56,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:56,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:56,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 176 transitions, 1862 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:56,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:56,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:56,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:57,464 INFO L124 PetriNetUnfolderBase]: 440/769 cut-off events. [2024-06-21 18:29:57,464 INFO L125 PetriNetUnfolderBase]: For 58230/58230 co-relation queries the response was YES. [2024-06-21 18:29:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 769 events. 440/769 cut-off events. For 58230/58230 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3297 event pairs, 71 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 5626. Up to 714 conditions per place. [2024-06-21 18:29:57,469 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 165 selfloop transitions, 26 changer transitions 0/193 dead transitions. [2024-06-21 18:29:57,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 193 transitions, 2533 flow [2024-06-21 18:29:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:29:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:29:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 18:29:57,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-21 18:29:57,471 INFO L175 Difference]: Start difference. First operand has 202 places, 176 transitions, 1862 flow. Second operand 9 states and 106 transitions. [2024-06-21 18:29:57,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 193 transitions, 2533 flow [2024-06-21 18:29:57,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 193 transitions, 2468 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:57,568 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1905 flow [2024-06-21 18:29:57,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1905, PETRI_PLACES=205, PETRI_TRANSITIONS=183} [2024-06-21 18:29:57,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-21 18:29:57,568 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1905 flow [2024-06-21 18:29:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:57,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:57,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:57,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 18:29:57,569 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:57,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:57,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1485491864, now seen corresponding path program 1 times [2024-06-21 18:29:57,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167015836] [2024-06-21 18:29:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:58,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167015836] [2024-06-21 18:29:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167015836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:58,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:29:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148973327] [2024-06-21 18:29:58,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:29:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:29:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:29:58,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:29:58,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 183 transitions, 1905 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:58,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:58,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:29:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:59,381 INFO L124 PetriNetUnfolderBase]: 446/779 cut-off events. [2024-06-21 18:29:59,381 INFO L125 PetriNetUnfolderBase]: For 61946/61946 co-relation queries the response was YES. [2024-06-21 18:29:59,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5786 conditions, 779 events. 446/779 cut-off events. For 61946/61946 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3352 event pairs, 74 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 5696. Up to 736 conditions per place. [2024-06-21 18:29:59,387 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 19 changer transitions 0/195 dead transitions. [2024-06-21 18:29:59,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 195 transitions, 2339 flow [2024-06-21 18:29:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:29:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:29:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 18:29:59,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 18:29:59,388 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1905 flow. Second operand 10 states and 107 transitions. [2024-06-21 18:29:59,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 195 transitions, 2339 flow [2024-06-21 18:29:59,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 195 transitions, 2288 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:59,496 INFO L231 Difference]: Finished difference. Result has 210 places, 185 transitions, 1924 flow [2024-06-21 18:29:59,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=210, PETRI_TRANSITIONS=185} [2024-06-21 18:29:59,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-21 18:29:59,496 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 185 transitions, 1924 flow [2024-06-21 18:29:59,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:59,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:59,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:59,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 18:29:59,497 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:29:59,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:59,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1190033406, now seen corresponding path program 8 times [2024-06-21 18:29:59,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:59,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881195667] [2024-06-21 18:29:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:59,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881195667] [2024-06-21 18:30:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881195667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:00,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:00,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644456557] [2024-06-21 18:30:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:00,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:00,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:00,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:00,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:00,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 185 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:00,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:00,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:00,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:01,191 INFO L124 PetriNetUnfolderBase]: 449/784 cut-off events. [2024-06-21 18:30:01,191 INFO L125 PetriNetUnfolderBase]: For 62358/62358 co-relation queries the response was YES. [2024-06-21 18:30:01,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5863 conditions, 784 events. 449/784 cut-off events. For 62358/62358 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3365 event pairs, 76 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 5772. Up to 728 conditions per place. [2024-06-21 18:30:01,197 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2024-06-21 18:30:01,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 197 transitions, 2572 flow [2024-06-21 18:30:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 18:30:01,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 18:30:01,199 INFO L175 Difference]: Start difference. First operand has 210 places, 185 transitions, 1924 flow. Second operand 9 states and 105 transitions. [2024-06-21 18:30:01,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 197 transitions, 2572 flow [2024-06-21 18:30:01,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 197 transitions, 2520 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 18:30:01,306 INFO L231 Difference]: Finished difference. Result has 211 places, 187 transitions, 1947 flow [2024-06-21 18:30:01,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1947, PETRI_PLACES=211, PETRI_TRANSITIONS=187} [2024-06-21 18:30:01,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-21 18:30:01,307 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 187 transitions, 1947 flow [2024-06-21 18:30:01,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:01,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:01,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:01,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 18:30:01,307 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:01,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:01,308 INFO L85 PathProgramCache]: Analyzing trace with hash -533784156, now seen corresponding path program 9 times [2024-06-21 18:30:01,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:01,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927347680] [2024-06-21 18:30:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:01,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:02,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927347680] [2024-06-21 18:30:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927347680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:02,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:02,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546397040] [2024-06-21 18:30:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:02,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:02,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:02,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:02,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 187 transitions, 1947 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:02,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:02,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:02,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:02,861 INFO L124 PetriNetUnfolderBase]: 447/781 cut-off events. [2024-06-21 18:30:02,862 INFO L125 PetriNetUnfolderBase]: For 62944/62944 co-relation queries the response was YES. [2024-06-21 18:30:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5838 conditions, 781 events. 447/781 cut-off events. For 62944/62944 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3355 event pairs, 70 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 5746. Up to 754 conditions per place. [2024-06-21 18:30:02,868 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 16 changer transitions 0/195 dead transitions. [2024-06-21 18:30:02,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 195 transitions, 2351 flow [2024-06-21 18:30:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 18:30:02,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 18:30:02,870 INFO L175 Difference]: Start difference. First operand has 211 places, 187 transitions, 1947 flow. Second operand 9 states and 98 transitions. [2024-06-21 18:30:02,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 195 transitions, 2351 flow [2024-06-21 18:30:02,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 195 transitions, 2291 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 18:30:02,987 INFO L231 Difference]: Finished difference. Result has 215 places, 187 transitions, 1924 flow [2024-06-21 18:30:02,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1924, PETRI_PLACES=215, PETRI_TRANSITIONS=187} [2024-06-21 18:30:02,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-21 18:30:02,988 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 187 transitions, 1924 flow [2024-06-21 18:30:02,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:02,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:02,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:02,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 18:30:02,988 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:02,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026710, now seen corresponding path program 5 times [2024-06-21 18:30:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:02,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646118325] [2024-06-21 18:30:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646118325] [2024-06-21 18:30:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646118325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:04,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29770070] [2024-06-21 18:30:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:04,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:04,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:04,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:04,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 187 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:04,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:04,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:04,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:04,586 INFO L124 PetriNetUnfolderBase]: 445/778 cut-off events. [2024-06-21 18:30:04,587 INFO L125 PetriNetUnfolderBase]: For 63332/63332 co-relation queries the response was YES. [2024-06-21 18:30:04,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5783 conditions, 778 events. 445/778 cut-off events. For 63332/63332 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3352 event pairs, 72 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 5690. Up to 751 conditions per place. [2024-06-21 18:30:04,593 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 16 changer transitions 0/195 dead transitions. [2024-06-21 18:30:04,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 195 transitions, 2328 flow [2024-06-21 18:30:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 18:30:04,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 18:30:04,594 INFO L175 Difference]: Start difference. First operand has 215 places, 187 transitions, 1924 flow. Second operand 9 states and 98 transitions. [2024-06-21 18:30:04,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 195 transitions, 2328 flow [2024-06-21 18:30:04,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 195 transitions, 2273 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:04,713 INFO L231 Difference]: Finished difference. Result has 217 places, 187 transitions, 1906 flow [2024-06-21 18:30:04,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1906, PETRI_PLACES=217, PETRI_TRANSITIONS=187} [2024-06-21 18:30:04,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-21 18:30:04,714 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 187 transitions, 1906 flow [2024-06-21 18:30:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:04,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:04,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 18:30:04,715 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026896, now seen corresponding path program 10 times [2024-06-21 18:30:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127304842] [2024-06-21 18:30:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:05,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127304842] [2024-06-21 18:30:05,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127304842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:05,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:05,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:05,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701437084] [2024-06-21 18:30:05,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:05,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:06,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:06,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 187 transitions, 1906 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:06,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:06,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:06,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:06,394 INFO L124 PetriNetUnfolderBase]: 443/775 cut-off events. [2024-06-21 18:30:06,394 INFO L125 PetriNetUnfolderBase]: For 63665/63665 co-relation queries the response was YES. [2024-06-21 18:30:06,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 775 events. 443/775 cut-off events. For 63665/63665 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3337 event pairs, 70 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 5649. Up to 721 conditions per place. [2024-06-21 18:30:06,400 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-21 18:30:06,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2310 flow [2024-06-21 18:30:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 18:30:06,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 18:30:06,401 INFO L175 Difference]: Start difference. First operand has 217 places, 187 transitions, 1906 flow. Second operand 9 states and 102 transitions. [2024-06-21 18:30:06,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2310 flow [2024-06-21 18:30:06,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 195 transitions, 2234 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 18:30:06,530 INFO L231 Difference]: Finished difference. Result has 216 places, 187 transitions, 1897 flow [2024-06-21 18:30:06,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1897, PETRI_PLACES=216, PETRI_TRANSITIONS=187} [2024-06-21 18:30:06,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-21 18:30:06,531 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 187 transitions, 1897 flow [2024-06-21 18:30:06,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:06,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:06,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:06,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 18:30:06,532 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:06,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash -103752946, now seen corresponding path program 6 times [2024-06-21 18:30:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780652256] [2024-06-21 18:30:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:06,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:07,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780652256] [2024-06-21 18:30:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780652256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:07,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077710191] [2024-06-21 18:30:07,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:07,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:07,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:07,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 187 transitions, 1897 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:07,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:07,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:07,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:08,217 INFO L124 PetriNetUnfolderBase]: 455/795 cut-off events. [2024-06-21 18:30:08,217 INFO L125 PetriNetUnfolderBase]: For 67542/67542 co-relation queries the response was YES. [2024-06-21 18:30:08,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 795 events. 455/795 cut-off events. For 67542/67542 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3453 event pairs, 51 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 5860. Up to 703 conditions per place. [2024-06-21 18:30:08,228 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 39 changer transitions 0/214 dead transitions. [2024-06-21 18:30:08,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 214 transitions, 2565 flow [2024-06-21 18:30:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:30:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:30:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 18:30:08,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 18:30:08,229 INFO L175 Difference]: Start difference. First operand has 216 places, 187 transitions, 1897 flow. Second operand 11 states and 129 transitions. [2024-06-21 18:30:08,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 214 transitions, 2565 flow [2024-06-21 18:30:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 214 transitions, 2483 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:08,371 INFO L231 Difference]: Finished difference. Result has 221 places, 194 transitions, 1986 flow [2024-06-21 18:30:08,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1986, PETRI_PLACES=221, PETRI_TRANSITIONS=194} [2024-06-21 18:30:08,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-21 18:30:08,372 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 194 transitions, 1986 flow [2024-06-21 18:30:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:08,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:08,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 18:30:08,373 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:08,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1918966008, now seen corresponding path program 7 times [2024-06-21 18:30:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547447894] [2024-06-21 18:30:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547447894] [2024-06-21 18:30:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547447894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628835277] [2024-06-21 18:30:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:09,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:09,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:09,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 194 transitions, 1986 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:09,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:09,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:09,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:10,349 INFO L124 PetriNetUnfolderBase]: 467/815 cut-off events. [2024-06-21 18:30:10,349 INFO L125 PetriNetUnfolderBase]: For 72028/72028 co-relation queries the response was YES. [2024-06-21 18:30:10,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 815 events. 467/815 cut-off events. For 72028/72028 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3577 event pairs, 48 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 6151. Up to 630 conditions per place. [2024-06-21 18:30:10,356 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 71 changer transitions 0/220 dead transitions. [2024-06-21 18:30:10,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 2816 flow [2024-06-21 18:30:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 18:30:10,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:30:10,357 INFO L175 Difference]: Start difference. First operand has 221 places, 194 transitions, 1986 flow. Second operand 10 states and 125 transitions. [2024-06-21 18:30:10,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 2816 flow [2024-06-21 18:30:10,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 220 transitions, 2723 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:10,500 INFO L231 Difference]: Finished difference. Result has 226 places, 202 transitions, 2157 flow [2024-06-21 18:30:10,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2157, PETRI_PLACES=226, PETRI_TRANSITIONS=202} [2024-06-21 18:30:10,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-21 18:30:10,500 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 202 transitions, 2157 flow [2024-06-21 18:30:10,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:10,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:10,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 18:30:10,501 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1922689728, now seen corresponding path program 8 times [2024-06-21 18:30:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020975445] [2024-06-21 18:30:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:11,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:11,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020975445] [2024-06-21 18:30:11,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020975445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:11,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510982005] [2024-06-21 18:30:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:12,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:12,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 202 transitions, 2157 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:12,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:12,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:12,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:12,570 INFO L124 PetriNetUnfolderBase]: 465/812 cut-off events. [2024-06-21 18:30:12,570 INFO L125 PetriNetUnfolderBase]: For 72581/72581 co-relation queries the response was YES. [2024-06-21 18:30:12,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6320 conditions, 812 events. 465/812 cut-off events. For 72581/72581 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3570 event pairs, 50 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 6220. Up to 725 conditions per place. [2024-06-21 18:30:12,578 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-21 18:30:12,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 219 transitions, 2637 flow [2024-06-21 18:30:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 18:30:12,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 18:30:12,580 INFO L175 Difference]: Start difference. First operand has 226 places, 202 transitions, 2157 flow. Second operand 10 states and 119 transitions. [2024-06-21 18:30:12,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 219 transitions, 2637 flow [2024-06-21 18:30:12,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 219 transitions, 2542 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-21 18:30:12,702 INFO L231 Difference]: Finished difference. Result has 232 places, 202 transitions, 2135 flow [2024-06-21 18:30:12,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2135, PETRI_PLACES=232, PETRI_TRANSITIONS=202} [2024-06-21 18:30:12,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-21 18:30:12,703 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 202 transitions, 2135 flow [2024-06-21 18:30:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:12,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:12,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 18:30:12,703 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:12,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1918965822, now seen corresponding path program 11 times [2024-06-21 18:30:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:12,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436800735] [2024-06-21 18:30:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436800735] [2024-06-21 18:30:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436800735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:14,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:14,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580378487] [2024-06-21 18:30:14,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:14,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:14,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 202 transitions, 2135 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:14,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:14,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:14,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:14,654 INFO L124 PetriNetUnfolderBase]: 468/817 cut-off events. [2024-06-21 18:30:14,655 INFO L125 PetriNetUnfolderBase]: For 74505/74505 co-relation queries the response was YES. [2024-06-21 18:30:14,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 817 events. 468/817 cut-off events. For 74505/74505 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3589 event pairs, 50 based on Foata normal form. 1/817 useless extension candidates. Maximal degree in co-relation 6235. Up to 599 conditions per place. [2024-06-21 18:30:14,662 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 93 changer transitions 0/223 dead transitions. [2024-06-21 18:30:14,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 223 transitions, 2771 flow [2024-06-21 18:30:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 18:30:14,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:30:14,664 INFO L175 Difference]: Start difference. First operand has 232 places, 202 transitions, 2135 flow. Second operand 10 states and 125 transitions. [2024-06-21 18:30:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 223 transitions, 2771 flow [2024-06-21 18:30:14,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 223 transitions, 2697 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 18:30:14,816 INFO L231 Difference]: Finished difference. Result has 233 places, 206 transitions, 2280 flow [2024-06-21 18:30:14,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2280, PETRI_PLACES=233, PETRI_TRANSITIONS=206} [2024-06-21 18:30:14,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-21 18:30:14,817 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 206 transitions, 2280 flow [2024-06-21 18:30:14,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:14,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:14,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:14,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 18:30:14,818 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:14,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1976900952, now seen corresponding path program 9 times [2024-06-21 18:30:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:14,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582178085] [2024-06-21 18:30:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582178085] [2024-06-21 18:30:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582178085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:16,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:16,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:16,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186990647] [2024-06-21 18:30:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:16,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:16,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:16,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:16,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:16,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 206 transitions, 2280 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:16,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:16,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:16,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:17,171 INFO L124 PetriNetUnfolderBase]: 475/829 cut-off events. [2024-06-21 18:30:17,171 INFO L125 PetriNetUnfolderBase]: For 77065/77065 co-relation queries the response was YES. [2024-06-21 18:30:17,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6587 conditions, 829 events. 475/829 cut-off events. For 77065/77065 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3663 event pairs, 59 based on Foata normal form. 1/829 useless extension candidates. Maximal degree in co-relation 6485. Up to 740 conditions per place. [2024-06-21 18:30:17,179 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-06-21 18:30:17,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 226 transitions, 2820 flow [2024-06-21 18:30:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 18:30:17,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 18:30:17,181 INFO L175 Difference]: Start difference. First operand has 233 places, 206 transitions, 2280 flow. Second operand 10 states and 119 transitions. [2024-06-21 18:30:17,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 226 transitions, 2820 flow [2024-06-21 18:30:17,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 226 transitions, 2734 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:17,334 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2319 flow [2024-06-21 18:30:17,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2319, PETRI_PLACES=237, PETRI_TRANSITIONS=210} [2024-06-21 18:30:17,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-21 18:30:17,334 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2319 flow [2024-06-21 18:30:17,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:17,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:17,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:17,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 18:30:17,335 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:17,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1883881894, now seen corresponding path program 10 times [2024-06-21 18:30:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299721063] [2024-06-21 18:30:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:18,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:18,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299721063] [2024-06-21 18:30:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299721063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:18,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:18,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411513020] [2024-06-21 18:30:18,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:18,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:19,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:19,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 210 transitions, 2319 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:19,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:19,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:19,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:19,604 INFO L124 PetriNetUnfolderBase]: 483/842 cut-off events. [2024-06-21 18:30:19,604 INFO L125 PetriNetUnfolderBase]: For 81557/81557 co-relation queries the response was YES. [2024-06-21 18:30:19,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6790 conditions, 842 events. 483/842 cut-off events. For 81557/81557 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3733 event pairs, 52 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 6686. Up to 650 conditions per place. [2024-06-21 18:30:19,612 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 70 changer transitions 0/231 dead transitions. [2024-06-21 18:30:19,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 231 transitions, 3137 flow [2024-06-21 18:30:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 18:30:19,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 18:30:19,613 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2319 flow. Second operand 10 states and 127 transitions. [2024-06-21 18:30:19,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 231 transitions, 3137 flow [2024-06-21 18:30:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 231 transitions, 3061 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:19,776 INFO L231 Difference]: Finished difference. Result has 240 places, 214 transitions, 2444 flow [2024-06-21 18:30:19,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2444, PETRI_PLACES=240, PETRI_TRANSITIONS=214} [2024-06-21 18:30:19,776 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-21 18:30:19,776 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 214 transitions, 2444 flow [2024-06-21 18:30:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:19,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:19,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 18:30:19,777 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:19,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1759364938, now seen corresponding path program 12 times [2024-06-21 18:30:19,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:19,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971253711] [2024-06-21 18:30:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:21,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:21,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971253711] [2024-06-21 18:30:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971253711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:21,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143472009] [2024-06-21 18:30:21,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:21,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:21,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:21,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:21,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 214 transitions, 2444 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:21,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:21,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:21,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:22,097 INFO L124 PetriNetUnfolderBase]: 491/855 cut-off events. [2024-06-21 18:30:22,097 INFO L125 PetriNetUnfolderBase]: For 86368/86368 co-relation queries the response was YES. [2024-06-21 18:30:22,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7016 conditions, 855 events. 491/855 cut-off events. For 86368/86368 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3807 event pairs, 52 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 6911. Up to 634 conditions per place. [2024-06-21 18:30:22,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 81 changer transitions 0/235 dead transitions. [2024-06-21 18:30:22,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 235 transitions, 3246 flow [2024-06-21 18:30:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:30:22,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:30:22,105 INFO L175 Difference]: Start difference. First operand has 240 places, 214 transitions, 2444 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:30:22,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 235 transitions, 3246 flow [2024-06-21 18:30:22,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 235 transitions, 3130 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:22,290 INFO L231 Difference]: Finished difference. Result has 244 places, 218 transitions, 2523 flow [2024-06-21 18:30:22,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2523, PETRI_PLACES=244, PETRI_TRANSITIONS=218} [2024-06-21 18:30:22,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-21 18:30:22,290 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 218 transitions, 2523 flow [2024-06-21 18:30:22,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:22,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:22,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 18:30:22,291 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:22,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1740417118, now seen corresponding path program 13 times [2024-06-21 18:30:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:22,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469392667] [2024-06-21 18:30:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:23,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:23,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469392667] [2024-06-21 18:30:23,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469392667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:23,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:23,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034202097] [2024-06-21 18:30:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:23,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:24,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:24,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 218 transitions, 2523 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:24,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:24,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:24,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:24,574 INFO L124 PetriNetUnfolderBase]: 494/860 cut-off events. [2024-06-21 18:30:24,574 INFO L125 PetriNetUnfolderBase]: For 89106/89106 co-relation queries the response was YES. [2024-06-21 18:30:24,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7096 conditions, 860 events. 494/860 cut-off events. For 89106/89106 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3830 event pairs, 54 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 6990. Up to 638 conditions per place. [2024-06-21 18:30:24,583 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 86 changer transitions 0/236 dead transitions. [2024-06-21 18:30:24,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 236 transitions, 3317 flow [2024-06-21 18:30:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 18:30:24,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:30:24,585 INFO L175 Difference]: Start difference. First operand has 244 places, 218 transitions, 2523 flow. Second operand 10 states and 125 transitions. [2024-06-21 18:30:24,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 236 transitions, 3317 flow [2024-06-21 18:30:24,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 236 transitions, 3203 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:24,779 INFO L231 Difference]: Finished difference. Result has 248 places, 220 transitions, 2604 flow [2024-06-21 18:30:24,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2604, PETRI_PLACES=248, PETRI_TRANSITIONS=220} [2024-06-21 18:30:24,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-21 18:30:24,780 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 220 transitions, 2604 flow [2024-06-21 18:30:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:24,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:24,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:24,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 18:30:24,781 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:24,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1981662738, now seen corresponding path program 14 times [2024-06-21 18:30:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935515580] [2024-06-21 18:30:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935515580] [2024-06-21 18:30:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935515580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:26,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748740622] [2024-06-21 18:30:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:26,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:26,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:26,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:26,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 220 transitions, 2604 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:26,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:26,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:26,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:27,014 INFO L124 PetriNetUnfolderBase]: 492/857 cut-off events. [2024-06-21 18:30:27,014 INFO L125 PetriNetUnfolderBase]: For 89675/89675 co-relation queries the response was YES. [2024-06-21 18:30:27,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 857 events. 492/857 cut-off events. For 89675/89675 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3821 event pairs, 56 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 6973. Up to 636 conditions per place. [2024-06-21 18:30:27,022 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 84 changer transitions 0/235 dead transitions. [2024-06-21 18:30:27,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 235 transitions, 3244 flow [2024-06-21 18:30:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 18:30:27,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:30:27,023 INFO L175 Difference]: Start difference. First operand has 248 places, 220 transitions, 2604 flow. Second operand 10 states and 125 transitions. [2024-06-21 18:30:27,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 235 transitions, 3244 flow [2024-06-21 18:30:27,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 235 transitions, 3083 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:27,207 INFO L231 Difference]: Finished difference. Result has 251 places, 220 transitions, 2616 flow [2024-06-21 18:30:27,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2616, PETRI_PLACES=251, PETRI_TRANSITIONS=220} [2024-06-21 18:30:27,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 18:30:27,208 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 220 transitions, 2616 flow [2024-06-21 18:30:27,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:27,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:27,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:27,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 18:30:27,209 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:27,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1759192144, now seen corresponding path program 11 times [2024-06-21 18:30:27,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:27,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321582470] [2024-06-21 18:30:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:28,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321582470] [2024-06-21 18:30:28,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321582470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:28,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:28,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816929108] [2024-06-21 18:30:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:28,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:29,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:29,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 220 transitions, 2616 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:29,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:29,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:29,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:29,570 INFO L124 PetriNetUnfolderBase]: 490/854 cut-off events. [2024-06-21 18:30:29,571 INFO L125 PetriNetUnfolderBase]: For 89932/89932 co-relation queries the response was YES. [2024-06-21 18:30:29,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 854 events. 490/854 cut-off events. For 89932/89932 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3809 event pairs, 51 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 6931. Up to 663 conditions per place. [2024-06-21 18:30:29,579 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 73 changer transitions 0/235 dead transitions. [2024-06-21 18:30:29,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 235 transitions, 3258 flow [2024-06-21 18:30:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:30:29,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 18:30:29,581 INFO L175 Difference]: Start difference. First operand has 251 places, 220 transitions, 2616 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:30:29,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 235 transitions, 3258 flow [2024-06-21 18:30:29,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 235 transitions, 3063 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 18:30:29,757 INFO L231 Difference]: Finished difference. Result has 251 places, 220 transitions, 2572 flow [2024-06-21 18:30:29,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2572, PETRI_PLACES=251, PETRI_TRANSITIONS=220} [2024-06-21 18:30:29,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 18:30:29,758 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 220 transitions, 2572 flow [2024-06-21 18:30:29,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:29,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:29,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:29,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 18:30:29,758 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:29,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1759185200, now seen corresponding path program 2 times [2024-06-21 18:30:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3907237] [2024-06-21 18:30:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:29,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:31,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:31,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3907237] [2024-06-21 18:30:31,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3907237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:31,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:31,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:31,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778208713] [2024-06-21 18:30:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:31,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:31,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:31,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:31,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 220 transitions, 2572 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:31,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:31,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:31,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:31,869 INFO L124 PetriNetUnfolderBase]: 499/869 cut-off events. [2024-06-21 18:30:31,869 INFO L125 PetriNetUnfolderBase]: For 94951/94951 co-relation queries the response was YES. [2024-06-21 18:30:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7109 conditions, 869 events. 499/869 cut-off events. For 94951/94951 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3888 event pairs, 57 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 7000. Up to 643 conditions per place. [2024-06-21 18:30:31,877 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 70 changer transitions 0/244 dead transitions. [2024-06-21 18:30:31,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 244 transitions, 3306 flow [2024-06-21 18:30:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:30:31,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 18:30:31,878 INFO L175 Difference]: Start difference. First operand has 251 places, 220 transitions, 2572 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:30:31,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 244 transitions, 3306 flow [2024-06-21 18:30:32,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 244 transitions, 3147 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 18:30:32,060 INFO L231 Difference]: Finished difference. Result has 253 places, 226 transitions, 2675 flow [2024-06-21 18:30:32,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=253, PETRI_TRANSITIONS=226} [2024-06-21 18:30:32,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-21 18:30:32,060 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 226 transitions, 2675 flow [2024-06-21 18:30:32,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:32,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:32,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:32,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 18:30:32,061 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:32,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1230208810, now seen corresponding path program 12 times [2024-06-21 18:30:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762284079] [2024-06-21 18:30:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762284079] [2024-06-21 18:30:33,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762284079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:33,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512786550] [2024-06-21 18:30:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:34,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:34,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 226 transitions, 2675 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:34,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:34,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:34,607 INFO L124 PetriNetUnfolderBase]: 497/866 cut-off events. [2024-06-21 18:30:34,607 INFO L125 PetriNetUnfolderBase]: For 92771/92771 co-relation queries the response was YES. [2024-06-21 18:30:34,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7184 conditions, 866 events. 497/866 cut-off events. For 92771/92771 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3870 event pairs, 53 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 7073. Up to 777 conditions per place. [2024-06-21 18:30:34,616 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 34 changer transitions 0/242 dead transitions. [2024-06-21 18:30:34,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 242 transitions, 3212 flow [2024-06-21 18:30:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 18:30:34,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 18:30:34,617 INFO L175 Difference]: Start difference. First operand has 253 places, 226 transitions, 2675 flow. Second operand 10 states and 119 transitions. [2024-06-21 18:30:34,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 242 transitions, 3212 flow [2024-06-21 18:30:34,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 242 transitions, 3135 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:34,801 INFO L231 Difference]: Finished difference. Result has 257 places, 227 transitions, 2686 flow [2024-06-21 18:30:34,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2686, PETRI_PLACES=257, PETRI_TRANSITIONS=227} [2024-06-21 18:30:34,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 18:30:34,802 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 227 transitions, 2686 flow [2024-06-21 18:30:34,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:34,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:34,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:34,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 18:30:34,803 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:34,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1230328780, now seen corresponding path program 13 times [2024-06-21 18:30:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:34,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370383031] [2024-06-21 18:30:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:34,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:36,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:36,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370383031] [2024-06-21 18:30:36,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370383031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:36,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102123659] [2024-06-21 18:30:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:36,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:36,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 227 transitions, 2686 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:36,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:36,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:36,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:37,339 INFO L124 PetriNetUnfolderBase]: 500/871 cut-off events. [2024-06-21 18:30:37,339 INFO L125 PetriNetUnfolderBase]: For 95124/95124 co-relation queries the response was YES. [2024-06-21 18:30:37,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7250 conditions, 871 events. 500/871 cut-off events. For 95124/95124 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3890 event pairs, 65 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 7137. Up to 680 conditions per place. [2024-06-21 18:30:37,347 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 71 changer transitions 0/244 dead transitions. [2024-06-21 18:30:37,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 244 transitions, 3384 flow [2024-06-21 18:30:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:30:37,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 18:30:37,349 INFO L175 Difference]: Start difference. First operand has 257 places, 227 transitions, 2686 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:30:37,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 244 transitions, 3384 flow [2024-06-21 18:30:37,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 3270 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 18:30:37,552 INFO L231 Difference]: Finished difference. Result has 257 places, 229 transitions, 2749 flow [2024-06-21 18:30:37,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2749, PETRI_PLACES=257, PETRI_TRANSITIONS=229} [2024-06-21 18:30:37,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 18:30:37,553 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 229 transitions, 2749 flow [2024-06-21 18:30:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:37,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:37,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:37,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 18:30:37,553 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:37,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1230328966, now seen corresponding path program 15 times [2024-06-21 18:30:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719125776] [2024-06-21 18:30:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:37,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:39,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:39,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719125776] [2024-06-21 18:30:39,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719125776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:39,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:39,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:39,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494833779] [2024-06-21 18:30:39,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:39,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:39,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:39,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:39,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 229 transitions, 2749 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:39,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:39,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:39,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:40,147 INFO L124 PetriNetUnfolderBase]: 503/876 cut-off events. [2024-06-21 18:30:40,147 INFO L125 PetriNetUnfolderBase]: For 97802/97802 co-relation queries the response was YES. [2024-06-21 18:30:40,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 876 events. 503/876 cut-off events. For 97802/97802 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3935 event pairs, 63 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 7240. Up to 654 conditions per place. [2024-06-21 18:30:40,155 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 82 changer transitions 0/246 dead transitions. [2024-06-21 18:30:40,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 246 transitions, 3439 flow [2024-06-21 18:30:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 18:30:40,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 18:30:40,157 INFO L175 Difference]: Start difference. First operand has 257 places, 229 transitions, 2749 flow. Second operand 10 states and 127 transitions. [2024-06-21 18:30:40,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 246 transitions, 3439 flow [2024-06-21 18:30:40,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 246 transitions, 3176 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 18:30:40,369 INFO L231 Difference]: Finished difference. Result has 257 places, 231 transitions, 2671 flow [2024-06-21 18:30:40,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2671, PETRI_PLACES=257, PETRI_TRANSITIONS=231} [2024-06-21 18:30:40,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 18:30:40,369 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 231 transitions, 2671 flow [2024-06-21 18:30:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:40,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:40,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:40,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 18:30:40,370 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:40,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:40,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1234977354, now seen corresponding path program 3 times [2024-06-21 18:30:40,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:40,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725577842] [2024-06-21 18:30:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:40,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725577842] [2024-06-21 18:30:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725577842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:41,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:41,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936180357] [2024-06-21 18:30:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:41,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:42,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:42,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 231 transitions, 2671 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:42,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:42,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:42,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:42,580 INFO L124 PetriNetUnfolderBase]: 509/886 cut-off events. [2024-06-21 18:30:42,580 INFO L125 PetriNetUnfolderBase]: For 102788/102788 co-relation queries the response was YES. [2024-06-21 18:30:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 886 events. 509/886 cut-off events. For 102788/102788 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3990 event pairs, 66 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 7266. Up to 656 conditions per place. [2024-06-21 18:30:42,590 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 62 changer transitions 0/251 dead transitions. [2024-06-21 18:30:42,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 251 transitions, 3399 flow [2024-06-21 18:30:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 18:30:42,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:30:42,592 INFO L175 Difference]: Start difference. First operand has 257 places, 231 transitions, 2671 flow. Second operand 10 states and 130 transitions. [2024-06-21 18:30:42,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 251 transitions, 3399 flow [2024-06-21 18:30:42,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 251 transitions, 3084 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 18:30:42,822 INFO L231 Difference]: Finished difference. Result has 257 places, 233 transitions, 2515 flow [2024-06-21 18:30:42,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2515, PETRI_PLACES=257, PETRI_TRANSITIONS=233} [2024-06-21 18:30:42,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 18:30:42,822 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 233 transitions, 2515 flow [2024-06-21 18:30:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:42,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:42,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 18:30:42,823 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:42,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1234977106, now seen corresponding path program 16 times [2024-06-21 18:30:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765302018] [2024-06-21 18:30:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:44,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765302018] [2024-06-21 18:30:44,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765302018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:44,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:44,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327391658] [2024-06-21 18:30:44,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:44,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:44,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:44,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 233 transitions, 2515 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:44,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:44,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:44,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:45,359 INFO L124 PetriNetUnfolderBase]: 517/899 cut-off events. [2024-06-21 18:30:45,360 INFO L125 PetriNetUnfolderBase]: For 105244/105244 co-relation queries the response was YES. [2024-06-21 18:30:45,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 899 events. 517/899 cut-off events. For 105244/105244 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4065 event pairs, 65 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 7270. Up to 674 conditions per place. [2024-06-21 18:30:45,368 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 84 changer transitions 0/252 dead transitions. [2024-06-21 18:30:45,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 252 transitions, 3373 flow [2024-06-21 18:30:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:30:45,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:30:45,370 INFO L175 Difference]: Start difference. First operand has 257 places, 233 transitions, 2515 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:30:45,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 252 transitions, 3373 flow [2024-06-21 18:30:45,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 252 transitions, 3247 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:45,597 INFO L231 Difference]: Finished difference. Result has 260 places, 237 transitions, 2582 flow [2024-06-21 18:30:45,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2582, PETRI_PLACES=260, PETRI_TRANSITIONS=237} [2024-06-21 18:30:45,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-21 18:30:45,600 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 237 transitions, 2582 flow [2024-06-21 18:30:45,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:45,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:45,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:45,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 18:30:45,601 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:45,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1234970596, now seen corresponding path program 17 times [2024-06-21 18:30:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038894207] [2024-06-21 18:30:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:47,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:47,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038894207] [2024-06-21 18:30:47,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038894207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:47,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:47,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:47,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483549870] [2024-06-21 18:30:47,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:47,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:47,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:47,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 237 transitions, 2582 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:47,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:47,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:47,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:48,131 INFO L124 PetriNetUnfolderBase]: 515/896 cut-off events. [2024-06-21 18:30:48,131 INFO L125 PetriNetUnfolderBase]: For 105333/105333 co-relation queries the response was YES. [2024-06-21 18:30:48,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 896 events. 515/896 cut-off events. For 105333/105333 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4051 event pairs, 61 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 7164. Up to 672 conditions per place. [2024-06-21 18:30:48,140 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 83 changer transitions 0/251 dead transitions. [2024-06-21 18:30:48,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 251 transitions, 3268 flow [2024-06-21 18:30:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:30:48,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:30:48,141 INFO L175 Difference]: Start difference. First operand has 260 places, 237 transitions, 2582 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:30:48,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 251 transitions, 3268 flow [2024-06-21 18:30:48,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 251 transitions, 3119 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:48,381 INFO L231 Difference]: Finished difference. Result has 264 places, 237 transitions, 2604 flow [2024-06-21 18:30:48,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2604, PETRI_PLACES=264, PETRI_TRANSITIONS=237} [2024-06-21 18:30:48,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-21 18:30:48,382 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 237 transitions, 2604 flow [2024-06-21 18:30:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:48,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:48,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:48,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 18:30:48,383 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:48,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:48,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1234970410, now seen corresponding path program 14 times [2024-06-21 18:30:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:48,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710774569] [2024-06-21 18:30:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:48,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:50,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710774569] [2024-06-21 18:30:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710774569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:50,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:50,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866161665] [2024-06-21 18:30:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:50,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:50,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:50,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 237 transitions, 2604 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:50,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:50,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:50,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:50,885 INFO L124 PetriNetUnfolderBase]: 518/901 cut-off events. [2024-06-21 18:30:50,885 INFO L125 PetriNetUnfolderBase]: For 108093/108093 co-relation queries the response was YES. [2024-06-21 18:30:50,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 901 events. 518/901 cut-off events. For 108093/108093 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4079 event pairs, 67 based on Foata normal form. 1/901 useless extension candidates. Maximal degree in co-relation 7242. Up to 709 conditions per place. [2024-06-21 18:30:50,894 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 72 changer transitions 0/253 dead transitions. [2024-06-21 18:30:50,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 253 transitions, 3320 flow [2024-06-21 18:30:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:30:50,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 18:30:50,895 INFO L175 Difference]: Start difference. First operand has 264 places, 237 transitions, 2604 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:30:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 253 transitions, 3320 flow [2024-06-21 18:30:51,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 253 transitions, 3148 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:30:51,123 INFO L231 Difference]: Finished difference. Result has 265 places, 239 transitions, 2605 flow [2024-06-21 18:30:51,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=265, PETRI_TRANSITIONS=239} [2024-06-21 18:30:51,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 18:30:51,124 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 239 transitions, 2605 flow [2024-06-21 18:30:51,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:51,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:51,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 18:30:51,124 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1987137530, now seen corresponding path program 4 times [2024-06-21 18:30:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665779202] [2024-06-21 18:30:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665779202] [2024-06-21 18:30:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665779202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:52,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:52,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654839681] [2024-06-21 18:30:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:52,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:52,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:52,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:52,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:52,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 239 transitions, 2605 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:52,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:52,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:52,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:53,344 INFO L124 PetriNetUnfolderBase]: 534/927 cut-off events. [2024-06-21 18:30:53,345 INFO L125 PetriNetUnfolderBase]: For 120165/120165 co-relation queries the response was YES. [2024-06-21 18:30:53,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7674 conditions, 927 events. 534/927 cut-off events. For 120165/120165 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4225 event pairs, 59 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 7558. Up to 686 conditions per place. [2024-06-21 18:30:53,354 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 69 changer transitions 0/261 dead transitions. [2024-06-21 18:30:53,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 261 transitions, 3541 flow [2024-06-21 18:30:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:30:53,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:30:53,355 INFO L175 Difference]: Start difference. First operand has 265 places, 239 transitions, 2605 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:30:53,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 261 transitions, 3541 flow [2024-06-21 18:30:53,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 3394 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:53,618 INFO L231 Difference]: Finished difference. Result has 268 places, 243 transitions, 2657 flow [2024-06-21 18:30:53,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2657, PETRI_PLACES=268, PETRI_TRANSITIONS=243} [2024-06-21 18:30:53,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-21 18:30:53,618 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 243 transitions, 2657 flow [2024-06-21 18:30:53,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:53,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:53,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:53,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 18:30:53,619 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:53,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1405081902, now seen corresponding path program 18 times [2024-06-21 18:30:53,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:53,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997139965] [2024-06-21 18:30:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:53,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997139965] [2024-06-21 18:30:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997139965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462363330] [2024-06-21 18:30:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:55,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:55,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 243 transitions, 2657 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:55,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:55,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:56,022 INFO L124 PetriNetUnfolderBase]: 537/932 cut-off events. [2024-06-21 18:30:56,023 INFO L125 PetriNetUnfolderBase]: For 120302/120302 co-relation queries the response was YES. [2024-06-21 18:30:56,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7748 conditions, 932 events. 537/932 cut-off events. For 120302/120302 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4251 event pairs, 59 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 7631. Up to 707 conditions per place. [2024-06-21 18:30:56,031 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 89 changer transitions 0/258 dead transitions. [2024-06-21 18:30:56,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 258 transitions, 3371 flow [2024-06-21 18:30:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 18:30:56,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 18:30:56,038 INFO L175 Difference]: Start difference. First operand has 268 places, 243 transitions, 2657 flow. Second operand 10 states and 124 transitions. [2024-06-21 18:30:56,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 258 transitions, 3371 flow [2024-06-21 18:30:56,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 258 transitions, 3238 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:56,334 INFO L231 Difference]: Finished difference. Result has 272 places, 245 transitions, 2719 flow [2024-06-21 18:30:56,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2719, PETRI_PLACES=272, PETRI_TRANSITIONS=245} [2024-06-21 18:30:56,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-21 18:30:56,335 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 245 transitions, 2719 flow [2024-06-21 18:30:56,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:56,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:56,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:56,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 18:30:56,335 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:56,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1407697636, now seen corresponding path program 19 times [2024-06-21 18:30:56,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:56,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613451338] [2024-06-21 18:30:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613451338] [2024-06-21 18:30:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613451338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:58,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:58,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148517672] [2024-06-21 18:30:58,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:58,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:58,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:30:58,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 245 transitions, 2719 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:58,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:58,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:30:58,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:58,822 INFO L124 PetriNetUnfolderBase]: 540/937 cut-off events. [2024-06-21 18:30:58,822 INFO L125 PetriNetUnfolderBase]: For 123066/123066 co-relation queries the response was YES. [2024-06-21 18:30:58,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7800 conditions, 937 events. 540/937 cut-off events. For 123066/123066 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4260 event pairs, 59 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 7682. Up to 711 conditions per place. [2024-06-21 18:30:58,831 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 97 changer transitions 0/260 dead transitions. [2024-06-21 18:30:58,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 260 transitions, 3443 flow [2024-06-21 18:30:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:30:58,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 18:30:58,833 INFO L175 Difference]: Start difference. First operand has 272 places, 245 transitions, 2719 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:30:58,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 260 transitions, 3443 flow [2024-06-21 18:30:59,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 260 transitions, 3236 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 18:30:59,133 INFO L231 Difference]: Finished difference. Result has 273 places, 247 transitions, 2727 flow [2024-06-21 18:30:59,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2727, PETRI_PLACES=273, PETRI_TRANSITIONS=247} [2024-06-21 18:30:59,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-21 18:30:59,134 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 247 transitions, 2727 flow [2024-06-21 18:30:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:59,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:59,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:59,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 18:30:59,134 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:30:59,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1407460300, now seen corresponding path program 15 times [2024-06-21 18:30:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494477274] [2024-06-21 18:30:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494477274] [2024-06-21 18:31:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494477274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:01,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142274145] [2024-06-21 18:31:01,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:01,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:01,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 247 transitions, 2727 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:01,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:01,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:01,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:01,687 INFO L124 PetriNetUnfolderBase]: 538/934 cut-off events. [2024-06-21 18:31:01,687 INFO L125 PetriNetUnfolderBase]: For 122782/122782 co-relation queries the response was YES. [2024-06-21 18:31:01,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7743 conditions, 934 events. 538/934 cut-off events. For 122782/122782 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4259 event pairs, 63 based on Foata normal form. 1/934 useless extension candidates. Maximal degree in co-relation 7624. Up to 743 conditions per place. [2024-06-21 18:31:01,695 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 78 changer transitions 0/259 dead transitions. [2024-06-21 18:31:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 259 transitions, 3271 flow [2024-06-21 18:31:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 18:31:01,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-21 18:31:01,697 INFO L175 Difference]: Start difference. First operand has 273 places, 247 transitions, 2727 flow. Second operand 10 states and 121 transitions. [2024-06-21 18:31:01,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 259 transitions, 3271 flow [2024-06-21 18:31:01,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 259 transitions, 3101 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:01,978 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2718 flow [2024-06-21 18:31:01,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2718, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2024-06-21 18:31:01,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-21 18:31:01,978 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2718 flow [2024-06-21 18:31:01,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:01,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:01,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:01,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 18:31:01,979 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:01,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1407706254, now seen corresponding path program 5 times [2024-06-21 18:31:01,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:01,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368643562] [2024-06-21 18:31:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:03,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368643562] [2024-06-21 18:31:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368643562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687966971] [2024-06-21 18:31:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:03,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:03,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 2718 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:03,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:03,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:03,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:04,303 INFO L124 PetriNetUnfolderBase]: 534/928 cut-off events. [2024-06-21 18:31:04,303 INFO L125 PetriNetUnfolderBase]: For 122395/122395 co-relation queries the response was YES. [2024-06-21 18:31:04,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 928 events. 534/928 cut-off events. For 122395/122395 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4227 event pairs, 59 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 7440. Up to 690 conditions per place. [2024-06-21 18:31:04,314 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 71 changer transitions 0/263 dead transitions. [2024-06-21 18:31:04,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3448 flow [2024-06-21 18:31:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:31:04,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:31:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 18:31:04,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 18:31:04,316 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2718 flow. Second operand 9 states and 119 transitions. [2024-06-21 18:31:04,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3448 flow [2024-06-21 18:31:04,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 3226 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 18:31:04,614 INFO L231 Difference]: Finished difference. Result has 274 places, 247 transitions, 2643 flow [2024-06-21 18:31:04,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2643, PETRI_PLACES=274, PETRI_TRANSITIONS=247} [2024-06-21 18:31:04,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-21 18:31:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 247 transitions, 2643 flow [2024-06-21 18:31:04,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:04,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:04,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:04,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 18:31:04,615 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:04,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1405088660, now seen corresponding path program 6 times [2024-06-21 18:31:04,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:04,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54304793] [2024-06-21 18:31:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:04,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54304793] [2024-06-21 18:31:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54304793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:06,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593369538] [2024-06-21 18:31:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:06,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:06,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:06,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 247 transitions, 2643 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:06,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:06,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:06,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:06,838 INFO L124 PetriNetUnfolderBase]: 530/922 cut-off events. [2024-06-21 18:31:06,838 INFO L125 PetriNetUnfolderBase]: For 118602/118602 co-relation queries the response was YES. [2024-06-21 18:31:06,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7327 conditions, 922 events. 530/922 cut-off events. For 118602/118602 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4211 event pairs, 58 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 7208. Up to 687 conditions per place. [2024-06-21 18:31:06,847 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 67 changer transitions 0/263 dead transitions. [2024-06-21 18:31:06,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 263 transitions, 3211 flow [2024-06-21 18:31:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 18:31:06,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 18:31:06,848 INFO L175 Difference]: Start difference. First operand has 274 places, 247 transitions, 2643 flow. Second operand 10 states and 127 transitions. [2024-06-21 18:31:06,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 263 transitions, 3211 flow [2024-06-21 18:31:07,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 263 transitions, 3065 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:07,183 INFO L231 Difference]: Finished difference. Result has 277 places, 247 transitions, 2636 flow [2024-06-21 18:31:07,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2636, PETRI_PLACES=277, PETRI_TRANSITIONS=247} [2024-06-21 18:31:07,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-21 18:31:07,184 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 247 transitions, 2636 flow [2024-06-21 18:31:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:07,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:07,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 18:31:07,185 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:07,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1407466996, now seen corresponding path program 20 times [2024-06-21 18:31:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:07,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151379209] [2024-06-21 18:31:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:08,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:08,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151379209] [2024-06-21 18:31:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151379209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:08,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26040932] [2024-06-21 18:31:08,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:08,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:08,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:09,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:09,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 247 transitions, 2636 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:09,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:09,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:09,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:09,593 INFO L124 PetriNetUnfolderBase]: 528/919 cut-off events. [2024-06-21 18:31:09,593 INFO L125 PetriNetUnfolderBase]: For 114377/114377 co-relation queries the response was YES. [2024-06-21 18:31:09,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 919 events. 528/919 cut-off events. For 114377/114377 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4199 event pairs, 57 based on Foata normal form. 1/919 useless extension candidates. Maximal degree in co-relation 7128. Up to 694 conditions per place. [2024-06-21 18:31:09,602 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 90 changer transitions 0/259 dead transitions. [2024-06-21 18:31:09,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 259 transitions, 3180 flow [2024-06-21 18:31:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 18:31:09,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 18:31:09,603 INFO L175 Difference]: Start difference. First operand has 277 places, 247 transitions, 2636 flow. Second operand 10 states and 124 transitions. [2024-06-21 18:31:09,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 259 transitions, 3180 flow [2024-06-21 18:31:09,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 259 transitions, 3003 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:31:09,866 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2644 flow [2024-06-21 18:31:09,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2644, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2024-06-21 18:31:09,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-21 18:31:09,866 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2644 flow [2024-06-21 18:31:09,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:09,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:09,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:09,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 18:31:09,867 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:09,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1566595471, now seen corresponding path program 1 times [2024-06-21 18:31:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:09,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053821540] [2024-06-21 18:31:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:09,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:11,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053821540] [2024-06-21 18:31:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053821540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:11,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:11,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:31:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452995419] [2024-06-21 18:31:11,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:11,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:31:11,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:31:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:31:11,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:11,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 2644 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:11,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:11,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:11,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:12,292 INFO L124 PetriNetUnfolderBase]: 540/940 cut-off events. [2024-06-21 18:31:12,292 INFO L125 PetriNetUnfolderBase]: For 120381/120381 co-relation queries the response was YES. [2024-06-21 18:31:12,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 940 events. 540/940 cut-off events. For 120381/120381 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4343 event pairs, 106 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 7332. Up to 892 conditions per place. [2024-06-21 18:31:12,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 22 changer transitions 0/269 dead transitions. [2024-06-21 18:31:12,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 269 transitions, 3442 flow [2024-06-21 18:31:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:31:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:31:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 18:31:12,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-21 18:31:12,303 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2644 flow. Second operand 12 states and 129 transitions. [2024-06-21 18:31:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 269 transitions, 3442 flow [2024-06-21 18:31:12,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 269 transitions, 3223 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:31:12,618 INFO L231 Difference]: Finished difference. Result has 279 places, 253 transitions, 2538 flow [2024-06-21 18:31:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2538, PETRI_PLACES=279, PETRI_TRANSITIONS=253} [2024-06-21 18:31:12,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-21 18:31:12,619 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 253 transitions, 2538 flow [2024-06-21 18:31:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:12,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:12,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:12,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 18:31:12,620 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:12,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1562930186, now seen corresponding path program 1 times [2024-06-21 18:31:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080307672] [2024-06-21 18:31:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080307672] [2024-06-21 18:31:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080307672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:14,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794838517] [2024-06-21 18:31:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:14,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:14,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 253 transitions, 2538 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:14,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:14,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:14,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:14,694 INFO L124 PetriNetUnfolderBase]: 543/945 cut-off events. [2024-06-21 18:31:14,695 INFO L125 PetriNetUnfolderBase]: For 122932/122932 co-relation queries the response was YES. [2024-06-21 18:31:14,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 945 events. 543/945 cut-off events. For 122932/122932 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4378 event pairs, 105 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 7278. Up to 906 conditions per place. [2024-06-21 18:31:14,704 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 18 changer transitions 0/268 dead transitions. [2024-06-21 18:31:14,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 268 transitions, 3120 flow [2024-06-21 18:31:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 18:31:14,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 18:31:14,705 INFO L175 Difference]: Start difference. First operand has 279 places, 253 transitions, 2538 flow. Second operand 10 states and 111 transitions. [2024-06-21 18:31:14,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 268 transitions, 3120 flow [2024-06-21 18:31:14,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3073 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:14,967 INFO L231 Difference]: Finished difference. Result has 281 places, 255 transitions, 2550 flow [2024-06-21 18:31:14,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2550, PETRI_PLACES=281, PETRI_TRANSITIONS=255} [2024-06-21 18:31:14,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-21 18:31:14,968 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 255 transitions, 2550 flow [2024-06-21 18:31:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:14,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:14,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 18:31:14,968 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:14,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1566505261, now seen corresponding path program 2 times [2024-06-21 18:31:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944108214] [2024-06-21 18:31:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:16,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944108214] [2024-06-21 18:31:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944108214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:16,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:31:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305967490] [2024-06-21 18:31:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:16,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:31:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:31:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:31:16,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:16,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 255 transitions, 2550 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:16,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:16,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:17,121 INFO L124 PetriNetUnfolderBase]: 541/942 cut-off events. [2024-06-21 18:31:17,121 INFO L125 PetriNetUnfolderBase]: For 121902/121902 co-relation queries the response was YES. [2024-06-21 18:31:17,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 942 events. 541/942 cut-off events. For 121902/121902 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4350 event pairs, 105 based on Foata normal form. 1/942 useless extension candidates. Maximal degree in co-relation 7233. Up to 903 conditions per place. [2024-06-21 18:31:17,130 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 18 changer transitions 0/268 dead transitions. [2024-06-21 18:31:17,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 268 transitions, 3118 flow [2024-06-21 18:31:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 18:31:17,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 18:31:17,132 INFO L175 Difference]: Start difference. First operand has 281 places, 255 transitions, 2550 flow. Second operand 11 states and 117 transitions. [2024-06-21 18:31:17,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 268 transitions, 3118 flow [2024-06-21 18:31:17,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 268 transitions, 3069 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:17,439 INFO L231 Difference]: Finished difference. Result has 284 places, 255 transitions, 2542 flow [2024-06-21 18:31:17,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2542, PETRI_PLACES=284, PETRI_TRANSITIONS=255} [2024-06-21 18:31:17,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-21 18:31:17,440 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2542 flow [2024-06-21 18:31:17,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:17,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:17,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 18:31:17,441 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:17,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1198148292, now seen corresponding path program 2 times [2024-06-21 18:31:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:17,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607594717] [2024-06-21 18:31:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607594717] [2024-06-21 18:31:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607594717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:18,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923155979] [2024-06-21 18:31:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:18,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:18,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:18,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:18,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 255 transitions, 2542 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:18,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:18,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:18,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:19,223 INFO L124 PetriNetUnfolderBase]: 554/963 cut-off events. [2024-06-21 18:31:19,223 INFO L125 PetriNetUnfolderBase]: For 132401/132401 co-relation queries the response was YES. [2024-06-21 18:31:19,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7655 conditions, 963 events. 554/963 cut-off events. For 132401/132401 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4471 event pairs, 108 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 7528. Up to 789 conditions per place. [2024-06-21 18:31:19,232 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 63 changer transitions 0/275 dead transitions. [2024-06-21 18:31:19,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 275 transitions, 3530 flow [2024-06-21 18:31:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:31:19,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 18:31:19,234 INFO L175 Difference]: Start difference. First operand has 284 places, 255 transitions, 2542 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:31:19,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 275 transitions, 3530 flow [2024-06-21 18:31:19,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 275 transitions, 3495 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 18:31:19,573 INFO L231 Difference]: Finished difference. Result has 285 places, 261 transitions, 2696 flow [2024-06-21 18:31:19,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2696, PETRI_PLACES=285, PETRI_TRANSITIONS=261} [2024-06-21 18:31:19,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-21 18:31:19,574 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 261 transitions, 2696 flow [2024-06-21 18:31:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:19,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:19,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 18:31:19,575 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1198148075, now seen corresponding path program 1 times [2024-06-21 18:31:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135378112] [2024-06-21 18:31:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135378112] [2024-06-21 18:31:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135378112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563452316] [2024-06-21 18:31:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:21,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:21,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 261 transitions, 2696 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:21,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:21,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:21,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:21,692 INFO L124 PetriNetUnfolderBase]: 570/989 cut-off events. [2024-06-21 18:31:21,692 INFO L125 PetriNetUnfolderBase]: For 147595/147595 co-relation queries the response was YES. [2024-06-21 18:31:21,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 989 events. 570/989 cut-off events. For 147595/147595 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4621 event pairs, 105 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7970. Up to 729 conditions per place. [2024-06-21 18:31:21,702 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 211 selfloop transitions, 69 changer transitions 0/282 dead transitions. [2024-06-21 18:31:21,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 282 transitions, 3524 flow [2024-06-21 18:31:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 18:31:21,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 18:31:21,703 INFO L175 Difference]: Start difference. First operand has 285 places, 261 transitions, 2696 flow. Second operand 11 states and 133 transitions. [2024-06-21 18:31:21,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 282 transitions, 3524 flow [2024-06-21 18:31:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 282 transitions, 3453 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 18:31:22,106 INFO L231 Difference]: Finished difference. Result has 291 places, 265 transitions, 2812 flow [2024-06-21 18:31:22,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2812, PETRI_PLACES=291, PETRI_TRANSITIONS=265} [2024-06-21 18:31:22,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-21 18:31:22,107 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 265 transitions, 2812 flow [2024-06-21 18:31:22,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:22,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:22,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:22,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 18:31:22,108 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:22,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1198153872, now seen corresponding path program 3 times [2024-06-21 18:31:22,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:22,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316710578] [2024-06-21 18:31:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:22,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:23,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:23,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316710578] [2024-06-21 18:31:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316710578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:23,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:23,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050833365] [2024-06-21 18:31:23,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:23,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:23,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:23,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:23,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 265 transitions, 2812 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:23,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:23,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:23,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:24,008 INFO L124 PetriNetUnfolderBase]: 568/986 cut-off events. [2024-06-21 18:31:24,008 INFO L125 PetriNetUnfolderBase]: For 143078/143078 co-relation queries the response was YES. [2024-06-21 18:31:24,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 986 events. 568/986 cut-off events. For 143078/143078 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4608 event pairs, 106 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 8053. Up to 813 conditions per place. [2024-06-21 18:31:24,018 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 62 changer transitions 0/278 dead transitions. [2024-06-21 18:31:24,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 278 transitions, 3578 flow [2024-06-21 18:31:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:31:24,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 18:31:24,020 INFO L175 Difference]: Start difference. First operand has 291 places, 265 transitions, 2812 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:31:24,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 278 transitions, 3578 flow [2024-06-21 18:31:24,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 278 transitions, 3424 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:24,411 INFO L231 Difference]: Finished difference. Result has 293 places, 265 transitions, 2787 flow [2024-06-21 18:31:24,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2787, PETRI_PLACES=293, PETRI_TRANSITIONS=265} [2024-06-21 18:31:24,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-21 18:31:24,411 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 265 transitions, 2787 flow [2024-06-21 18:31:24,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:24,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:24,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:24,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 18:31:24,412 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:24,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1198154027, now seen corresponding path program 3 times [2024-06-21 18:31:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758671466] [2024-06-21 18:31:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:26,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:26,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758671466] [2024-06-21 18:31:26,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758671466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:26,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:26,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997576735] [2024-06-21 18:31:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:26,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:26,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:26,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:26,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:26,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:26,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 265 transitions, 2787 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:26,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:26,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:26,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:26,704 INFO L124 PetriNetUnfolderBase]: 571/991 cut-off events. [2024-06-21 18:31:26,704 INFO L125 PetriNetUnfolderBase]: For 146097/146097 co-relation queries the response was YES. [2024-06-21 18:31:26,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8279 conditions, 991 events. 571/991 cut-off events. For 146097/146097 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4626 event pairs, 107 based on Foata normal form. 1/991 useless extension candidates. Maximal degree in co-relation 8148. Up to 910 conditions per place. [2024-06-21 18:31:26,715 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 39 changer transitions 0/279 dead transitions. [2024-06-21 18:31:26,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 279 transitions, 3397 flow [2024-06-21 18:31:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 18:31:26,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 18:31:26,717 INFO L175 Difference]: Start difference. First operand has 293 places, 265 transitions, 2787 flow. Second operand 10 states and 116 transitions. [2024-06-21 18:31:26,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 279 transitions, 3397 flow [2024-06-21 18:31:27,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 279 transitions, 3261 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 18:31:27,125 INFO L231 Difference]: Finished difference. Result has 294 places, 267 transitions, 2762 flow [2024-06-21 18:31:27,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2762, PETRI_PLACES=294, PETRI_TRANSITIONS=267} [2024-06-21 18:31:27,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-21 18:31:27,126 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 267 transitions, 2762 flow [2024-06-21 18:31:27,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:27,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:27,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 18:31:27,126 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:27,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1054055735, now seen corresponding path program 2 times [2024-06-21 18:31:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:27,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645528866] [2024-06-21 18:31:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:28,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645528866] [2024-06-21 18:31:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645528866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:28,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033352828] [2024-06-21 18:31:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:28,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:28,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:28,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:28,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 267 transitions, 2762 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:28,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:28,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:28,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:29,280 INFO L124 PetriNetUnfolderBase]: 597/1033 cut-off events. [2024-06-21 18:31:29,281 INFO L125 PetriNetUnfolderBase]: For 170304/170304 co-relation queries the response was YES. [2024-06-21 18:31:29,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8835 conditions, 1033 events. 597/1033 cut-off events. For 170304/170304 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4874 event pairs, 106 based on Foata normal form. 2/1034 useless extension candidates. Maximal degree in co-relation 8703. Up to 755 conditions per place. [2024-06-21 18:31:29,291 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 227 selfloop transitions, 63 changer transitions 0/292 dead transitions. [2024-06-21 18:31:29,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 292 transitions, 4008 flow [2024-06-21 18:31:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 18:31:29,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 18:31:29,293 INFO L175 Difference]: Start difference. First operand has 294 places, 267 transitions, 2762 flow. Second operand 11 states and 137 transitions. [2024-06-21 18:31:29,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 292 transitions, 4008 flow [2024-06-21 18:31:29,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 292 transitions, 3913 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:29,764 INFO L231 Difference]: Finished difference. Result has 297 places, 273 transitions, 2858 flow [2024-06-21 18:31:29,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2858, PETRI_PLACES=297, PETRI_TRANSITIONS=273} [2024-06-21 18:31:29,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-21 18:31:29,764 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 273 transitions, 2858 flow [2024-06-21 18:31:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:29,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:29,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 18:31:29,765 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:29,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1054048295, now seen corresponding path program 3 times [2024-06-21 18:31:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608356788] [2024-06-21 18:31:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608356788] [2024-06-21 18:31:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608356788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:31,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:31,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041892884] [2024-06-21 18:31:31,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:31,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:31,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:31,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 273 transitions, 2858 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:31,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:31,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:31,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:31,730 INFO L124 PetriNetUnfolderBase]: 593/1027 cut-off events. [2024-06-21 18:31:31,730 INFO L125 PetriNetUnfolderBase]: For 165402/165402 co-relation queries the response was YES. [2024-06-21 18:31:31,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 1027 events. 593/1027 cut-off events. For 165402/165402 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4850 event pairs, 108 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 8592. Up to 752 conditions per place. [2024-06-21 18:31:31,741 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 223 selfloop transitions, 65 changer transitions 0/290 dead transitions. [2024-06-21 18:31:31,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 290 transitions, 3854 flow [2024-06-21 18:31:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:31:31,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:31:31,743 INFO L175 Difference]: Start difference. First operand has 297 places, 273 transitions, 2858 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:31:31,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 290 transitions, 3854 flow [2024-06-21 18:31:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 290 transitions, 3755 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 18:31:32,208 INFO L231 Difference]: Finished difference. Result has 301 places, 273 transitions, 2894 flow [2024-06-21 18:31:32,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2759, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2894, PETRI_PLACES=301, PETRI_TRANSITIONS=273} [2024-06-21 18:31:32,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-21 18:31:32,209 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 273 transitions, 2894 flow [2024-06-21 18:31:32,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:32,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:32,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:32,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 18:31:32,209 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:32,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1054055952, now seen corresponding path program 4 times [2024-06-21 18:31:32,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:32,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142473028] [2024-06-21 18:31:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:33,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142473028] [2024-06-21 18:31:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142473028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:33,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:33,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595209689] [2024-06-21 18:31:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:33,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:33,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:33,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:33,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 273 transitions, 2894 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:33,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:33,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:33,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:34,076 INFO L124 PetriNetUnfolderBase]: 601/1040 cut-off events. [2024-06-21 18:31:34,076 INFO L125 PetriNetUnfolderBase]: For 169095/169095 co-relation queries the response was YES. [2024-06-21 18:31:34,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8941 conditions, 1040 events. 601/1040 cut-off events. For 169095/169095 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4927 event pairs, 115 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 8807. Up to 864 conditions per place. [2024-06-21 18:31:34,088 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 62 changer transitions 0/290 dead transitions. [2024-06-21 18:31:34,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 290 transitions, 3918 flow [2024-06-21 18:31:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:31:34,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 18:31:34,089 INFO L175 Difference]: Start difference. First operand has 301 places, 273 transitions, 2894 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:31:34,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 290 transitions, 3918 flow [2024-06-21 18:31:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 290 transitions, 3791 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:34,638 INFO L231 Difference]: Finished difference. Result has 303 places, 277 transitions, 2936 flow [2024-06-21 18:31:34,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2936, PETRI_PLACES=303, PETRI_TRANSITIONS=277} [2024-06-21 18:31:34,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-21 18:31:34,639 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 277 transitions, 2936 flow [2024-06-21 18:31:34,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:34,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:34,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:34,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 18:31:34,639 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:34,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1418895506, now seen corresponding path program 5 times [2024-06-21 18:31:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:34,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230683328] [2024-06-21 18:31:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:34,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230683328] [2024-06-21 18:31:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230683328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179420784] [2024-06-21 18:31:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:36,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:36,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 277 transitions, 2936 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:36,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:36,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:36,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:36,824 INFO L124 PetriNetUnfolderBase]: 604/1045 cut-off events. [2024-06-21 18:31:36,824 INFO L125 PetriNetUnfolderBase]: For 172575/172575 co-relation queries the response was YES. [2024-06-21 18:31:36,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8977 conditions, 1045 events. 604/1045 cut-off events. For 172575/172575 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4944 event pairs, 113 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 8842. Up to 868 conditions per place. [2024-06-21 18:31:36,836 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 62 changer transitions 0/292 dead transitions. [2024-06-21 18:31:36,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 292 transitions, 3952 flow [2024-06-21 18:31:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 18:31:36,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 18:31:36,838 INFO L175 Difference]: Start difference. First operand has 303 places, 277 transitions, 2936 flow. Second operand 10 states and 124 transitions. [2024-06-21 18:31:36,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 292 transitions, 3952 flow [2024-06-21 18:31:37,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 292 transitions, 3857 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 18:31:37,443 INFO L231 Difference]: Finished difference. Result has 307 places, 279 transitions, 2994 flow [2024-06-21 18:31:37,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2994, PETRI_PLACES=307, PETRI_TRANSITIONS=279} [2024-06-21 18:31:37,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-21 18:31:37,444 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 279 transitions, 2994 flow [2024-06-21 18:31:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:37,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:37,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:37,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 18:31:37,444 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:37,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1054257762, now seen corresponding path program 6 times [2024-06-21 18:31:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:37,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199752542] [2024-06-21 18:31:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199752542] [2024-06-21 18:31:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199752542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:38,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:38,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028349465] [2024-06-21 18:31:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:39,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:39,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 279 transitions, 2994 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:39,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:39,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:39,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:39,359 INFO L124 PetriNetUnfolderBase]: 602/1042 cut-off events. [2024-06-21 18:31:39,359 INFO L125 PetriNetUnfolderBase]: For 171706/171706 co-relation queries the response was YES. [2024-06-21 18:31:39,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8914 conditions, 1042 events. 602/1042 cut-off events. For 171706/171706 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4932 event pairs, 115 based on Foata normal form. 1/1042 useless extension candidates. Maximal degree in co-relation 8778. Up to 866 conditions per place. [2024-06-21 18:31:39,371 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 61 changer transitions 0/291 dead transitions. [2024-06-21 18:31:39,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 291 transitions, 3794 flow [2024-06-21 18:31:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 18:31:39,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 18:31:39,372 INFO L175 Difference]: Start difference. First operand has 307 places, 279 transitions, 2994 flow. Second operand 10 states and 124 transitions. [2024-06-21 18:31:39,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 291 transitions, 3794 flow [2024-06-21 18:31:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 291 transitions, 3662 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:39,984 INFO L231 Difference]: Finished difference. Result has 310 places, 279 transitions, 2989 flow [2024-06-21 18:31:39,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2989, PETRI_PLACES=310, PETRI_TRANSITIONS=279} [2024-06-21 18:31:39,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 18:31:39,984 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 279 transitions, 2989 flow [2024-06-21 18:31:39,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:39,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:39,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 18:31:39,985 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:39,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1054263497, now seen corresponding path program 4 times [2024-06-21 18:31:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254973717] [2024-06-21 18:31:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254973717] [2024-06-21 18:31:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254973717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:41,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:41,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117295991] [2024-06-21 18:31:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:41,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:41,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:41,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 279 transitions, 2989 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:41,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:41,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:41,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:42,300 INFO L124 PetriNetUnfolderBase]: 605/1047 cut-off events. [2024-06-21 18:31:42,300 INFO L125 PetriNetUnfolderBase]: For 175290/175290 co-relation queries the response was YES. [2024-06-21 18:31:42,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8975 conditions, 1047 events. 605/1047 cut-off events. For 175290/175290 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4943 event pairs, 114 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 8838. Up to 966 conditions per place. [2024-06-21 18:31:42,312 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 37 changer transitions 0/292 dead transitions. [2024-06-21 18:31:42,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 292 transitions, 3625 flow [2024-06-21 18:31:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 18:31:42,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 18:31:42,313 INFO L175 Difference]: Start difference. First operand has 310 places, 279 transitions, 2989 flow. Second operand 10 states and 116 transitions. [2024-06-21 18:31:42,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 292 transitions, 3625 flow [2024-06-21 18:31:42,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 292 transitions, 3477 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:31:42,968 INFO L231 Difference]: Finished difference. Result has 310 places, 281 transitions, 2952 flow [2024-06-21 18:31:42,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2952, PETRI_PLACES=310, PETRI_TRANSITIONS=281} [2024-06-21 18:31:42,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 18:31:42,969 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 281 transitions, 2952 flow [2024-06-21 18:31:42,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:42,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:42,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:42,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 18:31:42,969 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:42,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:42,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1418889709, now seen corresponding path program 4 times [2024-06-21 18:31:42,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:42,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577793605] [2024-06-21 18:31:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:42,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:44,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577793605] [2024-06-21 18:31:44,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577793605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:44,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:44,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:44,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114951111] [2024-06-21 18:31:44,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:44,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:44,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:44,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:44,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 281 transitions, 2952 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:44,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:44,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:44,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:45,194 INFO L124 PetriNetUnfolderBase]: 601/1041 cut-off events. [2024-06-21 18:31:45,195 INFO L125 PetriNetUnfolderBase]: For 174047/174047 co-relation queries the response was YES. [2024-06-21 18:31:45,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 1041 events. 601/1041 cut-off events. For 174047/174047 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4937 event pairs, 105 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 8623. Up to 769 conditions per place. [2024-06-21 18:31:45,205 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 62 changer transitions 0/298 dead transitions. [2024-06-21 18:31:45,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 298 transitions, 3790 flow [2024-06-21 18:31:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:31:45,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 18:31:45,206 INFO L175 Difference]: Start difference. First operand has 310 places, 281 transitions, 2952 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:31:45,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 298 transitions, 3790 flow [2024-06-21 18:31:45,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 298 transitions, 3687 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:45,762 INFO L231 Difference]: Finished difference. Result has 313 places, 281 transitions, 2978 flow [2024-06-21 18:31:45,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2978, PETRI_PLACES=313, PETRI_TRANSITIONS=281} [2024-06-21 18:31:45,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-21 18:31:45,763 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 281 transitions, 2978 flow [2024-06-21 18:31:45,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:45,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:45,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 18:31:45,764 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -366676367, now seen corresponding path program 5 times [2024-06-21 18:31:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642600440] [2024-06-21 18:31:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642600440] [2024-06-21 18:31:47,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642600440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:47,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:47,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:31:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231831728] [2024-06-21 18:31:47,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:31:47,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:31:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:31:47,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:47,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 281 transitions, 2978 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:47,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:47,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:47,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:47,965 INFO L124 PetriNetUnfolderBase]: 604/1046 cut-off events. [2024-06-21 18:31:47,965 INFO L125 PetriNetUnfolderBase]: For 172897/172897 co-relation queries the response was YES. [2024-06-21 18:31:47,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8883 conditions, 1046 events. 604/1046 cut-off events. For 172897/172897 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4980 event pairs, 107 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 8744. Up to 965 conditions per place. [2024-06-21 18:31:47,976 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 36 changer transitions 0/293 dead transitions. [2024-06-21 18:31:47,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 293 transitions, 3616 flow [2024-06-21 18:31:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 18:31:47,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 18:31:47,978 INFO L175 Difference]: Start difference. First operand has 313 places, 281 transitions, 2978 flow. Second operand 11 states and 122 transitions. [2024-06-21 18:31:47,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 293 transitions, 3616 flow [2024-06-21 18:31:48,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 293 transitions, 3483 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:31:48,552 INFO L231 Difference]: Finished difference. Result has 314 places, 283 transitions, 2958 flow [2024-06-21 18:31:48,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2958, PETRI_PLACES=314, PETRI_TRANSITIONS=283} [2024-06-21 18:31:48,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-21 18:31:48,553 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 283 transitions, 2958 flow [2024-06-21 18:31:48,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:48,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:48,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:48,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 18:31:48,554 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:48,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash -359318982, now seen corresponding path program 7 times [2024-06-21 18:31:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:48,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14895110] [2024-06-21 18:31:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:49,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:49,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14895110] [2024-06-21 18:31:49,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14895110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:49,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:49,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:49,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862336263] [2024-06-21 18:31:49,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:49,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:49,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:49,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:49,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:50,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:50,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 283 transitions, 2958 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:50,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:50,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:50,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:50,488 INFO L124 PetriNetUnfolderBase]: 612/1059 cut-off events. [2024-06-21 18:31:50,488 INFO L125 PetriNetUnfolderBase]: For 181003/181003 co-relation queries the response was YES. [2024-06-21 18:31:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9035 conditions, 1059 events. 612/1059 cut-off events. For 181003/181003 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5054 event pairs, 108 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 8895. Up to 880 conditions per place. [2024-06-21 18:31:50,500 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 68 changer transitions 0/299 dead transitions. [2024-06-21 18:31:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 299 transitions, 4024 flow [2024-06-21 18:31:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:31:50,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 18:31:50,502 INFO L175 Difference]: Start difference. First operand has 314 places, 283 transitions, 2958 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:31:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 299 transitions, 4024 flow [2024-06-21 18:31:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 299 transitions, 3927 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 18:31:51,112 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 3046 flow [2024-06-21 18:31:51,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3046, PETRI_PLACES=315, PETRI_TRANSITIONS=287} [2024-06-21 18:31:51,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-21 18:31:51,113 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 3046 flow [2024-06-21 18:31:51,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:51,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:51,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:51,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 18:31:51,113 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:51,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash -366676212, now seen corresponding path program 8 times [2024-06-21 18:31:51,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:51,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315066306] [2024-06-21 18:31:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315066306] [2024-06-21 18:31:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315066306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:52,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537923199] [2024-06-21 18:31:52,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:52,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:52,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 287 transitions, 3046 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:52,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:52,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:52,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:53,328 INFO L124 PetriNetUnfolderBase]: 615/1064 cut-off events. [2024-06-21 18:31:53,328 INFO L125 PetriNetUnfolderBase]: For 184663/184663 co-relation queries the response was YES. [2024-06-21 18:31:53,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9147 conditions, 1064 events. 615/1064 cut-off events. For 184663/184663 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5082 event pairs, 108 based on Foata normal form. 1/1064 useless extension candidates. Maximal degree in co-relation 9006. Up to 884 conditions per place. [2024-06-21 18:31:53,340 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 67 changer transitions 0/301 dead transitions. [2024-06-21 18:31:53,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 301 transitions, 4102 flow [2024-06-21 18:31:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 18:31:53,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 18:31:53,342 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 3046 flow. Second operand 10 states and 124 transitions. [2024-06-21 18:31:53,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 301 transitions, 4102 flow [2024-06-21 18:31:54,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 301 transitions, 4004 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 18:31:54,025 INFO L231 Difference]: Finished difference. Result has 319 places, 289 transitions, 3113 flow [2024-06-21 18:31:54,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3113, PETRI_PLACES=319, PETRI_TRANSITIONS=289} [2024-06-21 18:31:54,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-21 18:31:54,025 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 289 transitions, 3113 flow [2024-06-21 18:31:54,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:54,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:54,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 18:31:54,026 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:54,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash -366670632, now seen corresponding path program 9 times [2024-06-21 18:31:54,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:54,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406067916] [2024-06-21 18:31:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:55,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406067916] [2024-06-21 18:31:55,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406067916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:55,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:55,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:31:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279035746] [2024-06-21 18:31:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:55,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:31:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:55,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:31:55,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:31:55,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:31:55,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 289 transitions, 3113 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:55,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:55,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:31:55,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:55,961 INFO L124 PetriNetUnfolderBase]: 618/1069 cut-off events. [2024-06-21 18:31:55,962 INFO L125 PetriNetUnfolderBase]: For 188376/188376 co-relation queries the response was YES. [2024-06-21 18:31:55,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9221 conditions, 1069 events. 618/1069 cut-off events. For 188376/188376 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5114 event pairs, 112 based on Foata normal form. 1/1069 useless extension candidates. Maximal degree in co-relation 9079. Up to 888 conditions per place. [2024-06-21 18:31:55,976 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 67 changer transitions 0/303 dead transitions. [2024-06-21 18:31:55,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 303 transitions, 4177 flow [2024-06-21 18:31:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 18:31:55,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:31:55,978 INFO L175 Difference]: Start difference. First operand has 319 places, 289 transitions, 3113 flow. Second operand 10 states and 125 transitions. [2024-06-21 18:31:55,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 303 transitions, 4177 flow [2024-06-21 18:31:56,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 303 transitions, 4040 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:56,699 INFO L231 Difference]: Finished difference. Result has 322 places, 291 transitions, 3141 flow [2024-06-21 18:31:56,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=322, PETRI_TRANSITIONS=291} [2024-06-21 18:31:56,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 18:31:56,700 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 291 transitions, 3141 flow [2024-06-21 18:31:56,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:31:56,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:56,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:56,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 18:31:56,700 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:31:56,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash 5590229, now seen corresponding path program 1 times [2024-06-21 18:31:56,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:56,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357718112] [2024-06-21 18:31:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:58,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357718112] [2024-06-21 18:31:58,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357718112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:58,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:58,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:31:58,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851489110] [2024-06-21 18:31:58,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:58,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:31:58,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:31:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:31:59,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:31:59,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 291 transitions, 3141 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:59,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:59,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:31:59,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:59,505 INFO L124 PetriNetUnfolderBase]: 572/1022 cut-off events. [2024-06-21 18:31:59,505 INFO L125 PetriNetUnfolderBase]: For 201484/201487 co-relation queries the response was YES. [2024-06-21 18:31:59,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 1022 events. 572/1022 cut-off events. For 201484/201487 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5126 event pairs, 93 based on Foata normal form. 3/1017 useless extension candidates. Maximal degree in co-relation 8842. Up to 874 conditions per place. [2024-06-21 18:31:59,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 27 changer transitions 0/304 dead transitions. [2024-06-21 18:31:59,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 304 transitions, 3725 flow [2024-06-21 18:31:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 18:31:59,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-21 18:31:59,519 INFO L175 Difference]: Start difference. First operand has 322 places, 291 transitions, 3141 flow. Second operand 10 states and 122 transitions. [2024-06-21 18:31:59,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 304 transitions, 3725 flow [2024-06-21 18:32:00,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 304 transitions, 3598 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:00,242 INFO L231 Difference]: Finished difference. Result has 325 places, 292 transitions, 3090 flow [2024-06-21 18:32:00,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3090, PETRI_PLACES=325, PETRI_TRANSITIONS=292} [2024-06-21 18:32:00,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-21 18:32:00,243 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 292 transitions, 3090 flow [2024-06-21 18:32:00,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:00,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:00,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:00,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 18:32:00,244 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:00,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash 5580309, now seen corresponding path program 5 times [2024-06-21 18:32:00,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:00,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847855256] [2024-06-21 18:32:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:00,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:02,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847855256] [2024-06-21 18:32:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847855256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:02,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:32:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527213749] [2024-06-21 18:32:02,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:02,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:32:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:32:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:32:02,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:02,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 292 transitions, 3090 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:02,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:02,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:02,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:02,875 INFO L124 PetriNetUnfolderBase]: 644/1113 cut-off events. [2024-06-21 18:32:02,876 INFO L125 PetriNetUnfolderBase]: For 211873/211873 co-relation queries the response was YES. [2024-06-21 18:32:02,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9638 conditions, 1113 events. 644/1113 cut-off events. For 211873/211873 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5388 event pairs, 118 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 9494. Up to 822 conditions per place. [2024-06-21 18:32:02,888 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 241 selfloop transitions, 71 changer transitions 0/314 dead transitions. [2024-06-21 18:32:02,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 314 transitions, 4237 flow [2024-06-21 18:32:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 18:32:02,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 18:32:02,890 INFO L175 Difference]: Start difference. First operand has 325 places, 292 transitions, 3090 flow. Second operand 11 states and 134 transitions. [2024-06-21 18:32:02,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 314 transitions, 4237 flow [2024-06-21 18:32:03,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 314 transitions, 4121 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 18:32:03,646 INFO L231 Difference]: Finished difference. Result has 327 places, 298 transitions, 3189 flow [2024-06-21 18:32:03,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3189, PETRI_PLACES=327, PETRI_TRANSITIONS=298} [2024-06-21 18:32:03,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-21 18:32:03,646 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 298 transitions, 3189 flow [2024-06-21 18:32:03,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:03,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:03,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:03,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 18:32:03,647 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:03,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash 5320839, now seen corresponding path program 6 times [2024-06-21 18:32:03,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:03,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375193416] [2024-06-21 18:32:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:03,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:05,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375193416] [2024-06-21 18:32:05,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375193416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:05,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:05,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:05,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317187612] [2024-06-21 18:32:05,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:05,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:05,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:05,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:05,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 298 transitions, 3189 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:05,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:05,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:05,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:05,589 INFO L124 PetriNetUnfolderBase]: 660/1139 cut-off events. [2024-06-21 18:32:05,589 INFO L125 PetriNetUnfolderBase]: For 227248/227248 co-relation queries the response was YES. [2024-06-21 18:32:05,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 1139 events. 660/1139 cut-off events. For 227248/227248 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5531 event pairs, 113 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 9933. Up to 837 conditions per place. [2024-06-21 18:32:05,602 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 68 changer transitions 0/320 dead transitions. [2024-06-21 18:32:05,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 320 transitions, 4557 flow [2024-06-21 18:32:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 18:32:05,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 18:32:05,603 INFO L175 Difference]: Start difference. First operand has 327 places, 298 transitions, 3189 flow. Second operand 10 states and 132 transitions. [2024-06-21 18:32:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 320 transitions, 4557 flow [2024-06-21 18:32:06,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 320 transitions, 4438 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 18:32:06,437 INFO L231 Difference]: Finished difference. Result has 331 places, 302 transitions, 3263 flow [2024-06-21 18:32:06,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3263, PETRI_PLACES=331, PETRI_TRANSITIONS=302} [2024-06-21 18:32:06,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-21 18:32:06,438 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 302 transitions, 3263 flow [2024-06-21 18:32:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:06,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:06,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 18:32:06,438 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 5313399, now seen corresponding path program 7 times [2024-06-21 18:32:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658416575] [2024-06-21 18:32:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658416575] [2024-06-21 18:32:07,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658416575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:07,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:07,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725758653] [2024-06-21 18:32:07,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:07,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:07,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:07,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:08,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:08,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 302 transitions, 3263 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:08,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:08,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:08,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:08,620 INFO L124 PetriNetUnfolderBase]: 656/1133 cut-off events. [2024-06-21 18:32:08,620 INFO L125 PetriNetUnfolderBase]: For 220619/220619 co-relation queries the response was YES. [2024-06-21 18:32:08,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 1133 events. 656/1133 cut-off events. For 220619/220619 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5513 event pairs, 112 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 9714. Up to 834 conditions per place. [2024-06-21 18:32:08,635 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 248 selfloop transitions, 69 changer transitions 0/319 dead transitions. [2024-06-21 18:32:08,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 319 transitions, 4369 flow [2024-06-21 18:32:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:32:08,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 18:32:08,637 INFO L175 Difference]: Start difference. First operand has 331 places, 302 transitions, 3263 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:32:08,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 319 transitions, 4369 flow [2024-06-21 18:32:09,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 319 transitions, 4245 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:09,362 INFO L231 Difference]: Finished difference. Result has 335 places, 302 transitions, 3282 flow [2024-06-21 18:32:09,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3282, PETRI_PLACES=335, PETRI_TRANSITIONS=302} [2024-06-21 18:32:09,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-21 18:32:09,363 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 302 transitions, 3282 flow [2024-06-21 18:32:09,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:09,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:09,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 18:32:09,363 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:09,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2038251, now seen corresponding path program 8 times [2024-06-21 18:32:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349802256] [2024-06-21 18:32:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349802256] [2024-06-21 18:32:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349802256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:10,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:10,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:10,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583282456] [2024-06-21 18:32:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:10,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:10,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:10,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:11,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:11,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 302 transitions, 3282 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:11,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:11,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:11,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:11,534 INFO L124 PetriNetUnfolderBase]: 662/1143 cut-off events. [2024-06-21 18:32:11,534 INFO L125 PetriNetUnfolderBase]: For 224967/224967 co-relation queries the response was YES. [2024-06-21 18:32:11,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9940 conditions, 1143 events. 662/1143 cut-off events. For 224967/224967 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5564 event pairs, 112 based on Foata normal form. 2/1144 useless extension candidates. Maximal degree in co-relation 9793. Up to 840 conditions per place. [2024-06-21 18:32:11,547 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 249 selfloop transitions, 70 changer transitions 0/321 dead transitions. [2024-06-21 18:32:11,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 321 transitions, 4422 flow [2024-06-21 18:32:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 18:32:11,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 18:32:11,549 INFO L175 Difference]: Start difference. First operand has 335 places, 302 transitions, 3282 flow. Second operand 11 states and 137 transitions. [2024-06-21 18:32:11,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 321 transitions, 4422 flow [2024-06-21 18:32:12,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 321 transitions, 4283 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:12,255 INFO L231 Difference]: Finished difference. Result has 337 places, 304 transitions, 3314 flow [2024-06-21 18:32:12,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3314, PETRI_PLACES=337, PETRI_TRANSITIONS=304} [2024-06-21 18:32:12,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-21 18:32:12,255 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 304 transitions, 3314 flow [2024-06-21 18:32:12,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:12,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:12,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:12,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 18:32:12,256 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:12,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1836441, now seen corresponding path program 9 times [2024-06-21 18:32:12,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:12,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937880610] [2024-06-21 18:32:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937880610] [2024-06-21 18:32:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937880610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:13,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:13,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583696463] [2024-06-21 18:32:13,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:13,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:13,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:13,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:13,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 304 transitions, 3314 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:13,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:13,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:13,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:14,456 INFO L124 PetriNetUnfolderBase]: 668/1153 cut-off events. [2024-06-21 18:32:14,457 INFO L125 PetriNetUnfolderBase]: For 229125/229125 co-relation queries the response was YES. [2024-06-21 18:32:14,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 1153 events. 668/1153 cut-off events. For 229125/229125 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5634 event pairs, 113 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 9880. Up to 846 conditions per place. [2024-06-21 18:32:14,471 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 253 selfloop transitions, 69 changer transitions 0/324 dead transitions. [2024-06-21 18:32:14,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 324 transitions, 4468 flow [2024-06-21 18:32:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:32:14,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 18:32:14,473 INFO L175 Difference]: Start difference. First operand has 337 places, 304 transitions, 3314 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:32:14,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 324 transitions, 4468 flow [2024-06-21 18:32:15,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 324 transitions, 4339 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 18:32:15,238 INFO L231 Difference]: Finished difference. Result has 340 places, 306 transitions, 3354 flow [2024-06-21 18:32:15,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3354, PETRI_PLACES=340, PETRI_TRANSITIONS=306} [2024-06-21 18:32:15,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 18:32:15,239 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 306 transitions, 3354 flow [2024-06-21 18:32:15,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:15,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:15,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 18:32:15,239 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:15,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1836658, now seen corresponding path program 10 times [2024-06-21 18:32:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850834089] [2024-06-21 18:32:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:15,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850834089] [2024-06-21 18:32:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850834089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:16,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167012318] [2024-06-21 18:32:16,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:16,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:16,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 306 transitions, 3354 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:16,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:16,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:16,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:17,160 INFO L124 PetriNetUnfolderBase]: 666/1150 cut-off events. [2024-06-21 18:32:17,160 INFO L125 PetriNetUnfolderBase]: For 221496/221496 co-relation queries the response was YES. [2024-06-21 18:32:17,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9953 conditions, 1150 events. 666/1150 cut-off events. For 221496/221496 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5596 event pairs, 119 based on Foata normal form. 1/1150 useless extension candidates. Maximal degree in co-relation 9804. Up to 970 conditions per place. [2024-06-21 18:32:17,173 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 66 changer transitions 0/317 dead transitions. [2024-06-21 18:32:17,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 317 transitions, 4228 flow [2024-06-21 18:32:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 18:32:17,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:32:17,174 INFO L175 Difference]: Start difference. First operand has 340 places, 306 transitions, 3354 flow. Second operand 10 states and 125 transitions. [2024-06-21 18:32:17,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 317 transitions, 4228 flow [2024-06-21 18:32:17,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 317 transitions, 4033 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 18:32:17,891 INFO L231 Difference]: Finished difference. Result has 340 places, 306 transitions, 3296 flow [2024-06-21 18:32:17,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3296, PETRI_PLACES=340, PETRI_TRANSITIONS=306} [2024-06-21 18:32:17,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 18:32:17,892 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 306 transitions, 3296 flow [2024-06-21 18:32:17,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:17,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:17,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:17,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 18:32:17,892 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1829001, now seen corresponding path program 10 times [2024-06-21 18:32:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660710902] [2024-06-21 18:32:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:19,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660710902] [2024-06-21 18:32:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660710902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:19,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170326991] [2024-06-21 18:32:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:19,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:19,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 306 transitions, 3296 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:19,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:19,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:19,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:19,866 INFO L124 PetriNetUnfolderBase]: 662/1144 cut-off events. [2024-06-21 18:32:19,867 INFO L125 PetriNetUnfolderBase]: For 218921/218921 co-relation queries the response was YES. [2024-06-21 18:32:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9680 conditions, 1144 events. 662/1144 cut-off events. For 218921/218921 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5587 event pairs, 113 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 9530. Up to 840 conditions per place. [2024-06-21 18:32:19,879 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 70 changer transitions 0/322 dead transitions. [2024-06-21 18:32:19,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 322 transitions, 4202 flow [2024-06-21 18:32:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 18:32:19,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 18:32:19,881 INFO L175 Difference]: Start difference. First operand has 340 places, 306 transitions, 3296 flow. Second operand 10 states and 131 transitions. [2024-06-21 18:32:19,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 322 transitions, 4202 flow [2024-06-21 18:32:20,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 322 transitions, 4004 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 18:32:20,645 INFO L231 Difference]: Finished difference. Result has 339 places, 306 transitions, 3243 flow [2024-06-21 18:32:20,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3243, PETRI_PLACES=339, PETRI_TRANSITIONS=306} [2024-06-21 18:32:20,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-21 18:32:20,646 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 306 transitions, 3243 flow [2024-06-21 18:32:20,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:20,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:20,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:20,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 18:32:20,647 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:20,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash 997338949, now seen corresponding path program 11 times [2024-06-21 18:32:20,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:20,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60751184] [2024-06-21 18:32:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:22,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:22,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60751184] [2024-06-21 18:32:22,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60751184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:22,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:22,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:22,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734536220] [2024-06-21 18:32:22,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:22,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:22,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:22,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:22,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 306 transitions, 3243 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:22,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:22,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:22,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:22,813 INFO L124 PetriNetUnfolderBase]: 678/1170 cut-off events. [2024-06-21 18:32:22,813 INFO L125 PetriNetUnfolderBase]: For 229157/229157 co-relation queries the response was YES. [2024-06-21 18:32:22,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 1170 events. 678/1170 cut-off events. For 229157/229157 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5762 event pairs, 111 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 9891. Up to 1092 conditions per place. [2024-06-21 18:32:22,828 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 35 changer transitions 0/326 dead transitions. [2024-06-21 18:32:22,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 326 transitions, 4436 flow [2024-06-21 18:32:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 18:32:22,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 18:32:22,830 INFO L175 Difference]: Start difference. First operand has 339 places, 306 transitions, 3243 flow. Second operand 10 states and 119 transitions. [2024-06-21 18:32:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 326 transitions, 4436 flow [2024-06-21 18:32:23,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 326 transitions, 4261 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:23,736 INFO L231 Difference]: Finished difference. Result has 341 places, 313 transitions, 3212 flow [2024-06-21 18:32:23,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3074, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3212, PETRI_PLACES=341, PETRI_TRANSITIONS=313} [2024-06-21 18:32:23,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-21 18:32:23,737 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 313 transitions, 3212 flow [2024-06-21 18:32:23,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:23,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:23,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:23,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 18:32:23,738 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:23,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash 384399930, now seen corresponding path program 11 times [2024-06-21 18:32:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:23,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155118689] [2024-06-21 18:32:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:25,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155118689] [2024-06-21 18:32:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155118689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:25,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:25,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:25,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67739528] [2024-06-21 18:32:25,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:25,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:25,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:25,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:25,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 313 transitions, 3212 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:25,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:25,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:25,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:25,626 INFO L124 PetriNetUnfolderBase]: 686/1183 cut-off events. [2024-06-21 18:32:25,627 INFO L125 PetriNetUnfolderBase]: For 239253/239253 co-relation queries the response was YES. [2024-06-21 18:32:25,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10234 conditions, 1183 events. 686/1183 cut-off events. For 239253/239253 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5824 event pairs, 113 based on Foata normal form. 1/1183 useless extension candidates. Maximal degree in co-relation 10081. Up to 1110 conditions per place. [2024-06-21 18:32:25,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 32 changer transitions 0/328 dead transitions. [2024-06-21 18:32:25,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 328 transitions, 4384 flow [2024-06-21 18:32:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 18:32:25,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-21 18:32:25,641 INFO L175 Difference]: Start difference. First operand has 341 places, 313 transitions, 3212 flow. Second operand 10 states and 117 transitions. [2024-06-21 18:32:25,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 328 transitions, 4384 flow [2024-06-21 18:32:26,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 328 transitions, 4348 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 18:32:26,455 INFO L231 Difference]: Finished difference. Result has 347 places, 317 transitions, 3293 flow [2024-06-21 18:32:26,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3293, PETRI_PLACES=347, PETRI_TRANSITIONS=317} [2024-06-21 18:32:26,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 18:32:26,456 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 317 transitions, 3293 flow [2024-06-21 18:32:26,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:26,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:26,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 18:32:26,457 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:26,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1756519061, now seen corresponding path program 12 times [2024-06-21 18:32:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146445884] [2024-06-21 18:32:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146445884] [2024-06-21 18:32:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146445884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:28,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:28,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282766947] [2024-06-21 18:32:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:28,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:28,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 317 transitions, 3293 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:28,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:28,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:28,667 INFO L124 PetriNetUnfolderBase]: 707/1217 cut-off events. [2024-06-21 18:32:28,668 INFO L125 PetriNetUnfolderBase]: For 269315/269315 co-relation queries the response was YES. [2024-06-21 18:32:28,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10817 conditions, 1217 events. 707/1217 cut-off events. For 269315/269315 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6007 event pairs, 119 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 10661. Up to 1045 conditions per place. [2024-06-21 18:32:28,682 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 296 selfloop transitions, 42 changer transitions 0/340 dead transitions. [2024-06-21 18:32:28,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 340 transitions, 4780 flow [2024-06-21 18:32:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 18:32:28,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 18:32:28,684 INFO L175 Difference]: Start difference. First operand has 347 places, 317 transitions, 3293 flow. Second operand 11 states and 132 transitions. [2024-06-21 18:32:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 340 transitions, 4780 flow [2024-06-21 18:32:29,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 340 transitions, 4704 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:29,521 INFO L231 Difference]: Finished difference. Result has 351 places, 323 transitions, 3385 flow [2024-06-21 18:32:29,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3385, PETRI_PLACES=351, PETRI_TRANSITIONS=323} [2024-06-21 18:32:29,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-21 18:32:29,522 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 323 transitions, 3385 flow [2024-06-21 18:32:29,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:29,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:29,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:29,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 18:32:29,522 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:29,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1756242231, now seen corresponding path program 2 times [2024-06-21 18:32:29,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:29,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440089611] [2024-06-21 18:32:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:29,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:31,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440089611] [2024-06-21 18:32:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440089611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:31,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:31,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548174565] [2024-06-21 18:32:31,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:31,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:31,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:31,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:32:31,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 323 transitions, 3385 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:32:31,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:31,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:32:31,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:31,973 INFO L124 PetriNetUnfolderBase]: 650/1155 cut-off events. [2024-06-21 18:32:31,973 INFO L125 PetriNetUnfolderBase]: For 286165/286178 co-relation queries the response was YES. [2024-06-21 18:32:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10707 conditions, 1155 events. 650/1155 cut-off events. For 286165/286178 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5982 event pairs, 94 based on Foata normal form. 3/1143 useless extension candidates. Maximal degree in co-relation 10550. Up to 1018 conditions per place. [2024-06-21 18:32:31,984 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 22 changer transitions 0/336 dead transitions. [2024-06-21 18:32:31,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 336 transitions, 4035 flow [2024-06-21 18:32:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 18:32:31,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 18:32:31,986 INFO L175 Difference]: Start difference. First operand has 351 places, 323 transitions, 3385 flow. Second operand 10 states and 119 transitions. [2024-06-21 18:32:31,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 336 transitions, 4035 flow [2024-06-21 18:32:32,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 336 transitions, 3934 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 18:32:32,938 INFO L231 Difference]: Finished difference. Result has 353 places, 324 transitions, 3352 flow [2024-06-21 18:32:32,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3352, PETRI_PLACES=353, PETRI_TRANSITIONS=324} [2024-06-21 18:32:32,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-21 18:32:32,939 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 324 transitions, 3352 flow [2024-06-21 18:32:32,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:32:32,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:32,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 18:32:32,939 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:32,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1763876508, now seen corresponding path program 12 times [2024-06-21 18:32:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363683651] [2024-06-21 18:32:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:34,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:34,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363683651] [2024-06-21 18:32:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363683651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:34,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:34,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873843932] [2024-06-21 18:32:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:34,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:34,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:34,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 324 transitions, 3352 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:34,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:34,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:34,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:34,950 INFO L124 PetriNetUnfolderBase]: 714/1230 cut-off events. [2024-06-21 18:32:34,950 INFO L125 PetriNetUnfolderBase]: For 272130/272130 co-relation queries the response was YES. [2024-06-21 18:32:34,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 1230 events. 714/1230 cut-off events. For 272130/272130 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6095 event pairs, 122 based on Foata normal form. 1/1230 useless extension candidates. Maximal degree in co-relation 10793. Up to 1156 conditions per place. [2024-06-21 18:32:34,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 40 changer transitions 0/336 dead transitions. [2024-06-21 18:32:34,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 336 transitions, 4294 flow [2024-06-21 18:32:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 18:32:34,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-21 18:32:34,968 INFO L175 Difference]: Start difference. First operand has 353 places, 324 transitions, 3352 flow. Second operand 10 states and 113 transitions. [2024-06-21 18:32:34,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 336 transitions, 4294 flow [2024-06-21 18:32:35,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 336 transitions, 4214 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:35,842 INFO L231 Difference]: Finished difference. Result has 354 places, 326 transitions, 3379 flow [2024-06-21 18:32:35,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3379, PETRI_PLACES=354, PETRI_TRANSITIONS=326} [2024-06-21 18:32:35,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-21 18:32:35,843 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 326 transitions, 3379 flow [2024-06-21 18:32:35,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:35,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:35,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 18:32:35,844 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:35,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash 384667057, now seen corresponding path program 13 times [2024-06-21 18:32:35,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:35,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175319505] [2024-06-21 18:32:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:37,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:37,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175319505] [2024-06-21 18:32:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175319505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:37,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846945550] [2024-06-21 18:32:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:37,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:37,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:37,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 326 transitions, 3379 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:37,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:37,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:37,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:38,013 INFO L124 PetriNetUnfolderBase]: 718/1237 cut-off events. [2024-06-21 18:32:38,014 INFO L125 PetriNetUnfolderBase]: For 276612/276612 co-relation queries the response was YES. [2024-06-21 18:32:38,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 1237 events. 718/1237 cut-off events. For 276612/276612 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6130 event pairs, 119 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 10755. Up to 1063 conditions per place. [2024-06-21 18:32:38,030 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 296 selfloop transitions, 47 changer transitions 0/345 dead transitions. [2024-06-21 18:32:38,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 345 transitions, 4623 flow [2024-06-21 18:32:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 18:32:38,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 18:32:38,031 INFO L175 Difference]: Start difference. First operand has 354 places, 326 transitions, 3379 flow. Second operand 11 states and 129 transitions. [2024-06-21 18:32:38,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 345 transitions, 4623 flow [2024-06-21 18:32:38,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 345 transitions, 4458 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:38,930 INFO L231 Difference]: Finished difference. Result has 357 places, 330 transitions, 3364 flow [2024-06-21 18:32:38,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3364, PETRI_PLACES=357, PETRI_TRANSITIONS=330} [2024-06-21 18:32:38,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 18:32:38,931 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 330 transitions, 3364 flow [2024-06-21 18:32:38,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:38,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:38,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:38,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 18:32:38,932 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:38,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:38,932 INFO L85 PathProgramCache]: Analyzing trace with hash 377042545, now seen corresponding path program 6 times [2024-06-21 18:32:38,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:38,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055360073] [2024-06-21 18:32:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:38,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055360073] [2024-06-21 18:32:40,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055360073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:40,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:40,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:32:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285729244] [2024-06-21 18:32:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:40,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:32:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:32:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:32:40,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:40,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 330 transitions, 3364 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:40,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:40,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:40,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:41,252 INFO L124 PetriNetUnfolderBase]: 721/1242 cut-off events. [2024-06-21 18:32:41,252 INFO L125 PetriNetUnfolderBase]: For 274573/274573 co-relation queries the response was YES. [2024-06-21 18:32:41,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11001 conditions, 1242 events. 721/1242 cut-off events. For 274573/274573 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6184 event pairs, 126 based on Foata normal form. 1/1242 useless extension candidates. Maximal degree in co-relation 10841. Up to 1211 conditions per place. [2024-06-21 18:32:41,265 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 321 selfloop transitions, 18 changer transitions 0/341 dead transitions. [2024-06-21 18:32:41,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 341 transitions, 4098 flow [2024-06-21 18:32:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 18:32:41,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 18:32:41,267 INFO L175 Difference]: Start difference. First operand has 357 places, 330 transitions, 3364 flow. Second operand 11 states and 113 transitions. [2024-06-21 18:32:41,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 341 transitions, 4098 flow [2024-06-21 18:32:42,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 341 transitions, 4010 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:42,211 INFO L231 Difference]: Finished difference. Result has 361 places, 332 transitions, 3357 flow [2024-06-21 18:32:42,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3357, PETRI_PLACES=361, PETRI_TRANSITIONS=332} [2024-06-21 18:32:42,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-21 18:32:42,212 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 332 transitions, 3357 flow [2024-06-21 18:32:42,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:42,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:42,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:42,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 18:32:42,213 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:42,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash 377257747, now seen corresponding path program 14 times [2024-06-21 18:32:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:42,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722800408] [2024-06-21 18:32:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:42,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:43,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:43,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722800408] [2024-06-21 18:32:43,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722800408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:43,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:43,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282279924] [2024-06-21 18:32:43,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:43,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:44,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:44,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 332 transitions, 3357 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:44,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:44,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:44,491 INFO L124 PetriNetUnfolderBase]: 724/1247 cut-off events. [2024-06-21 18:32:44,492 INFO L125 PetriNetUnfolderBase]: For 279179/279179 co-relation queries the response was YES. [2024-06-21 18:32:44,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11004 conditions, 1247 events. 724/1247 cut-off events. For 279179/279179 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6221 event pairs, 118 based on Foata normal form. 1/1247 useless extension candidates. Maximal degree in co-relation 10843. Up to 1167 conditions per place. [2024-06-21 18:32:44,504 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 38 changer transitions 0/351 dead transitions. [2024-06-21 18:32:44,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 351 transitions, 4614 flow [2024-06-21 18:32:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 18:32:44,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 18:32:44,505 INFO L175 Difference]: Start difference. First operand has 361 places, 332 transitions, 3357 flow. Second operand 10 states and 118 transitions. [2024-06-21 18:32:44,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 351 transitions, 4614 flow [2024-06-21 18:32:45,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 351 transitions, 4549 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:45,569 INFO L231 Difference]: Finished difference. Result has 364 places, 339 transitions, 3452 flow [2024-06-21 18:32:45,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3452, PETRI_PLACES=364, PETRI_TRANSITIONS=339} [2024-06-21 18:32:45,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 18:32:45,570 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 339 transitions, 3452 flow [2024-06-21 18:32:45,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:45,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:45,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:45,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 18:32:45,570 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:45,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1763669118, now seen corresponding path program 13 times [2024-06-21 18:32:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854572833] [2024-06-21 18:32:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:46,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854572833] [2024-06-21 18:32:46,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854572833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:46,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:46,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945231183] [2024-06-21 18:32:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:46,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:46,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:46,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 339 transitions, 3452 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:46,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:46,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:46,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:47,428 INFO L124 PetriNetUnfolderBase]: 727/1252 cut-off events. [2024-06-21 18:32:47,428 INFO L125 PetriNetUnfolderBase]: For 283830/283830 co-relation queries the response was YES. [2024-06-21 18:32:47,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11191 conditions, 1252 events. 727/1252 cut-off events. For 283830/283830 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6254 event pairs, 118 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 11027. Up to 1177 conditions per place. [2024-06-21 18:32:47,445 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 313 selfloop transitions, 37 changer transitions 0/352 dead transitions. [2024-06-21 18:32:47,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 352 transitions, 4670 flow [2024-06-21 18:32:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 18:32:47,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 18:32:47,446 INFO L175 Difference]: Start difference. First operand has 364 places, 339 transitions, 3452 flow. Second operand 10 states and 116 transitions. [2024-06-21 18:32:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 352 transitions, 4670 flow [2024-06-21 18:32:48,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 352 transitions, 4636 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 18:32:48,375 INFO L231 Difference]: Finished difference. Result has 370 places, 341 transitions, 3515 flow [2024-06-21 18:32:48,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3515, PETRI_PLACES=370, PETRI_TRANSITIONS=341} [2024-06-21 18:32:48,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-21 18:32:48,376 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 341 transitions, 3515 flow [2024-06-21 18:32:48,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:48,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:48,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:48,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 18:32:48,377 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:48,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash 377250307, now seen corresponding path program 15 times [2024-06-21 18:32:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:48,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182077507] [2024-06-21 18:32:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:49,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182077507] [2024-06-21 18:32:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182077507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614763827] [2024-06-21 18:32:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:49,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:49,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:49,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 341 transitions, 3515 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:49,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:49,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:49,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:50,510 INFO L124 PetriNetUnfolderBase]: 738/1270 cut-off events. [2024-06-21 18:32:50,511 INFO L125 PetriNetUnfolderBase]: For 303382/303382 co-relation queries the response was YES. [2024-06-21 18:32:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 1270 events. 738/1270 cut-off events. For 303382/303382 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6356 event pairs, 113 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 11322. Up to 1087 conditions per place. [2024-06-21 18:32:50,529 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 56 changer transitions 0/361 dead transitions. [2024-06-21 18:32:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 361 transitions, 5062 flow [2024-06-21 18:32:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 18:32:50,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 18:32:50,531 INFO L175 Difference]: Start difference. First operand has 370 places, 341 transitions, 3515 flow. Second operand 11 states and 131 transitions. [2024-06-21 18:32:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 361 transitions, 5062 flow [2024-06-21 18:32:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 361 transitions, 4993 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:51,413 INFO L231 Difference]: Finished difference. Result has 374 places, 346 transitions, 3626 flow [2024-06-21 18:32:51,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3626, PETRI_PLACES=374, PETRI_TRANSITIONS=346} [2024-06-21 18:32:51,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-21 18:32:51,413 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 346 transitions, 3626 flow [2024-06-21 18:32:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:51,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:51,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 18:32:51,414 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:51,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -393429485, now seen corresponding path program 16 times [2024-06-21 18:32:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766368201] [2024-06-21 18:32:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766368201] [2024-06-21 18:32:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766368201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:52,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:52,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627110697] [2024-06-21 18:32:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:52,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:52,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:53,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:53,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 346 transitions, 3626 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:53,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:53,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:53,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:53,565 INFO L124 PetriNetUnfolderBase]: 734/1264 cut-off events. [2024-06-21 18:32:53,565 INFO L125 PetriNetUnfolderBase]: For 294092/294092 co-relation queries the response was YES. [2024-06-21 18:32:53,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11316 conditions, 1264 events. 734/1264 cut-off events. For 294092/294092 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6330 event pairs, 112 based on Foata normal form. 2/1265 useless extension candidates. Maximal degree in co-relation 11149. Up to 1084 conditions per place. [2024-06-21 18:32:53,582 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 63 changer transitions 0/363 dead transitions. [2024-06-21 18:32:53,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 363 transitions, 4657 flow [2024-06-21 18:32:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 18:32:53,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 18:32:53,583 INFO L175 Difference]: Start difference. First operand has 374 places, 346 transitions, 3626 flow. Second operand 11 states and 126 transitions. [2024-06-21 18:32:53,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 363 transitions, 4657 flow [2024-06-21 18:32:54,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 363 transitions, 4495 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 18:32:54,418 INFO L231 Difference]: Finished difference. Result has 377 places, 346 transitions, 3596 flow [2024-06-21 18:32:54,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3596, PETRI_PLACES=377, PETRI_TRANSITIONS=346} [2024-06-21 18:32:54,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 18:32:54,419 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 346 transitions, 3596 flow [2024-06-21 18:32:54,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:54,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:54,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:54,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 18:32:54,419 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:54,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -393429702, now seen corresponding path program 14 times [2024-06-21 18:32:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077245757] [2024-06-21 18:32:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:55,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:55,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077245757] [2024-06-21 18:32:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077245757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:55,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:55,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:55,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559385632] [2024-06-21 18:32:55,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:55,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:55,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:55,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:55,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:55,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:55,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 346 transitions, 3596 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:55,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:55,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:55,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:56,208 INFO L124 PetriNetUnfolderBase]: 732/1261 cut-off events. [2024-06-21 18:32:56,208 INFO L125 PetriNetUnfolderBase]: For 283780/283780 co-relation queries the response was YES. [2024-06-21 18:32:56,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11224 conditions, 1261 events. 732/1261 cut-off events. For 283780/283780 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6305 event pairs, 117 based on Foata normal form. 1/1261 useless extension candidates. Maximal degree in co-relation 11056. Up to 1187 conditions per place. [2024-06-21 18:32:56,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 315 selfloop transitions, 39 changer transitions 0/356 dead transitions. [2024-06-21 18:32:56,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 356 transitions, 4570 flow [2024-06-21 18:32:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 18:32:56,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 18:32:56,226 INFO L175 Difference]: Start difference. First operand has 377 places, 346 transitions, 3596 flow. Second operand 10 states and 114 transitions. [2024-06-21 18:32:56,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 356 transitions, 4570 flow [2024-06-21 18:32:57,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 356 transitions, 4370 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 18:32:57,124 INFO L231 Difference]: Finished difference. Result has 377 places, 346 transitions, 3479 flow [2024-06-21 18:32:57,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3479, PETRI_PLACES=377, PETRI_TRANSITIONS=346} [2024-06-21 18:32:57,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 18:32:57,125 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 346 transitions, 3479 flow [2024-06-21 18:32:57,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:57,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:57,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:57,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 18:32:57,125 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:57,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash 632561308, now seen corresponding path program 15 times [2024-06-21 18:32:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2518727] [2024-06-21 18:32:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:58,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2518727] [2024-06-21 18:32:58,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2518727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:58,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113076160] [2024-06-21 18:32:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:58,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:58,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:58,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:32:58,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 346 transitions, 3479 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:58,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:58,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:32:58,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:58,824 INFO L124 PetriNetUnfolderBase]: 730/1258 cut-off events. [2024-06-21 18:32:58,825 INFO L125 PetriNetUnfolderBase]: For 280259/280259 co-relation queries the response was YES. [2024-06-21 18:32:58,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11008 conditions, 1258 events. 730/1258 cut-off events. For 280259/280259 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6296 event pairs, 116 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 10839. Up to 1227 conditions per place. [2024-06-21 18:32:58,841 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 18 changer transitions 0/355 dead transitions. [2024-06-21 18:32:58,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 355 transitions, 4205 flow [2024-06-21 18:32:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 18:32:58,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 18:32:58,843 INFO L175 Difference]: Start difference. First operand has 377 places, 346 transitions, 3479 flow. Second operand 10 states and 107 transitions. [2024-06-21 18:32:58,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 355 transitions, 4205 flow [2024-06-21 18:32:59,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 355 transitions, 4128 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 18:32:59,726 INFO L231 Difference]: Finished difference. Result has 379 places, 346 transitions, 3443 flow [2024-06-21 18:32:59,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3443, PETRI_PLACES=379, PETRI_TRANSITIONS=346} [2024-06-21 18:32:59,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-21 18:32:59,727 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 346 transitions, 3443 flow [2024-06-21 18:32:59,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:32:59,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:59,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 18:32:59,727 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:32:59,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash 957579475, now seen corresponding path program 3 times [2024-06-21 18:32:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:59,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268753376] [2024-06-21 18:32:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:59,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268753376] [2024-06-21 18:33:01,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268753376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:01,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:01,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465973700] [2024-06-21 18:33:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:01,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:01,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:33:01,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 346 transitions, 3443 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:33:01,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:01,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:33:01,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:01,853 INFO L124 PetriNetUnfolderBase]: 672/1195 cut-off events. [2024-06-21 18:33:01,854 INFO L125 PetriNetUnfolderBase]: For 306329/306342 co-relation queries the response was YES. [2024-06-21 18:33:01,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10824 conditions, 1195 events. 672/1195 cut-off events. For 306329/306342 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6250 event pairs, 96 based on Foata normal form. 3/1183 useless extension candidates. Maximal degree in co-relation 10654. Up to 1067 conditions per place. [2024-06-21 18:33:01,869 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 297 selfloop transitions, 19 changer transitions 0/356 dead transitions. [2024-06-21 18:33:01,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 356 transitions, 4115 flow [2024-06-21 18:33:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 18:33:01,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 18:33:01,871 INFO L175 Difference]: Start difference. First operand has 379 places, 346 transitions, 3443 flow. Second operand 10 states and 115 transitions. [2024-06-21 18:33:01,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 356 transitions, 4115 flow [2024-06-21 18:33:02,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 356 transitions, 4022 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 18:33:02,729 INFO L231 Difference]: Finished difference. Result has 377 places, 347 transitions, 3415 flow [2024-06-21 18:33:02,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3415, PETRI_PLACES=377, PETRI_TRANSITIONS=347} [2024-06-21 18:33:02,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 18:33:02,729 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 347 transitions, 3415 flow [2024-06-21 18:33:02,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:33:02,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:02,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 18:33:02,730 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:02,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:02,730 INFO L85 PathProgramCache]: Analyzing trace with hash 632568965, now seen corresponding path program 17 times [2024-06-21 18:33:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581172875] [2024-06-21 18:33:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581172875] [2024-06-21 18:33:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581172875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:04,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494807732] [2024-06-21 18:33:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:04,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:04,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:04,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:04,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 347 transitions, 3415 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:04,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:04,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:04,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:04,774 INFO L124 PetriNetUnfolderBase]: 756/1302 cut-off events. [2024-06-21 18:33:04,774 INFO L125 PetriNetUnfolderBase]: For 313079/313079 co-relation queries the response was YES. [2024-06-21 18:33:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11514 conditions, 1302 events. 756/1302 cut-off events. For 313079/313079 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6564 event pairs, 117 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 11343. Up to 1200 conditions per place. [2024-06-21 18:33:04,791 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 335 selfloop transitions, 31 changer transitions 0/368 dead transitions. [2024-06-21 18:33:04,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 368 transitions, 4775 flow [2024-06-21 18:33:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 18:33:04,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 18:33:04,792 INFO L175 Difference]: Start difference. First operand has 377 places, 347 transitions, 3415 flow. Second operand 10 states and 118 transitions. [2024-06-21 18:33:04,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 368 transitions, 4775 flow [2024-06-21 18:33:05,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 368 transitions, 4722 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 18:33:05,771 INFO L231 Difference]: Finished difference. Result has 380 places, 353 transitions, 3509 flow [2024-06-21 18:33:05,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3509, PETRI_PLACES=380, PETRI_TRANSITIONS=353} [2024-06-21 18:33:05,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-21 18:33:05,772 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 353 transitions, 3509 flow [2024-06-21 18:33:05,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:05,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:05,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 18:33:05,772 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 632561525, now seen corresponding path program 18 times [2024-06-21 18:33:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376130314] [2024-06-21 18:33:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376130314] [2024-06-21 18:33:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376130314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149935872] [2024-06-21 18:33:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:07,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:07,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:07,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:07,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 353 transitions, 3509 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:07,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:07,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:07,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:08,043 INFO L124 PetriNetUnfolderBase]: 752/1296 cut-off events. [2024-06-21 18:33:08,044 INFO L125 PetriNetUnfolderBase]: For 302269/302269 co-relation queries the response was YES. [2024-06-21 18:33:08,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 1296 events. 752/1296 cut-off events. For 302269/302269 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6542 event pairs, 118 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 11127. Up to 1197 conditions per place. [2024-06-21 18:33:08,061 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 333 selfloop transitions, 33 changer transitions 0/368 dead transitions. [2024-06-21 18:33:08,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 368 transitions, 4553 flow [2024-06-21 18:33:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 18:33:08,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 18:33:08,063 INFO L175 Difference]: Start difference. First operand has 380 places, 353 transitions, 3509 flow. Second operand 11 states and 122 transitions. [2024-06-21 18:33:08,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 368 transitions, 4553 flow [2024-06-21 18:33:09,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 368 transitions, 4433 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 18:33:09,027 INFO L231 Difference]: Finished difference. Result has 384 places, 353 transitions, 3460 flow [2024-06-21 18:33:09,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3460, PETRI_PLACES=384, PETRI_TRANSITIONS=353} [2024-06-21 18:33:09,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-21 18:33:09,027 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 353 transitions, 3460 flow [2024-06-21 18:33:09,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:09,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:09,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:09,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 18:33:09,029 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 957965425, now seen corresponding path program 4 times [2024-06-21 18:33:09,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:09,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183888172] [2024-06-21 18:33:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:10,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183888172] [2024-06-21 18:33:10,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183888172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006150575] [2024-06-21 18:33:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:10,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:10,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:33:10,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 353 transitions, 3460 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:33:10,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:10,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:33:10,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:11,309 INFO L124 PetriNetUnfolderBase]: 690/1227 cut-off events. [2024-06-21 18:33:11,309 INFO L125 PetriNetUnfolderBase]: For 320923/320942 co-relation queries the response was YES. [2024-06-21 18:33:11,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11097 conditions, 1227 events. 690/1227 cut-off events. For 320923/320942 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6438 event pairs, 98 based on Foata normal form. 3/1215 useless extension candidates. Maximal degree in co-relation 10922. Up to 1100 conditions per place. [2024-06-21 18:33:11,326 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 308 selfloop transitions, 15 changer transitions 0/364 dead transitions. [2024-06-21 18:33:11,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 364 transitions, 4150 flow [2024-06-21 18:33:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:11,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 18:33:11,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-21 18:33:11,330 INFO L175 Difference]: Start difference. First operand has 384 places, 353 transitions, 3460 flow. Second operand 10 states and 113 transitions. [2024-06-21 18:33:11,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 364 transitions, 4150 flow [2024-06-21 18:33:12,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 364 transitions, 4039 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:33:12,301 INFO L231 Difference]: Finished difference. Result has 384 places, 354 transitions, 3407 flow [2024-06-21 18:33:12,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3349, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3407, PETRI_PLACES=384, PETRI_TRANSITIONS=354} [2024-06-21 18:33:12,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-21 18:33:12,314 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 354 transitions, 3407 flow [2024-06-21 18:33:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:33:12,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:12,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:12,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 18:33:12,316 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:12,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash 946527665, now seen corresponding path program 19 times [2024-06-21 18:33:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771907639] [2024-06-21 18:33:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:12,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:13,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:13,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771907639] [2024-06-21 18:33:13,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771907639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:13,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:13,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352287570] [2024-06-21 18:33:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:13,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:14,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:14,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 354 transitions, 3407 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:14,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:14,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:14,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:14,582 INFO L124 PetriNetUnfolderBase]: 760/1311 cut-off events. [2024-06-21 18:33:14,582 INFO L125 PetriNetUnfolderBase]: For 311523/311523 co-relation queries the response was YES. [2024-06-21 18:33:14,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 1311 events. 760/1311 cut-off events. For 311523/311523 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6627 event pairs, 127 based on Foata normal form. 3/1313 useless extension candidates. Maximal degree in co-relation 11068. Up to 1255 conditions per place. [2024-06-21 18:33:14,599 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 339 selfloop transitions, 27 changer transitions 0/368 dead transitions. [2024-06-21 18:33:14,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 368 transitions, 4211 flow [2024-06-21 18:33:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 18:33:14,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 18:33:14,601 INFO L175 Difference]: Start difference. First operand has 384 places, 354 transitions, 3407 flow. Second operand 11 states and 117 transitions. [2024-06-21 18:33:14,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 368 transitions, 4211 flow [2024-06-21 18:33:15,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 368 transitions, 4163 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 18:33:15,638 INFO L231 Difference]: Finished difference. Result has 387 places, 358 transitions, 3476 flow [2024-06-21 18:33:15,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3476, PETRI_PLACES=387, PETRI_TRANSITIONS=358} [2024-06-21 18:33:15,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 18:33:15,639 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 358 transitions, 3476 flow [2024-06-21 18:33:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:15,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:15,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 18:33:15,639 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:15,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 632838355, now seen corresponding path program 5 times [2024-06-21 18:33:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:15,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812459226] [2024-06-21 18:33:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812459226] [2024-06-21 18:33:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812459226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:17,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:17,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:17,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335264735] [2024-06-21 18:33:17,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:17,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:17,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:17,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:33:17,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 358 transitions, 3476 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:17,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:17,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:33:17,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:18,070 INFO L124 PetriNetUnfolderBase]: 694/1236 cut-off events. [2024-06-21 18:33:18,070 INFO L125 PetriNetUnfolderBase]: For 314010/314029 co-relation queries the response was YES. [2024-06-21 18:33:18,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10952 conditions, 1236 events. 694/1236 cut-off events. For 314010/314029 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6517 event pairs, 102 based on Foata normal form. 3/1222 useless extension candidates. Maximal degree in co-relation 10776. Up to 1105 conditions per place. [2024-06-21 18:33:18,084 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 309 selfloop transitions, 19 changer transitions 0/369 dead transitions. [2024-06-21 18:33:18,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 369 transitions, 4184 flow [2024-06-21 18:33:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 18:33:18,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-21 18:33:18,085 INFO L175 Difference]: Start difference. First operand has 387 places, 358 transitions, 3476 flow. Second operand 10 states and 117 transitions. [2024-06-21 18:33:18,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 369 transitions, 4184 flow [2024-06-21 18:33:18,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 369 transitions, 4109 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 18:33:18,928 INFO L231 Difference]: Finished difference. Result has 388 places, 359 transitions, 3469 flow [2024-06-21 18:33:18,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3469, PETRI_PLACES=388, PETRI_TRANSITIONS=359} [2024-06-21 18:33:18,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-21 18:33:18,929 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 359 transitions, 3469 flow [2024-06-21 18:33:18,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:18,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:18,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:18,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 18:33:18,929 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:18,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:18,930 INFO L85 PathProgramCache]: Analyzing trace with hash 632828435, now seen corresponding path program 20 times [2024-06-21 18:33:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:18,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928954396] [2024-06-21 18:33:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:20,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928954396] [2024-06-21 18:33:20,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928954396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:20,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:20,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833561879] [2024-06-21 18:33:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:20,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:20,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 359 transitions, 3469 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:20,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:20,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:20,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:21,540 INFO L124 PetriNetUnfolderBase]: 760/1313 cut-off events. [2024-06-21 18:33:21,541 INFO L125 PetriNetUnfolderBase]: For 295771/295771 co-relation queries the response was YES. [2024-06-21 18:33:21,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 1313 events. 760/1313 cut-off events. For 295771/295771 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6645 event pairs, 126 based on Foata normal form. 2/1314 useless extension candidates. Maximal degree in co-relation 10915. Up to 1218 conditions per place. [2024-06-21 18:33:21,557 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 338 selfloop transitions, 31 changer transitions 0/371 dead transitions. [2024-06-21 18:33:21,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 371 transitions, 4251 flow [2024-06-21 18:33:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 18:33:21,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 18:33:21,559 INFO L175 Difference]: Start difference. First operand has 388 places, 359 transitions, 3469 flow. Second operand 11 states and 123 transitions. [2024-06-21 18:33:21,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 371 transitions, 4251 flow [2024-06-21 18:33:22,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 371 transitions, 4166 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 18:33:22,517 INFO L231 Difference]: Finished difference. Result has 390 places, 359 transitions, 3451 flow [2024-06-21 18:33:22,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3451, PETRI_PLACES=390, PETRI_TRANSITIONS=359} [2024-06-21 18:33:22,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-21 18:33:22,518 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 359 transitions, 3451 flow [2024-06-21 18:33:22,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:22,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:22,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:22,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 18:33:22,518 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:22,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -735497351, now seen corresponding path program 7 times [2024-06-21 18:33:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:22,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380512406] [2024-06-21 18:33:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:22,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380512406] [2024-06-21 18:33:23,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380512406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:23,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:23,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167471125] [2024-06-21 18:33:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:23,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:23,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:23,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 359 transitions, 3451 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:23,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:23,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:24,211 INFO L124 PetriNetUnfolderBase]: 772/1334 cut-off events. [2024-06-21 18:33:24,212 INFO L125 PetriNetUnfolderBase]: For 300303/300303 co-relation queries the response was YES. [2024-06-21 18:33:24,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11362 conditions, 1334 events. 772/1334 cut-off events. For 300303/300303 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6794 event pairs, 79 based on Foata normal form. 1/1334 useless extension candidates. Maximal degree in co-relation 11185. Up to 1185 conditions per place. [2024-06-21 18:33:24,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 330 selfloop transitions, 54 changer transitions 0/386 dead transitions. [2024-06-21 18:33:24,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 386 transitions, 4639 flow [2024-06-21 18:33:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 18:33:24,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 18:33:24,231 INFO L175 Difference]: Start difference. First operand has 390 places, 359 transitions, 3451 flow. Second operand 11 states and 133 transitions. [2024-06-21 18:33:24,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 386 transitions, 4639 flow [2024-06-21 18:33:25,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 386 transitions, 4578 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:33:25,184 INFO L231 Difference]: Finished difference. Result has 394 places, 366 transitions, 3634 flow [2024-06-21 18:33:25,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3634, PETRI_PLACES=394, PETRI_TRANSITIONS=366} [2024-06-21 18:33:25,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-21 18:33:25,185 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 366 transitions, 3634 flow [2024-06-21 18:33:25,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:25,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:25,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 18:33:25,185 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:25,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:25,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2089082614, now seen corresponding path program 16 times [2024-06-21 18:33:25,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:25,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116424132] [2024-06-21 18:33:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116424132] [2024-06-21 18:33:26,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116424132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465021399] [2024-06-21 18:33:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:26,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:26,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 366 transitions, 3634 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:26,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:26,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:26,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:27,301 INFO L124 PetriNetUnfolderBase]: 780/1346 cut-off events. [2024-06-21 18:33:27,302 INFO L125 PetriNetUnfolderBase]: For 313767/313767 co-relation queries the response was YES. [2024-06-21 18:33:27,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11692 conditions, 1346 events. 780/1346 cut-off events. For 313767/313767 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6872 event pairs, 82 based on Foata normal form. 1/1346 useless extension candidates. Maximal degree in co-relation 11514. Up to 1230 conditions per place. [2024-06-21 18:33:27,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 339 selfloop transitions, 50 changer transitions 0/391 dead transitions. [2024-06-21 18:33:27,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 391 transitions, 4774 flow [2024-06-21 18:33:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:33:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:33:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 18:33:27,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 18:33:27,317 INFO L175 Difference]: Start difference. First operand has 394 places, 366 transitions, 3634 flow. Second operand 12 states and 139 transitions. [2024-06-21 18:33:27,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 391 transitions, 4774 flow [2024-06-21 18:33:28,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 391 transitions, 4673 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 18:33:28,348 INFO L231 Difference]: Finished difference. Result has 400 places, 370 transitions, 3688 flow [2024-06-21 18:33:28,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3535, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3688, PETRI_PLACES=400, PETRI_TRANSITIONS=370} [2024-06-21 18:33:28,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-21 18:33:28,348 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 370 transitions, 3688 flow [2024-06-21 18:33:28,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:28,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:28,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:28,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 18:33:28,349 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:28,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2092480059, now seen corresponding path program 8 times [2024-06-21 18:33:28,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:28,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646040358] [2024-06-21 18:33:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:28,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646040358] [2024-06-21 18:33:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646040358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:30,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623244899] [2024-06-21 18:33:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:30,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:30,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:33:30,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 370 transitions, 3688 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:33:30,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:30,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:33:30,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:30,793 INFO L124 PetriNetUnfolderBase]: 783/1351 cut-off events. [2024-06-21 18:33:30,793 INFO L125 PetriNetUnfolderBase]: For 313670/313670 co-relation queries the response was YES. [2024-06-21 18:33:30,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11771 conditions, 1351 events. 783/1351 cut-off events. For 313670/313670 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6904 event pairs, 80 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 11592. Up to 1202 conditions per place. [2024-06-21 18:33:30,812 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 328 selfloop transitions, 63 changer transitions 0/393 dead transitions. [2024-06-21 18:33:30,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 393 transitions, 4826 flow [2024-06-21 18:33:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:33:30,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:33:30,813 INFO L175 Difference]: Start difference. First operand has 400 places, 370 transitions, 3688 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:33:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 393 transitions, 4826 flow [2024-06-21 18:33:31,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 393 transitions, 4747 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 18:33:31,858 INFO L231 Difference]: Finished difference. Result has 403 places, 372 transitions, 3784 flow [2024-06-21 18:33:31,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3784, PETRI_PLACES=403, PETRI_TRANSITIONS=372} [2024-06-21 18:33:31,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-21 18:33:31,859 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 372 transitions, 3784 flow [2024-06-21 18:33:31,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:33:31,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:31,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:31,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 18:33:31,860 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:31,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2107583259, now seen corresponding path program 9 times [2024-06-21 18:33:31,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408645275] [2024-06-21 18:33:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:31,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408645275] [2024-06-21 18:33:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408645275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:33,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:33,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:33:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940055026] [2024-06-21 18:33:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:33,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:33:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:33:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:33:33,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:33:33,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 372 transitions, 3784 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:33,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:33,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:33:33,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:34,274 INFO L124 PetriNetUnfolderBase]: 781/1348 cut-off events. [2024-06-21 18:33:34,274 INFO L125 PetriNetUnfolderBase]: For 309490/309490 co-relation queries the response was YES. [2024-06-21 18:33:34,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11741 conditions, 1348 events. 781/1348 cut-off events. For 309490/309490 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6900 event pairs, 82 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 11560. Up to 1234 conditions per place. [2024-06-21 18:33:34,294 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 336 selfloop transitions, 51 changer transitions 0/389 dead transitions. [2024-06-21 18:33:34,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 389 transitions, 4602 flow [2024-06-21 18:33:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:33:34,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:33:34,295 INFO L175 Difference]: Start difference. First operand has 403 places, 372 transitions, 3784 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:33:34,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 389 transitions, 4602 flow [2024-06-21 18:33:35,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 389 transitions, 4447 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 18:33:35,462 INFO L231 Difference]: Finished difference. Result has 404 places, 372 transitions, 3742 flow [2024-06-21 18:33:35,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3742, PETRI_PLACES=404, PETRI_TRANSITIONS=372} [2024-06-21 18:33:35,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-21 18:33:35,463 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 372 transitions, 3742 flow [2024-06-21 18:33:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:35,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:35,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 18:33:35,463 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:35,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 637610132, now seen corresponding path program 17 times [2024-06-21 18:33:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94238441] [2024-06-21 18:33:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:37,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:37,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94238441] [2024-06-21 18:33:37,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94238441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:37,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:37,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:37,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797474074] [2024-06-21 18:33:37,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:37,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:37,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:37,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:37,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:37,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 372 transitions, 3742 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:37,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:37,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:37,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:37,908 INFO L124 PetriNetUnfolderBase]: 784/1353 cut-off events. [2024-06-21 18:33:37,909 INFO L125 PetriNetUnfolderBase]: For 309486/309486 co-relation queries the response was YES. [2024-06-21 18:33:37,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11723 conditions, 1353 events. 784/1353 cut-off events. For 309486/309486 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6942 event pairs, 85 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 11542. Up to 1260 conditions per place. [2024-06-21 18:33:37,927 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 351 selfloop transitions, 39 changer transitions 0/392 dead transitions. [2024-06-21 18:33:37,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 392 transitions, 4592 flow [2024-06-21 18:33:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 18:33:37,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 18:33:37,928 INFO L175 Difference]: Start difference. First operand has 404 places, 372 transitions, 3742 flow. Second operand 11 states and 128 transitions. [2024-06-21 18:33:37,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 392 transitions, 4592 flow [2024-06-21 18:33:39,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 392 transitions, 4473 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:33:39,126 INFO L231 Difference]: Finished difference. Result has 405 places, 374 transitions, 3732 flow [2024-06-21 18:33:39,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3732, PETRI_PLACES=405, PETRI_TRANSITIONS=374} [2024-06-21 18:33:39,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-21 18:33:39,127 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 374 transitions, 3732 flow [2024-06-21 18:33:39,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:39,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:39,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:39,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 18:33:39,128 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:39,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash 641597042, now seen corresponding path program 18 times [2024-06-21 18:33:39,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631519074] [2024-06-21 18:33:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631519074] [2024-06-21 18:33:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631519074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:40,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:40,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587722883] [2024-06-21 18:33:40,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:40,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:40,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:40,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:40,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 374 transitions, 3732 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:40,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:40,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:40,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:41,606 INFO L124 PetriNetUnfolderBase]: 792/1366 cut-off events. [2024-06-21 18:33:41,607 INFO L125 PetriNetUnfolderBase]: For 318401/318401 co-relation queries the response was YES. [2024-06-21 18:33:41,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11897 conditions, 1366 events. 792/1366 cut-off events. For 318401/318401 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7022 event pairs, 74 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 11716. Up to 975 conditions per place. [2024-06-21 18:33:41,625 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 142 changer transitions 0/399 dead transitions. [2024-06-21 18:33:41,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 399 transitions, 5184 flow [2024-06-21 18:33:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:33:41,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 18:33:41,627 INFO L175 Difference]: Start difference. First operand has 405 places, 374 transitions, 3732 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:33:41,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 399 transitions, 5184 flow [2024-06-21 18:33:42,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 399 transitions, 5095 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 18:33:42,758 INFO L231 Difference]: Finished difference. Result has 407 places, 380 transitions, 4014 flow [2024-06-21 18:33:42,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4014, PETRI_PLACES=407, PETRI_TRANSITIONS=380} [2024-06-21 18:33:42,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-21 18:33:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 380 transitions, 4014 flow [2024-06-21 18:33:42,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:42,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:42,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 18:33:42,759 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:42,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 68715957, now seen corresponding path program 10 times [2024-06-21 18:33:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181182851] [2024-06-21 18:33:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:44,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181182851] [2024-06-21 18:33:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181182851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:33:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086279632] [2024-06-21 18:33:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:33:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:33:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:33:44,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:33:44,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 380 transitions, 4014 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:44,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:44,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:33:44,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:45,026 INFO L124 PetriNetUnfolderBase]: 795/1371 cut-off events. [2024-06-21 18:33:45,027 INFO L125 PetriNetUnfolderBase]: For 323737/323737 co-relation queries the response was YES. [2024-06-21 18:33:45,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 1371 events. 795/1371 cut-off events. For 323737/323737 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7055 event pairs, 75 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 12021. Up to 1169 conditions per place. [2024-06-21 18:33:45,046 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 94 changer transitions 0/397 dead transitions. [2024-06-21 18:33:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 397 transitions, 4882 flow [2024-06-21 18:33:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 18:33:45,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 18:33:45,047 INFO L175 Difference]: Start difference. First operand has 407 places, 380 transitions, 4014 flow. Second operand 10 states and 131 transitions. [2024-06-21 18:33:45,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 397 transitions, 4882 flow [2024-06-21 18:33:46,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 397 transitions, 4753 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 18:33:46,142 INFO L231 Difference]: Finished difference. Result has 411 places, 382 transitions, 4127 flow [2024-06-21 18:33:46,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4127, PETRI_PLACES=411, PETRI_TRANSITIONS=382} [2024-06-21 18:33:46,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-21 18:33:46,143 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 382 transitions, 4127 flow [2024-06-21 18:33:46,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:46,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:46,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:46,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 18:33:46,143 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:46,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash 642236882, now seen corresponding path program 19 times [2024-06-21 18:33:46,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:46,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696383763] [2024-06-21 18:33:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:46,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:47,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:47,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696383763] [2024-06-21 18:33:47,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696383763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:47,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195766776] [2024-06-21 18:33:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:47,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:47,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:47,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:47,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 382 transitions, 4127 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:47,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:47,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:47,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:48,516 INFO L124 PetriNetUnfolderBase]: 793/1368 cut-off events. [2024-06-21 18:33:48,517 INFO L125 PetriNetUnfolderBase]: For 319069/319069 co-relation queries the response was YES. [2024-06-21 18:33:48,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12198 conditions, 1368 events. 793/1368 cut-off events. For 319069/319069 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7033 event pairs, 74 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 12014. Up to 978 conditions per place. [2024-06-21 18:33:48,534 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 144 changer transitions 0/400 dead transitions. [2024-06-21 18:33:48,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 400 transitions, 5239 flow [2024-06-21 18:33:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 18:33:48,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 18:33:48,535 INFO L175 Difference]: Start difference. First operand has 411 places, 382 transitions, 4127 flow. Second operand 11 states and 138 transitions. [2024-06-21 18:33:48,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 400 transitions, 5239 flow [2024-06-21 18:33:49,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 400 transitions, 5011 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 18:33:49,735 INFO L231 Difference]: Finished difference. Result has 414 places, 382 transitions, 4194 flow [2024-06-21 18:33:49,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4194, PETRI_PLACES=414, PETRI_TRANSITIONS=382} [2024-06-21 18:33:49,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-21 18:33:49,735 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 382 transitions, 4194 flow [2024-06-21 18:33:49,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:49,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:49,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 18:33:49,736 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:49,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash 622834509, now seen corresponding path program 21 times [2024-06-21 18:33:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:49,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761027676] [2024-06-21 18:33:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761027676] [2024-06-21 18:33:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761027676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:51,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960580987] [2024-06-21 18:33:51,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:51,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:51,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 382 transitions, 4194 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:51,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:51,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:51,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:52,082 INFO L124 PetriNetUnfolderBase]: 799/1378 cut-off events. [2024-06-21 18:33:52,083 INFO L125 PetriNetUnfolderBase]: For 328527/328527 co-relation queries the response was YES. [2024-06-21 18:33:52,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 1378 events. 799/1378 cut-off events. For 328527/328527 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7072 event pairs, 59 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 12119. Up to 826 conditions per place. [2024-06-21 18:33:52,100 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 239 selfloop transitions, 170 changer transitions 0/411 dead transitions. [2024-06-21 18:33:52,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 411 transitions, 5432 flow [2024-06-21 18:33:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:33:52,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 18:33:52,102 INFO L175 Difference]: Start difference. First operand has 414 places, 382 transitions, 4194 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:33:52,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 411 transitions, 5432 flow [2024-06-21 18:33:53,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 411 transitions, 5139 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:33:53,233 INFO L231 Difference]: Finished difference. Result has 415 places, 386 transitions, 4306 flow [2024-06-21 18:33:53,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4306, PETRI_PLACES=415, PETRI_TRANSITIONS=386} [2024-06-21 18:33:53,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-21 18:33:53,234 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 386 transitions, 4306 flow [2024-06-21 18:33:53,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:53,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:53,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 18:33:53,234 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:53,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1154388514, now seen corresponding path program 20 times [2024-06-21 18:33:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656562842] [2024-06-21 18:33:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656562842] [2024-06-21 18:33:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656562842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:55,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:55,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726645015] [2024-06-21 18:33:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:55,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:55,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 386 transitions, 4306 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:55,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:55,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:55,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:56,009 INFO L124 PetriNetUnfolderBase]: 802/1383 cut-off events. [2024-06-21 18:33:56,010 INFO L125 PetriNetUnfolderBase]: For 324392/324392 co-relation queries the response was YES. [2024-06-21 18:33:56,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12516 conditions, 1383 events. 802/1383 cut-off events. For 324392/324392 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7139 event pairs, 90 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 12330. Up to 1290 conditions per place. [2024-06-21 18:33:56,025 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 366 selfloop transitions, 37 changer transitions 0/405 dead transitions. [2024-06-21 18:33:56,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 405 transitions, 5188 flow [2024-06-21 18:33:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 18:33:56,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 18:33:56,027 INFO L175 Difference]: Start difference. First operand has 415 places, 386 transitions, 4306 flow. Second operand 11 states and 128 transitions. [2024-06-21 18:33:56,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 405 transitions, 5188 flow [2024-06-21 18:33:57,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 405 transitions, 5048 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 18:33:57,432 INFO L231 Difference]: Finished difference. Result has 419 places, 388 transitions, 4279 flow [2024-06-21 18:33:57,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4166, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4279, PETRI_PLACES=419, PETRI_TRANSITIONS=388} [2024-06-21 18:33:57,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-21 18:33:57,433 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 388 transitions, 4279 flow [2024-06-21 18:33:57,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:57,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:57,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:57,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 18:33:57,433 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:33:57,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:57,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1729210373, now seen corresponding path program 22 times [2024-06-21 18:33:57,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:57,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004060410] [2024-06-21 18:33:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:57,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:59,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:59,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004060410] [2024-06-21 18:33:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004060410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:59,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:59,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:33:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849006524] [2024-06-21 18:33:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:59,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:33:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:33:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:33:59,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:33:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 388 transitions, 4279 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:33:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:33:59,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:59,911 INFO L124 PetriNetUnfolderBase]: 818/1409 cut-off events. [2024-06-21 18:33:59,912 INFO L125 PetriNetUnfolderBase]: For 357031/357031 co-relation queries the response was YES. [2024-06-21 18:33:59,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12969 conditions, 1409 events. 818/1409 cut-off events. For 357031/357031 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7291 event pairs, 73 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 12781. Up to 846 conditions per place. [2024-06-21 18:33:59,928 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 142 changer transitions 0/415 dead transitions. [2024-06-21 18:33:59,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 415 transitions, 5795 flow [2024-06-21 18:33:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:33:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:33:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:33:59,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 18:33:59,930 INFO L175 Difference]: Start difference. First operand has 419 places, 388 transitions, 4279 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:33:59,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 415 transitions, 5795 flow [2024-06-21 18:34:01,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 415 transitions, 5706 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 18:34:01,235 INFO L231 Difference]: Finished difference. Result has 421 places, 392 transitions, 4535 flow [2024-06-21 18:34:01,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4535, PETRI_PLACES=421, PETRI_TRANSITIONS=392} [2024-06-21 18:34:01,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-21 18:34:01,236 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 392 transitions, 4535 flow [2024-06-21 18:34:01,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:01,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:01,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 18:34:01,236 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:01,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1296641314, now seen corresponding path program 21 times [2024-06-21 18:34:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632121884] [2024-06-21 18:34:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632121884] [2024-06-21 18:34:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632121884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:03,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:03,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736438692] [2024-06-21 18:34:03,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:03,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:03,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 392 transitions, 4535 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:03,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:03,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:03,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:04,058 INFO L124 PetriNetUnfolderBase]: 831/1430 cut-off events. [2024-06-21 18:34:04,058 INFO L125 PetriNetUnfolderBase]: For 372343/372343 co-relation queries the response was YES. [2024-06-21 18:34:04,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13675 conditions, 1430 events. 831/1430 cut-off events. For 372343/372343 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7411 event pairs, 84 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 13486. Up to 1034 conditions per place. [2024-06-21 18:34:04,078 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 134 changer transitions 0/417 dead transitions. [2024-06-21 18:34:04,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 417 transitions, 6325 flow [2024-06-21 18:34:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:34:04,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:34:04,079 INFO L175 Difference]: Start difference. First operand has 421 places, 392 transitions, 4535 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:34:04,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 417 transitions, 6325 flow [2024-06-21 18:34:05,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 417 transitions, 6137 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 18:34:05,508 INFO L231 Difference]: Finished difference. Result has 425 places, 398 transitions, 4704 flow [2024-06-21 18:34:05,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4704, PETRI_PLACES=425, PETRI_TRANSITIONS=398} [2024-06-21 18:34:05,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-21 18:34:05,508 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 398 transitions, 4704 flow [2024-06-21 18:34:05,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:05,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:05,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:05,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 18:34:05,509 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:05,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1158107584, now seen corresponding path program 22 times [2024-06-21 18:34:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:05,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271649326] [2024-06-21 18:34:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271649326] [2024-06-21 18:34:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271649326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:07,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:07,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:07,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396736008] [2024-06-21 18:34:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:07,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:07,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:07,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:07,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:07,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 398 transitions, 4704 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:07,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:07,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:07,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:08,233 INFO L124 PetriNetUnfolderBase]: 829/1427 cut-off events. [2024-06-21 18:34:08,234 INFO L125 PetriNetUnfolderBase]: For 368464/368464 co-relation queries the response was YES. [2024-06-21 18:34:08,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13513 conditions, 1427 events. 829/1427 cut-off events. For 368464/368464 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7398 event pairs, 84 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 13323. Up to 1032 conditions per place. [2024-06-21 18:34:08,255 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 133 changer transitions 0/416 dead transitions. [2024-06-21 18:34:08,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 416 transitions, 6134 flow [2024-06-21 18:34:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:34:08,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:34:08,256 INFO L175 Difference]: Start difference. First operand has 425 places, 398 transitions, 4704 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:34:08,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 416 transitions, 6134 flow [2024-06-21 18:34:09,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 416 transitions, 5935 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 18:34:09,709 INFO L231 Difference]: Finished difference. Result has 430 places, 398 transitions, 4776 flow [2024-06-21 18:34:09,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4505, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4776, PETRI_PLACES=430, PETRI_TRANSITIONS=398} [2024-06-21 18:34:09,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-21 18:34:09,715 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 398 transitions, 4776 flow [2024-06-21 18:34:09,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:09,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:09,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:09,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 18:34:09,715 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:09,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:09,717 INFO L85 PathProgramCache]: Analyzing trace with hash 754408044, now seen corresponding path program 23 times [2024-06-21 18:34:09,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149297436] [2024-06-21 18:34:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:09,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:11,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149297436] [2024-06-21 18:34:11,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149297436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:11,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222500157] [2024-06-21 18:34:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:11,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:11,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 398 transitions, 4776 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:11,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:11,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:11,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:12,451 INFO L124 PetriNetUnfolderBase]: 832/1432 cut-off events. [2024-06-21 18:34:12,452 INFO L125 PetriNetUnfolderBase]: For 374086/374086 co-relation queries the response was YES. [2024-06-21 18:34:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13584 conditions, 1432 events. 832/1432 cut-off events. For 374086/374086 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7418 event pairs, 79 based on Foata normal form. 1/1432 useless extension candidates. Maximal degree in co-relation 13393. Up to 1036 conditions per place. [2024-06-21 18:34:12,473 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 145 changer transitions 0/417 dead transitions. [2024-06-21 18:34:12,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 417 transitions, 6238 flow [2024-06-21 18:34:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 18:34:12,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 18:34:12,474 INFO L175 Difference]: Start difference. First operand has 430 places, 398 transitions, 4776 flow. Second operand 11 states and 138 transitions. [2024-06-21 18:34:12,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 417 transitions, 6238 flow [2024-06-21 18:34:13,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 417 transitions, 5956 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 18:34:13,873 INFO L231 Difference]: Finished difference. Result has 431 places, 400 transitions, 4819 flow [2024-06-21 18:34:13,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4819, PETRI_PLACES=431, PETRI_TRANSITIONS=400} [2024-06-21 18:34:13,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-21 18:34:13,874 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 400 transitions, 4819 flow [2024-06-21 18:34:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:13,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:13,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:13,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 18:34:13,874 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:13,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1302213161, now seen corresponding path program 23 times [2024-06-21 18:34:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:13,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966045911] [2024-06-21 18:34:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966045911] [2024-06-21 18:34:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966045911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:15,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:15,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48365335] [2024-06-21 18:34:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:15,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:15,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 400 transitions, 4819 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:15,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:15,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:15,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:16,365 INFO L124 PetriNetUnfolderBase]: 838/1442 cut-off events. [2024-06-21 18:34:16,366 INFO L125 PetriNetUnfolderBase]: For 389470/389470 co-relation queries the response was YES. [2024-06-21 18:34:16,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13689 conditions, 1442 events. 838/1442 cut-off events. For 389470/389470 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7492 event pairs, 68 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 13497. Up to 875 conditions per place. [2024-06-21 18:34:16,386 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 150 changer transitions 0/423 dead transitions. [2024-06-21 18:34:16,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 423 transitions, 6325 flow [2024-06-21 18:34:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:34:16,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 18:34:16,388 INFO L175 Difference]: Start difference. First operand has 431 places, 400 transitions, 4819 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:34:16,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 423 transitions, 6325 flow [2024-06-21 18:34:17,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 423 transitions, 6051 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 18:34:17,990 INFO L231 Difference]: Finished difference. Result has 434 places, 402 transitions, 4876 flow [2024-06-21 18:34:17,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4876, PETRI_PLACES=434, PETRI_TRANSITIONS=402} [2024-06-21 18:34:17,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-21 18:34:17,991 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 402 transitions, 4876 flow [2024-06-21 18:34:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:17,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:17,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:17,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 18:34:17,992 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:17,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1299625327, now seen corresponding path program 24 times [2024-06-21 18:34:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025313834] [2024-06-21 18:34:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:19,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:19,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025313834] [2024-06-21 18:34:19,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025313834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:19,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:19,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101925628] [2024-06-21 18:34:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:19,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:19,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:19,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:19,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 402 transitions, 4876 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:19,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:19,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:19,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:20,524 INFO L124 PetriNetUnfolderBase]: 844/1452 cut-off events. [2024-06-21 18:34:20,524 INFO L125 PetriNetUnfolderBase]: For 395513/395513 co-relation queries the response was YES. [2024-06-21 18:34:20,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13858 conditions, 1452 events. 844/1452 cut-off events. For 395513/395513 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7561 event pairs, 68 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 13665. Up to 881 conditions per place. [2024-06-21 18:34:20,545 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 277 selfloop transitions, 147 changer transitions 0/426 dead transitions. [2024-06-21 18:34:20,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 426 transitions, 6404 flow [2024-06-21 18:34:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 18:34:20,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 18:34:20,547 INFO L175 Difference]: Start difference. First operand has 434 places, 402 transitions, 4876 flow. Second operand 11 states and 145 transitions. [2024-06-21 18:34:20,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 426 transitions, 6404 flow [2024-06-21 18:34:22,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 426 transitions, 6094 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:34:22,056 INFO L231 Difference]: Finished difference. Result has 437 places, 404 transitions, 4895 flow [2024-06-21 18:34:22,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4895, PETRI_PLACES=437, PETRI_TRANSITIONS=404} [2024-06-21 18:34:22,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-21 18:34:22,057 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 404 transitions, 4895 flow [2024-06-21 18:34:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:22,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:22,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:22,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 18:34:22,057 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:22,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1301998114, now seen corresponding path program 24 times [2024-06-21 18:34:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816355653] [2024-06-21 18:34:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:22,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816355653] [2024-06-21 18:34:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816355653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149736352] [2024-06-21 18:34:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:24,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:24,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 404 transitions, 4895 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:24,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:24,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:24,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:24,851 INFO L124 PetriNetUnfolderBase]: 847/1457 cut-off events. [2024-06-21 18:34:24,852 INFO L125 PetriNetUnfolderBase]: For 390807/390807 co-relation queries the response was YES. [2024-06-21 18:34:24,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13892 conditions, 1457 events. 847/1457 cut-off events. For 390807/390807 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7606 event pairs, 79 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 13698. Up to 1060 conditions per place. [2024-06-21 18:34:24,874 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 141 changer transitions 0/423 dead transitions. [2024-06-21 18:34:24,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 423 transitions, 6377 flow [2024-06-21 18:34:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:34:24,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-21 18:34:24,875 INFO L175 Difference]: Start difference. First operand has 437 places, 404 transitions, 4895 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:34:24,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 423 transitions, 6377 flow [2024-06-21 18:34:26,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 423 transitions, 6069 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 18:34:26,572 INFO L231 Difference]: Finished difference. Result has 439 places, 406 transitions, 4900 flow [2024-06-21 18:34:26,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4900, PETRI_PLACES=439, PETRI_TRANSITIONS=406} [2024-06-21 18:34:26,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-21 18:34:26,572 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 406 transitions, 4900 flow [2024-06-21 18:34:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:26,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:26,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:26,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 18:34:26,573 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:26,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1299827137, now seen corresponding path program 25 times [2024-06-21 18:34:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936779426] [2024-06-21 18:34:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:26,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:28,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936779426] [2024-06-21 18:34:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936779426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:28,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726473244] [2024-06-21 18:34:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:28,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:28,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 406 transitions, 4900 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:28,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:28,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:28,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:29,048 INFO L124 PetriNetUnfolderBase]: 843/1451 cut-off events. [2024-06-21 18:34:29,049 INFO L125 PetriNetUnfolderBase]: For 385458/385458 co-relation queries the response was YES. [2024-06-21 18:34:29,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13540 conditions, 1451 events. 843/1451 cut-off events. For 385458/385458 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7587 event pairs, 67 based on Foata normal form. 2/1452 useless extension candidates. Maximal degree in co-relation 13345. Up to 883 conditions per place. [2024-06-21 18:34:29,065 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 276 selfloop transitions, 149 changer transitions 0/427 dead transitions. [2024-06-21 18:34:29,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 427 transitions, 6118 flow [2024-06-21 18:34:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:34:29,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:34:29,066 INFO L175 Difference]: Start difference. First operand has 439 places, 406 transitions, 4900 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:34:29,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 427 transitions, 6118 flow [2024-06-21 18:34:30,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 427 transitions, 5801 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 18:34:30,714 INFO L231 Difference]: Finished difference. Result has 441 places, 406 transitions, 4886 flow [2024-06-21 18:34:30,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4886, PETRI_PLACES=441, PETRI_TRANSITIONS=406} [2024-06-21 18:34:30,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-21 18:34:30,714 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 406 transitions, 4886 flow [2024-06-21 18:34:30,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:30,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:30,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 18:34:30,715 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:30,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1299625110, now seen corresponding path program 25 times [2024-06-21 18:34:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:30,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006665170] [2024-06-21 18:34:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006665170] [2024-06-21 18:34:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006665170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:32,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:32,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444780828] [2024-06-21 18:34:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:32,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:32,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:32,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:32,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:32,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 406 transitions, 4886 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:32,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:32,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:32,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:33,516 INFO L124 PetriNetUnfolderBase]: 841/1448 cut-off events. [2024-06-21 18:34:33,517 INFO L125 PetriNetUnfolderBase]: For 369841/369841 co-relation queries the response was YES. [2024-06-21 18:34:33,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13456 conditions, 1448 events. 841/1448 cut-off events. For 369841/369841 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7536 event pairs, 78 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 13260. Up to 1052 conditions per place. [2024-06-21 18:34:33,537 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 140 changer transitions 0/422 dead transitions. [2024-06-21 18:34:33,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 422 transitions, 6056 flow [2024-06-21 18:34:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:34:33,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-21 18:34:33,539 INFO L175 Difference]: Start difference. First operand has 441 places, 406 transitions, 4886 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:34:33,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 422 transitions, 6056 flow [2024-06-21 18:34:35,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 422 transitions, 5728 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 18:34:35,165 INFO L231 Difference]: Finished difference. Result has 441 places, 406 transitions, 4843 flow [2024-06-21 18:34:35,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4843, PETRI_PLACES=441, PETRI_TRANSITIONS=406} [2024-06-21 18:34:35,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-21 18:34:35,165 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 406 transitions, 4843 flow [2024-06-21 18:34:35,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:35,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:35,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:35,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 18:34:35,166 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:35,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1299619375, now seen corresponding path program 11 times [2024-06-21 18:34:35,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:35,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989496666] [2024-06-21 18:34:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:35,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:36,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989496666] [2024-06-21 18:34:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989496666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:36,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:36,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760206784] [2024-06-21 18:34:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:36,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:34:36,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 406 transitions, 4843 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:34:36,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:36,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:34:36,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:37,377 INFO L124 PetriNetUnfolderBase]: 844/1453 cut-off events. [2024-06-21 18:34:37,378 INFO L125 PetriNetUnfolderBase]: For 374634/374634 co-relation queries the response was YES. [2024-06-21 18:34:37,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 1453 events. 844/1453 cut-off events. For 374634/374634 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7610 event pairs, 76 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 13249. Up to 1253 conditions per place. [2024-06-21 18:34:37,395 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 330 selfloop transitions, 89 changer transitions 0/421 dead transitions. [2024-06-21 18:34:37,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 421 transitions, 5753 flow [2024-06-21 18:34:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:34:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:34:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 18:34:37,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 18:34:37,397 INFO L175 Difference]: Start difference. First operand has 441 places, 406 transitions, 4843 flow. Second operand 10 states and 129 transitions. [2024-06-21 18:34:37,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 421 transitions, 5753 flow [2024-06-21 18:34:38,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 421 transitions, 5434 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:34:38,993 INFO L231 Difference]: Finished difference. Result has 440 places, 408 transitions, 4755 flow [2024-06-21 18:34:38,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4755, PETRI_PLACES=440, PETRI_TRANSITIONS=408} [2024-06-21 18:34:38,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-21 18:34:38,994 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 4755 flow [2024-06-21 18:34:38,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:34:38,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:38,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:38,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 18:34:38,994 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:38,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash -518231408, now seen corresponding path program 26 times [2024-06-21 18:34:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542502367] [2024-06-21 18:34:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542502367] [2024-06-21 18:34:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542502367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:41,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895425154] [2024-06-21 18:34:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:41,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:41,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 408 transitions, 4755 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:41,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:41,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:41,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:42,019 INFO L124 PetriNetUnfolderBase]: 842/1450 cut-off events. [2024-06-21 18:34:42,019 INFO L125 PetriNetUnfolderBase]: For 368419/368419 co-relation queries the response was YES. [2024-06-21 18:34:42,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13221 conditions, 1450 events. 842/1450 cut-off events. For 368419/368419 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7561 event pairs, 74 based on Foata normal form. 1/1450 useless extension candidates. Maximal degree in co-relation 13023. Up to 1357 conditions per place. [2024-06-21 18:34:42,040 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 386 selfloop transitions, 36 changer transitions 0/424 dead transitions. [2024-06-21 18:34:42,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 424 transitions, 5643 flow [2024-06-21 18:34:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 18:34:42,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 18:34:42,041 INFO L175 Difference]: Start difference. First operand has 440 places, 408 transitions, 4755 flow. Second operand 11 states and 128 transitions. [2024-06-21 18:34:42,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 424 transitions, 5643 flow [2024-06-21 18:34:43,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 424 transitions, 5432 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 18:34:43,439 INFO L231 Difference]: Finished difference. Result has 443 places, 408 transitions, 4621 flow [2024-06-21 18:34:43,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4544, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4621, PETRI_PLACES=443, PETRI_TRANSITIONS=408} [2024-06-21 18:34:43,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-21 18:34:43,440 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 408 transitions, 4621 flow [2024-06-21 18:34:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:43,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:43,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 18:34:43,440 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:43,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash -514512338, now seen corresponding path program 27 times [2024-06-21 18:34:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904342793] [2024-06-21 18:34:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:45,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:45,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904342793] [2024-06-21 18:34:45,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904342793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:45,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:45,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:45,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008074235] [2024-06-21 18:34:45,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:45,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:45,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:45,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:45,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:45,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:45,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 408 transitions, 4621 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:45,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:45,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:45,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:46,446 INFO L124 PetriNetUnfolderBase]: 850/1463 cut-off events. [2024-06-21 18:34:46,446 INFO L125 PetriNetUnfolderBase]: For 379193/379193 co-relation queries the response was YES. [2024-06-21 18:34:46,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13295 conditions, 1463 events. 850/1463 cut-off events. For 379193/379193 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7658 event pairs, 103 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 13096. Up to 1065 conditions per place. [2024-06-21 18:34:46,471 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 138 changer transitions 0/429 dead transitions. [2024-06-21 18:34:46,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 429 transitions, 6167 flow [2024-06-21 18:34:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:34:46,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:34:46,473 INFO L175 Difference]: Start difference. First operand has 443 places, 408 transitions, 4621 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:34:46,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 429 transitions, 6167 flow [2024-06-21 18:34:48,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 429 transitions, 6062 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 18:34:48,018 INFO L231 Difference]: Finished difference. Result has 444 places, 412 transitions, 4857 flow [2024-06-21 18:34:48,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4857, PETRI_PLACES=444, PETRI_TRANSITIONS=412} [2024-06-21 18:34:48,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-21 18:34:48,019 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 412 transitions, 4857 flow [2024-06-21 18:34:48,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:48,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:48,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 18:34:48,019 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -514506541, now seen corresponding path program 26 times [2024-06-21 18:34:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35961616] [2024-06-21 18:34:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35961616] [2024-06-21 18:34:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35961616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:49,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:49,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:34:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160567139] [2024-06-21 18:34:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:34:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:34:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:34:50,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:50,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 412 transitions, 4857 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:50,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:50,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:50,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:50,772 INFO L124 PetriNetUnfolderBase]: 856/1473 cut-off events. [2024-06-21 18:34:50,773 INFO L125 PetriNetUnfolderBase]: For 395688/395688 co-relation queries the response was YES. [2024-06-21 18:34:50,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13575 conditions, 1473 events. 856/1473 cut-off events. For 395688/395688 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7733 event pairs, 97 based on Foata normal form. 2/1474 useless extension candidates. Maximal degree in co-relation 13375. Up to 901 conditions per place. [2024-06-21 18:34:50,794 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 143 changer transitions 0/436 dead transitions. [2024-06-21 18:34:50,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 436 transitions, 6431 flow [2024-06-21 18:34:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:34:50,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 18:34:50,796 INFO L175 Difference]: Start difference. First operand has 444 places, 412 transitions, 4857 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:34:50,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 436 transitions, 6431 flow [2024-06-21 18:34:52,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 436 transitions, 5895 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 18:34:52,504 INFO L231 Difference]: Finished difference. Result has 445 places, 414 transitions, 4642 flow [2024-06-21 18:34:52,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4321, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4642, PETRI_PLACES=445, PETRI_TRANSITIONS=414} [2024-06-21 18:34:52,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 414 predicate places. [2024-06-21 18:34:52,504 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 414 transitions, 4642 flow [2024-06-21 18:34:52,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:52,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:52,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:52,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 18:34:52,505 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:52,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -514506758, now seen corresponding path program 28 times [2024-06-21 18:34:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13130541] [2024-06-21 18:34:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:52,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13130541] [2024-06-21 18:34:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13130541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:54,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494472533] [2024-06-21 18:34:54,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:54,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:54,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:54,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 414 transitions, 4642 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:54,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:54,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:54,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:55,465 INFO L124 PetriNetUnfolderBase]: 854/1470 cut-off events. [2024-06-21 18:34:55,465 INFO L125 PetriNetUnfolderBase]: For 378413/378413 co-relation queries the response was YES. [2024-06-21 18:34:55,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13316 conditions, 1470 events. 854/1470 cut-off events. For 378413/378413 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7694 event pairs, 105 based on Foata normal form. 1/1470 useless extension candidates. Maximal degree in co-relation 13116. Up to 1073 conditions per place. [2024-06-21 18:34:55,482 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 139 changer transitions 0/430 dead transitions. [2024-06-21 18:34:55,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 430 transitions, 5838 flow [2024-06-21 18:34:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:34:55,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 18:34:55,484 INFO L175 Difference]: Start difference. First operand has 445 places, 414 transitions, 4642 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:34:55,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 430 transitions, 5838 flow [2024-06-21 18:34:57,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 430 transitions, 5308 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 18:34:57,201 INFO L231 Difference]: Finished difference. Result has 446 places, 414 transitions, 4395 flow [2024-06-21 18:34:57,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4395, PETRI_PLACES=446, PETRI_TRANSITIONS=414} [2024-06-21 18:34:57,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-21 18:34:57,202 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 414 transitions, 4395 flow [2024-06-21 18:34:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:57,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:57,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 18:34:57,202 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:34:57,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash -370406761, now seen corresponding path program 27 times [2024-06-21 18:34:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791222189] [2024-06-21 18:34:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:58,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:58,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791222189] [2024-06-21 18:34:58,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791222189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:58,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:58,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094950339] [2024-06-21 18:34:58,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:58,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:34:58,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 414 transitions, 4395 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:34:58,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:58,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:34:58,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:59,723 INFO L124 PetriNetUnfolderBase]: 870/1496 cut-off events. [2024-06-21 18:34:59,723 INFO L125 PetriNetUnfolderBase]: For 415990/415990 co-relation queries the response was YES. [2024-06-21 18:34:59,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13567 conditions, 1496 events. 870/1496 cut-off events. For 415990/415990 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 7845 event pairs, 99 based on Foata normal form. 2/1497 useless extension candidates. Maximal degree in co-relation 13366. Up to 913 conditions per place. [2024-06-21 18:34:59,745 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 144 changer transitions 0/440 dead transitions. [2024-06-21 18:34:59,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 440 transitions, 6301 flow [2024-06-21 18:34:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:34:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:34:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 18:34:59,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 18:34:59,753 INFO L175 Difference]: Start difference. First operand has 446 places, 414 transitions, 4395 flow. Second operand 11 states and 148 transitions. [2024-06-21 18:34:59,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 440 transitions, 6301 flow [2024-06-21 18:35:01,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 440 transitions, 6018 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:35:01,537 INFO L231 Difference]: Finished difference. Result has 447 places, 418 transitions, 4453 flow [2024-06-21 18:35:01,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4453, PETRI_PLACES=447, PETRI_TRANSITIONS=418} [2024-06-21 18:35:01,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-21 18:35:01,538 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 418 transitions, 4453 flow [2024-06-21 18:35:01,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:01,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:01,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:01,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 18:35:01,538 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:01,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -370414418, now seen corresponding path program 29 times [2024-06-21 18:35:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17124994] [2024-06-21 18:35:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17124994] [2024-06-21 18:35:03,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17124994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:03,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886454656] [2024-06-21 18:35:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:03,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:03,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:03,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:03,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 418 transitions, 4453 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:03,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:03,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:04,632 INFO L124 PetriNetUnfolderBase]: 878/1509 cut-off events. [2024-06-21 18:35:04,632 INFO L125 PetriNetUnfolderBase]: For 421746/421746 co-relation queries the response was YES. [2024-06-21 18:35:04,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13899 conditions, 1509 events. 878/1509 cut-off events. For 421746/421746 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 7935 event pairs, 108 based on Foata normal form. 1/1509 useless extension candidates. Maximal degree in co-relation 13697. Up to 1109 conditions per place. [2024-06-21 18:35:04,655 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 142 changer transitions 0/438 dead transitions. [2024-06-21 18:35:04,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 438 transitions, 6017 flow [2024-06-21 18:35:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:35:04,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 18:35:04,657 INFO L175 Difference]: Start difference. First operand has 447 places, 418 transitions, 4453 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:35:04,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 438 transitions, 6017 flow [2024-06-21 18:35:06,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 438 transitions, 5738 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:35:06,321 INFO L231 Difference]: Finished difference. Result has 451 places, 422 transitions, 4511 flow [2024-06-21 18:35:06,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4511, PETRI_PLACES=451, PETRI_TRANSITIONS=422} [2024-06-21 18:35:06,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-21 18:35:06,322 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 422 transitions, 4511 flow [2024-06-21 18:35:06,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:06,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:06,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:06,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 18:35:06,323 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:06,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash 413927552, now seen corresponding path program 30 times [2024-06-21 18:35:06,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792947749] [2024-06-21 18:35:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:08,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792947749] [2024-06-21 18:35:08,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792947749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:08,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:08,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:08,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382442478] [2024-06-21 18:35:08,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:08,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:08,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:08,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:08,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 422 transitions, 4511 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:08,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:08,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:08,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:09,440 INFO L124 PetriNetUnfolderBase]: 881/1514 cut-off events. [2024-06-21 18:35:09,440 INFO L125 PetriNetUnfolderBase]: For 427116/427116 co-relation queries the response was YES. [2024-06-21 18:35:09,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13903 conditions, 1514 events. 881/1514 cut-off events. For 427116/427116 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7937 event pairs, 108 based on Foata normal form. 1/1514 useless extension candidates. Maximal degree in co-relation 13700. Up to 1113 conditions per place. [2024-06-21 18:35:09,462 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 141 changer transitions 0/440 dead transitions. [2024-06-21 18:35:09,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 440 transitions, 6063 flow [2024-06-21 18:35:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 18:35:09,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:35:09,464 INFO L175 Difference]: Start difference. First operand has 451 places, 422 transitions, 4511 flow. Second operand 11 states and 144 transitions. [2024-06-21 18:35:09,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 440 transitions, 6063 flow [2024-06-21 18:35:11,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 440 transitions, 5793 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:35:11,255 INFO L231 Difference]: Finished difference. Result has 455 places, 424 transitions, 4556 flow [2024-06-21 18:35:11,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4556, PETRI_PLACES=455, PETRI_TRANSITIONS=424} [2024-06-21 18:35:11,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-21 18:35:11,256 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 424 transitions, 4556 flow [2024-06-21 18:35:11,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:11,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:11,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:11,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 18:35:11,256 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:11,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash -370621808, now seen corresponding path program 31 times [2024-06-21 18:35:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835374638] [2024-06-21 18:35:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:13,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835374638] [2024-06-21 18:35:13,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835374638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:13,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:13,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:13,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108720402] [2024-06-21 18:35:13,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:13,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:13,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:13,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 424 transitions, 4556 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:13,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:13,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:13,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:14,326 INFO L124 PetriNetUnfolderBase]: 879/1511 cut-off events. [2024-06-21 18:35:14,327 INFO L125 PetriNetUnfolderBase]: For 421133/421133 co-relation queries the response was YES. [2024-06-21 18:35:14,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13768 conditions, 1511 events. 879/1511 cut-off events. For 421133/421133 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7922 event pairs, 108 based on Foata normal form. 1/1511 useless extension candidates. Maximal degree in co-relation 13564. Up to 1111 conditions per place. [2024-06-21 18:35:14,350 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 142 changer transitions 0/439 dead transitions. [2024-06-21 18:35:14,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 439 transitions, 5774 flow [2024-06-21 18:35:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:35:14,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 18:35:14,352 INFO L175 Difference]: Start difference. First operand has 455 places, 424 transitions, 4556 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:35:14,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 439 transitions, 5774 flow [2024-06-21 18:35:16,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 439 transitions, 5455 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 18:35:16,049 INFO L231 Difference]: Finished difference. Result has 457 places, 424 transitions, 4526 flow [2024-06-21 18:35:16,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4526, PETRI_PLACES=457, PETRI_TRANSITIONS=424} [2024-06-21 18:35:16,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-21 18:35:16,050 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 424 transitions, 4526 flow [2024-06-21 18:35:16,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:16,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:16,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:16,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 18:35:16,050 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:16,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash -370414201, now seen corresponding path program 28 times [2024-06-21 18:35:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:16,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407737479] [2024-06-21 18:35:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:17,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407737479] [2024-06-21 18:35:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407737479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:17,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:17,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:35:17,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160541773] [2024-06-21 18:35:17,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:17,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:35:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:35:17,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:35:18,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:18,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 424 transitions, 4526 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:18,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:18,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:18,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:18,913 INFO L124 PetriNetUnfolderBase]: 885/1521 cut-off events. [2024-06-21 18:35:18,913 INFO L125 PetriNetUnfolderBase]: For 438548/438548 co-relation queries the response was YES. [2024-06-21 18:35:18,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13824 conditions, 1521 events. 885/1521 cut-off events. For 438548/438548 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8021 event pairs, 98 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 13619. Up to 934 conditions per place. [2024-06-21 18:35:18,983 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 144 changer transitions 0/449 dead transitions. [2024-06-21 18:35:18,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 449 transitions, 6456 flow [2024-06-21 18:35:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 18:35:18,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-21 18:35:18,984 INFO L175 Difference]: Start difference. First operand has 457 places, 424 transitions, 4526 flow. Second operand 11 states and 150 transitions. [2024-06-21 18:35:18,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 449 transitions, 6456 flow [2024-06-21 18:35:20,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 449 transitions, 6167 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:35:20,618 INFO L231 Difference]: Finished difference. Result has 458 places, 426 transitions, 4552 flow [2024-06-21 18:35:20,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4552, PETRI_PLACES=458, PETRI_TRANSITIONS=426} [2024-06-21 18:35:20,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 427 predicate places. [2024-06-21 18:35:20,618 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 426 transitions, 4552 flow [2024-06-21 18:35:20,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:20,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:20,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 18:35:20,619 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:20,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash -370616011, now seen corresponding path program 29 times [2024-06-21 18:35:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:20,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061293042] [2024-06-21 18:35:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:20,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061293042] [2024-06-21 18:35:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061293042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:22,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:22,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:35:22,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183163554] [2024-06-21 18:35:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:35:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:35:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:35:22,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:22,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 426 transitions, 4552 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:22,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:22,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:22,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:23,535 INFO L124 PetriNetUnfolderBase]: 881/1515 cut-off events. [2024-06-21 18:35:23,535 INFO L125 PetriNetUnfolderBase]: For 420520/420520 co-relation queries the response was YES. [2024-06-21 18:35:23,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13588 conditions, 1515 events. 881/1515 cut-off events. For 420520/420520 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 7996 event pairs, 100 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 13382. Up to 931 conditions per place. [2024-06-21 18:35:23,553 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 143 changer transitions 0/448 dead transitions. [2024-06-21 18:35:23,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 448 transitions, 6152 flow [2024-06-21 18:35:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 18:35:23,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-21 18:35:23,554 INFO L175 Difference]: Start difference. First operand has 458 places, 426 transitions, 4552 flow. Second operand 11 states and 150 transitions. [2024-06-21 18:35:23,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 448 transitions, 6152 flow [2024-06-21 18:35:25,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 448 transitions, 5855 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:35:25,188 INFO L231 Difference]: Finished difference. Result has 461 places, 426 transitions, 4546 flow [2024-06-21 18:35:25,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4255, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4546, PETRI_PLACES=461, PETRI_TRANSITIONS=426} [2024-06-21 18:35:25,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-21 18:35:25,189 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 426 transitions, 4546 flow [2024-06-21 18:35:25,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:25,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:25,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:25,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 18:35:25,189 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:25,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash 344485109, now seen corresponding path program 30 times [2024-06-21 18:35:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079354881] [2024-06-21 18:35:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:26,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079354881] [2024-06-21 18:35:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079354881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:26,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:26,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376592652] [2024-06-21 18:35:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:26,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:26,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:27,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:27,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 426 transitions, 4546 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:27,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:27,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:27,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:27,905 INFO L124 PetriNetUnfolderBase]: 907/1557 cut-off events. [2024-06-21 18:35:27,905 INFO L125 PetriNetUnfolderBase]: For 474689/474689 co-relation queries the response was YES. [2024-06-21 18:35:27,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14474 conditions, 1557 events. 907/1557 cut-off events. For 474689/474689 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8216 event pairs, 82 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 14267. Up to 955 conditions per place. [2024-06-21 18:35:27,929 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 293 selfloop transitions, 159 changer transitions 0/454 dead transitions. [2024-06-21 18:35:27,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 454 transitions, 6868 flow [2024-06-21 18:35:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 18:35:27,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 18:35:27,930 INFO L175 Difference]: Start difference. First operand has 461 places, 426 transitions, 4546 flow. Second operand 11 states and 146 transitions. [2024-06-21 18:35:27,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 454 transitions, 6868 flow [2024-06-21 18:35:29,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 454 transitions, 6549 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:35:29,757 INFO L231 Difference]: Finished difference. Result has 461 places, 432 transitions, 4640 flow [2024-06-21 18:35:29,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4239, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4640, PETRI_PLACES=461, PETRI_TRANSITIONS=432} [2024-06-21 18:35:29,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-21 18:35:29,758 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 432 transitions, 4640 flow [2024-06-21 18:35:29,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:29,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:29,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:29,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 18:35:29,758 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:29,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 689231763, now seen corresponding path program 6 times [2024-06-21 18:35:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170352794] [2024-06-21 18:35:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170352794] [2024-06-21 18:35:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170352794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:31,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:31,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:35:31,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680534075] [2024-06-21 18:35:31,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:35:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:35:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:35:31,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:35:31,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 432 transitions, 4640 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:31,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:31,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:35:31,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:32,657 INFO L124 PetriNetUnfolderBase]: 822/1450 cut-off events. [2024-06-21 18:35:32,658 INFO L125 PetriNetUnfolderBase]: For 465223/465250 co-relation queries the response was YES. [2024-06-21 18:35:32,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13692 conditions, 1450 events. 822/1450 cut-off events. For 465223/465250 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7892 event pairs, 88 based on Foata normal form. 3/1432 useless extension candidates. Maximal degree in co-relation 13484. Up to 1271 conditions per place. [2024-06-21 18:35:32,677 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 372 selfloop transitions, 34 changer transitions 0/447 dead transitions. [2024-06-21 18:35:32,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 447 transitions, 5500 flow [2024-06-21 18:35:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:35:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:35:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 18:35:32,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 18:35:32,679 INFO L175 Difference]: Start difference. First operand has 461 places, 432 transitions, 4640 flow. Second operand 10 states and 127 transitions. [2024-06-21 18:35:32,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 447 transitions, 5500 flow [2024-06-21 18:35:34,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 447 transitions, 5220 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 18:35:34,291 INFO L231 Difference]: Finished difference. Result has 465 places, 432 transitions, 4432 flow [2024-06-21 18:35:34,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4432, PETRI_PLACES=465, PETRI_TRANSITIONS=432} [2024-06-21 18:35:34,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 434 predicate places. [2024-06-21 18:35:34,291 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 432 transitions, 4432 flow [2024-06-21 18:35:34,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:34,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:34,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:34,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 18:35:34,292 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:34,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash 615485739, now seen corresponding path program 31 times [2024-06-21 18:35:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:34,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960968655] [2024-06-21 18:35:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:36,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960968655] [2024-06-21 18:35:36,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960968655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:36,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:36,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150231793] [2024-06-21 18:35:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:36,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:36,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:36,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 432 transitions, 4432 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:36,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:36,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:36,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:36,895 INFO L124 PetriNetUnfolderBase]: 900/1547 cut-off events. [2024-06-21 18:35:36,896 INFO L125 PetriNetUnfolderBase]: For 436525/436525 co-relation queries the response was YES. [2024-06-21 18:35:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13552 conditions, 1547 events. 900/1547 cut-off events. For 436525/436525 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8181 event pairs, 81 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 13343. Up to 947 conditions per place. [2024-06-21 18:35:36,921 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 171 changer transitions 0/451 dead transitions. [2024-06-21 18:35:36,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 451 transitions, 6030 flow [2024-06-21 18:35:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:35:36,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 18:35:36,923 INFO L175 Difference]: Start difference. First operand has 465 places, 432 transitions, 4432 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:35:36,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 451 transitions, 6030 flow [2024-06-21 18:35:38,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 451 transitions, 5898 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 18:35:38,600 INFO L231 Difference]: Finished difference. Result has 467 places, 432 transitions, 4647 flow [2024-06-21 18:35:38,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4300, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4647, PETRI_PLACES=467, PETRI_TRANSITIONS=432} [2024-06-21 18:35:38,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-21 18:35:38,601 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 432 transitions, 4647 flow [2024-06-21 18:35:38,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:38,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:38,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:38,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 18:35:38,601 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:38,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash 681812533, now seen corresponding path program 32 times [2024-06-21 18:35:38,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:38,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987882465] [2024-06-21 18:35:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:38,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:40,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987882465] [2024-06-21 18:35:40,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987882465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:40,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:40,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:40,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959933032] [2024-06-21 18:35:40,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:40,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:40,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:40,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:40,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 432 transitions, 4647 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:40,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:40,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:40,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:41,235 INFO L124 PetriNetUnfolderBase]: 906/1556 cut-off events. [2024-06-21 18:35:41,236 INFO L125 PetriNetUnfolderBase]: For 442334/442334 co-relation queries the response was YES. [2024-06-21 18:35:41,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13902 conditions, 1556 events. 906/1556 cut-off events. For 442334/442334 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8247 event pairs, 79 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 13692. Up to 953 conditions per place. [2024-06-21 18:35:41,258 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 155 changer transitions 0/455 dead transitions. [2024-06-21 18:35:41,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 455 transitions, 6615 flow [2024-06-21 18:35:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 18:35:41,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 18:35:41,260 INFO L175 Difference]: Start difference. First operand has 467 places, 432 transitions, 4647 flow. Second operand 11 states and 146 transitions. [2024-06-21 18:35:41,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 455 transitions, 6615 flow [2024-06-21 18:35:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 455 transitions, 6278 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 18:35:42,956 INFO L231 Difference]: Finished difference. Result has 467 places, 434 transitions, 4655 flow [2024-06-21 18:35:42,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4655, PETRI_PLACES=467, PETRI_TRANSITIONS=434} [2024-06-21 18:35:42,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-21 18:35:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 434 transitions, 4655 flow [2024-06-21 18:35:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:42,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:42,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 18:35:42,958 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 681804876, now seen corresponding path program 32 times [2024-06-21 18:35:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294677047] [2024-06-21 18:35:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294677047] [2024-06-21 18:35:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294677047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:45,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:45,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:45,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114926476] [2024-06-21 18:35:45,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:45,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:45,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:45,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:45,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 434 transitions, 4655 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:45,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:45,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:45,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:46,034 INFO L124 PetriNetUnfolderBase]: 914/1569 cut-off events. [2024-06-21 18:35:46,034 INFO L125 PetriNetUnfolderBase]: For 448123/448123 co-relation queries the response was YES. [2024-06-21 18:35:46,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14083 conditions, 1569 events. 914/1569 cut-off events. For 448123/448123 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8338 event pairs, 88 based on Foata normal form. 1/1569 useless extension candidates. Maximal degree in co-relation 13874. Up to 1166 conditions per place. [2024-06-21 18:35:46,058 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 151 changer transitions 0/453 dead transitions. [2024-06-21 18:35:46,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 453 transitions, 6285 flow [2024-06-21 18:35:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:35:46,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 18:35:46,060 INFO L175 Difference]: Start difference. First operand has 467 places, 434 transitions, 4655 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:35:46,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 453 transitions, 6285 flow [2024-06-21 18:35:47,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 453 transitions, 5855 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 18:35:47,819 INFO L231 Difference]: Finished difference. Result has 467 places, 438 transitions, 4584 flow [2024-06-21 18:35:47,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4225, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4584, PETRI_PLACES=467, PETRI_TRANSITIONS=438} [2024-06-21 18:35:47,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-21 18:35:47,820 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 438 transitions, 4584 flow [2024-06-21 18:35:47,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:47,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:47,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:47,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 18:35:47,820 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:47,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash 615218612, now seen corresponding path program 33 times [2024-06-21 18:35:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:47,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966409324] [2024-06-21 18:35:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966409324] [2024-06-21 18:35:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966409324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:49,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:49,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731488203] [2024-06-21 18:35:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:50,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:50,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 438 transitions, 4584 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:50,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:50,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:50,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:50,906 INFO L124 PetriNetUnfolderBase]: 912/1566 cut-off events. [2024-06-21 18:35:50,906 INFO L125 PetriNetUnfolderBase]: For 439806/439806 co-relation queries the response was YES. [2024-06-21 18:35:50,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13804 conditions, 1566 events. 912/1566 cut-off events. For 439806/439806 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8289 event pairs, 88 based on Foata normal form. 1/1566 useless extension candidates. Maximal degree in co-relation 13594. Up to 1164 conditions per place. [2024-06-21 18:35:50,929 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 167 changer transitions 0/452 dead transitions. [2024-06-21 18:35:50,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 452 transitions, 5840 flow [2024-06-21 18:35:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:35:50,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 18:35:50,931 INFO L175 Difference]: Start difference. First operand has 467 places, 438 transitions, 4584 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:35:50,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 452 transitions, 5840 flow [2024-06-21 18:35:52,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 452 transitions, 5474 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 18:35:52,772 INFO L231 Difference]: Finished difference. Result has 469 places, 438 transitions, 4557 flow [2024-06-21 18:35:52,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4557, PETRI_PLACES=469, PETRI_TRANSITIONS=438} [2024-06-21 18:35:52,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-21 18:35:52,773 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 438 transitions, 4557 flow [2024-06-21 18:35:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:35:52,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:52,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 18:35:52,773 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:52,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 615218829, now seen corresponding path program 33 times [2024-06-21 18:35:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122155606] [2024-06-21 18:35:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122155606] [2024-06-21 18:35:54,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122155606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:54,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:54,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:35:54,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069328741] [2024-06-21 18:35:54,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:54,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:35:54,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:54,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:35:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:35:54,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:54,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 438 transitions, 4557 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:54,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:54,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:55,582 INFO L124 PetriNetUnfolderBase]: 908/1560 cut-off events. [2024-06-21 18:35:55,583 INFO L125 PetriNetUnfolderBase]: For 432040/432040 co-relation queries the response was YES. [2024-06-21 18:35:55,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 1560 events. 908/1560 cut-off events. For 432040/432040 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8267 event pairs, 78 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 13215. Up to 960 conditions per place. [2024-06-21 18:35:55,606 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 162 changer transitions 0/458 dead transitions. [2024-06-21 18:35:55,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 458 transitions, 6193 flow [2024-06-21 18:35:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:35:55,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:35:55,608 INFO L175 Difference]: Start difference. First operand has 469 places, 438 transitions, 4557 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:35:55,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 458 transitions, 6193 flow [2024-06-21 18:35:57,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 458 transitions, 5836 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 18:35:57,155 INFO L231 Difference]: Finished difference. Result has 470 places, 438 transitions, 4529 flow [2024-06-21 18:35:57,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4200, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4529, PETRI_PLACES=470, PETRI_TRANSITIONS=438} [2024-06-21 18:35:57,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-21 18:35:57,155 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 438 transitions, 4529 flow [2024-06-21 18:35:57,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:57,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:57,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 18:35:57,156 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:35:57,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash 608068989, now seen corresponding path program 34 times [2024-06-21 18:35:57,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:57,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26770425] [2024-06-21 18:35:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:57,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:59,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26770425] [2024-06-21 18:35:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26770425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:59,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:59,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:35:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557321211] [2024-06-21 18:35:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:35:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:35:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:35:59,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:35:59,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 438 transitions, 4529 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:59,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:59,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:35:59,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:59,948 INFO L124 PetriNetUnfolderBase]: 914/1570 cut-off events. [2024-06-21 18:35:59,949 INFO L125 PetriNetUnfolderBase]: For 437663/437663 co-relation queries the response was YES. [2024-06-21 18:35:59,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13552 conditions, 1570 events. 914/1570 cut-off events. For 437663/437663 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 8354 event pairs, 78 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 13341. Up to 966 conditions per place. [2024-06-21 18:35:59,973 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 156 changer transitions 0/461 dead transitions. [2024-06-21 18:35:59,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 461 transitions, 6209 flow [2024-06-21 18:35:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:35:59,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 18:35:59,974 INFO L175 Difference]: Start difference. First operand has 470 places, 438 transitions, 4529 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:35:59,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 461 transitions, 6209 flow [2024-06-21 18:36:01,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 461 transitions, 5878 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:01,463 INFO L231 Difference]: Finished difference. Result has 471 places, 440 transitions, 4541 flow [2024-06-21 18:36:01,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4541, PETRI_PLACES=471, PETRI_TRANSITIONS=440} [2024-06-21 18:36:01,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-21 18:36:01,463 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 440 transitions, 4541 flow [2024-06-21 18:36:01,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:01,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:01,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 18:36:01,464 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:01,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 607866962, now seen corresponding path program 34 times [2024-06-21 18:36:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:01,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746968089] [2024-06-21 18:36:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746968089] [2024-06-21 18:36:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746968089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:03,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:03,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986744566] [2024-06-21 18:36:03,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:03,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:03,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 440 transitions, 4541 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:36:03,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:03,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:03,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:04,485 INFO L124 PetriNetUnfolderBase]: 917/1575 cut-off events. [2024-06-21 18:36:04,485 INFO L125 PetriNetUnfolderBase]: For 429501/429501 co-relation queries the response was YES. [2024-06-21 18:36:04,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13594 conditions, 1575 events. 917/1575 cut-off events. For 429501/429501 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8376 event pairs, 87 based on Foata normal form. 1/1575 useless extension candidates. Maximal degree in co-relation 13382. Up to 1172 conditions per place. [2024-06-21 18:36:04,509 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 154 changer transitions 0/456 dead transitions. [2024-06-21 18:36:04,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 456 transitions, 5831 flow [2024-06-21 18:36:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:36:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:36:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 18:36:04,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 18:36:04,510 INFO L175 Difference]: Start difference. First operand has 471 places, 440 transitions, 4541 flow. Second operand 11 states and 138 transitions. [2024-06-21 18:36:04,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 456 transitions, 5831 flow [2024-06-21 18:36:06,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 456 transitions, 5518 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 18:36:06,100 INFO L231 Difference]: Finished difference. Result has 474 places, 442 transitions, 4561 flow [2024-06-21 18:36:06,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4228, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4561, PETRI_PLACES=474, PETRI_TRANSITIONS=442} [2024-06-21 18:36:06,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-21 18:36:06,101 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 442 transitions, 4561 flow [2024-06-21 18:36:06,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:36:06,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:06,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:06,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 18:36:06,101 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:06,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash 607861382, now seen corresponding path program 35 times [2024-06-21 18:36:06,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:06,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465772994] [2024-06-21 18:36:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:06,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:08,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465772994] [2024-06-21 18:36:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465772994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:08,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:08,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:08,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556757382] [2024-06-21 18:36:08,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:08,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:08,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:08,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:08,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:08,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 442 transitions, 4561 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:36:08,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:08,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:08,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:09,174 INFO L124 PetriNetUnfolderBase]: 915/1572 cut-off events. [2024-06-21 18:36:09,175 INFO L125 PetriNetUnfolderBase]: For 420878/420878 co-relation queries the response was YES. [2024-06-21 18:36:09,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13371 conditions, 1572 events. 915/1572 cut-off events. For 420878/420878 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8365 event pairs, 87 based on Foata normal form. 1/1572 useless extension candidates. Maximal degree in co-relation 13158. Up to 1170 conditions per place. [2024-06-21 18:36:09,199 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 156 changer transitions 0/455 dead transitions. [2024-06-21 18:36:09,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 455 transitions, 5499 flow [2024-06-21 18:36:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:36:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:36:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:36:09,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 18:36:09,200 INFO L175 Difference]: Start difference. First operand has 474 places, 442 transitions, 4561 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:36:09,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 455 transitions, 5499 flow [2024-06-21 18:36:10,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 455 transitions, 5142 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:10,639 INFO L231 Difference]: Finished difference. Result has 475 places, 442 transitions, 4521 flow [2024-06-21 18:36:10,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4521, PETRI_PLACES=475, PETRI_TRANSITIONS=442} [2024-06-21 18:36:10,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-21 18:36:10,639 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 442 transitions, 4521 flow [2024-06-21 18:36:10,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-21 18:36:10,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:10,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:10,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 18:36:10,640 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:10,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 607861227, now seen corresponding path program 12 times [2024-06-21 18:36:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634737670] [2024-06-21 18:36:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:12,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634737670] [2024-06-21 18:36:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634737670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:12,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:12,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311107729] [2024-06-21 18:36:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:12,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:12,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 18:36:12,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 442 transitions, 4521 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:36:12,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:12,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 18:36:12,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:12,909 INFO L124 PetriNetUnfolderBase]: 913/1569 cut-off events. [2024-06-21 18:36:12,910 INFO L125 PetriNetUnfolderBase]: For 412126/412126 co-relation queries the response was YES. [2024-06-21 18:36:12,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13190 conditions, 1569 events. 913/1569 cut-off events. For 412126/412126 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8368 event pairs, 86 based on Foata normal form. 1/1569 useless extension candidates. Maximal degree in co-relation 12976. Up to 1371 conditions per place. [2024-06-21 18:36:12,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 368 selfloop transitions, 85 changer transitions 0/455 dead transitions. [2024-06-21 18:36:12,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 455 transitions, 5491 flow [2024-06-21 18:36:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:36:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:36:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 18:36:12,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 18:36:12,935 INFO L175 Difference]: Start difference. First operand has 475 places, 442 transitions, 4521 flow. Second operand 10 states and 127 transitions. [2024-06-21 18:36:12,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 455 transitions, 5491 flow [2024-06-21 18:36:14,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 455 transitions, 5174 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:14,528 INFO L231 Difference]: Finished difference. Result has 475 places, 444 transitions, 4424 flow [2024-06-21 18:36:14,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4424, PETRI_PLACES=475, PETRI_TRANSITIONS=444} [2024-06-21 18:36:14,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-21 18:36:14,529 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 444 transitions, 4424 flow [2024-06-21 18:36:14,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-21 18:36:14,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:14,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:14,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 18:36:14,530 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:14,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 607867179, now seen corresponding path program 35 times [2024-06-21 18:36:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446846395] [2024-06-21 18:36:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446846395] [2024-06-21 18:36:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446846395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555767559] [2024-06-21 18:36:16,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:16,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:16,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:16,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 444 transitions, 4424 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:16,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:16,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:16,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:17,373 INFO L124 PetriNetUnfolderBase]: 909/1563 cut-off events. [2024-06-21 18:36:17,373 INFO L125 PetriNetUnfolderBase]: For 402964/402964 co-relation queries the response was YES. [2024-06-21 18:36:17,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12748 conditions, 1563 events. 909/1563 cut-off events. For 402964/402964 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8330 event pairs, 75 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 12533. Up to 962 conditions per place. [2024-06-21 18:36:17,397 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 302 selfloop transitions, 159 changer transitions 0/463 dead transitions. [2024-06-21 18:36:17,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 463 transitions, 5754 flow [2024-06-21 18:36:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:36:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:36:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:36:17,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:36:17,399 INFO L175 Difference]: Start difference. First operand has 475 places, 444 transitions, 4424 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:36:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 463 transitions, 5754 flow [2024-06-21 18:36:18,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 463 transitions, 5540 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 18:36:18,873 INFO L231 Difference]: Finished difference. Result has 478 places, 444 transitions, 4535 flow [2024-06-21 18:36:18,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4535, PETRI_PLACES=478, PETRI_TRANSITIONS=444} [2024-06-21 18:36:18,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-21 18:36:18,874 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 444 transitions, 4535 flow [2024-06-21 18:36:18,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:18,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:18,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:18,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 18:36:18,874 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:18,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1319878773, now seen corresponding path program 1 times [2024-06-21 18:36:18,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:18,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526465702] [2024-06-21 18:36:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:20,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526465702] [2024-06-21 18:36:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526465702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:20,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:36:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035923665] [2024-06-21 18:36:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:20,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:36:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:20,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:36:20,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:36:20,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:20,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 444 transitions, 4535 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:20,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:20,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:20,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:21,517 INFO L124 PetriNetUnfolderBase]: 925/1597 cut-off events. [2024-06-21 18:36:21,518 INFO L125 PetriNetUnfolderBase]: For 432950/432950 co-relation queries the response was YES. [2024-06-21 18:36:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13426 conditions, 1597 events. 925/1597 cut-off events. For 432950/432950 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8632 event pairs, 188 based on Foata normal form. 2/1598 useless extension candidates. Maximal degree in co-relation 13210. Up to 1519 conditions per place. [2024-06-21 18:36:21,543 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 441 selfloop transitions, 24 changer transitions 0/467 dead transitions. [2024-06-21 18:36:21,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 467 transitions, 5905 flow [2024-06-21 18:36:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 18:36:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 18:36:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-21 18:36:21,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2024-06-21 18:36:21,544 INFO L175 Difference]: Start difference. First operand has 478 places, 444 transitions, 4535 flow. Second operand 13 states and 140 transitions. [2024-06-21 18:36:21,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 467 transitions, 5905 flow [2024-06-21 18:36:23,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 467 transitions, 5536 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-21 18:36:23,018 INFO L231 Difference]: Finished difference. Result has 480 places, 447 transitions, 4279 flow [2024-06-21 18:36:23,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4166, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4279, PETRI_PLACES=480, PETRI_TRANSITIONS=447} [2024-06-21 18:36:23,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 449 predicate places. [2024-06-21 18:36:23,019 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 447 transitions, 4279 flow [2024-06-21 18:36:23,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:23,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:23,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:23,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 18:36:23,019 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1319818323, now seen corresponding path program 2 times [2024-06-21 18:36:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987181483] [2024-06-21 18:36:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987181483] [2024-06-21 18:36:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987181483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:24,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:36:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253714106] [2024-06-21 18:36:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:36:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:36:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:36:25,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:25,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 447 transitions, 4279 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:25,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:25,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:25,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:25,683 INFO L124 PetriNetUnfolderBase]: 929/1605 cut-off events. [2024-06-21 18:36:25,683 INFO L125 PetriNetUnfolderBase]: For 436383/436383 co-relation queries the response was YES. [2024-06-21 18:36:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13183 conditions, 1605 events. 929/1605 cut-off events. For 436383/436383 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8684 event pairs, 192 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 12965. Up to 1550 conditions per place. [2024-06-21 18:36:25,708 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 440 selfloop transitions, 23 changer transitions 0/465 dead transitions. [2024-06-21 18:36:25,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 465 transitions, 5278 flow [2024-06-21 18:36:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 18:36:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 18:36:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-21 18:36:25,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3293269230769231 [2024-06-21 18:36:25,709 INFO L175 Difference]: Start difference. First operand has 480 places, 447 transitions, 4279 flow. Second operand 13 states and 137 transitions. [2024-06-21 18:36:25,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 465 transitions, 5278 flow [2024-06-21 18:36:27,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 465 transitions, 5210 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 18:36:27,286 INFO L231 Difference]: Finished difference. Result has 484 places, 448 transitions, 4290 flow [2024-06-21 18:36:27,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4290, PETRI_PLACES=484, PETRI_TRANSITIONS=448} [2024-06-21 18:36:27,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-21 18:36:27,287 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 448 transitions, 4290 flow [2024-06-21 18:36:27,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:27,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:27,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:27,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 18:36:27,288 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:27,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1319818199, now seen corresponding path program 1 times [2024-06-21 18:36:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292661765] [2024-06-21 18:36:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:27,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292661765] [2024-06-21 18:36:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292661765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:29,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:29,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:29,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638647799] [2024-06-21 18:36:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:29,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:29,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 448 transitions, 4290 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:29,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:29,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:29,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:29,857 INFO L124 PetriNetUnfolderBase]: 937/1618 cut-off events. [2024-06-21 18:36:29,858 INFO L125 PetriNetUnfolderBase]: For 443328/443328 co-relation queries the response was YES. [2024-06-21 18:36:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 1618 events. 937/1618 cut-off events. For 443328/443328 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 8742 event pairs, 191 based on Foata normal form. 1/1618 useless extension candidates. Maximal degree in co-relation 13194. Up to 1557 conditions per place. [2024-06-21 18:36:29,884 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 441 selfloop transitions, 26 changer transitions 0/469 dead transitions. [2024-06-21 18:36:29,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 469 transitions, 5656 flow [2024-06-21 18:36:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:36:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:36:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 18:36:29,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-21 18:36:29,886 INFO L175 Difference]: Start difference. First operand has 484 places, 448 transitions, 4290 flow. Second operand 12 states and 134 transitions. [2024-06-21 18:36:29,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 469 transitions, 5656 flow [2024-06-21 18:36:31,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 469 transitions, 5598 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 18:36:31,512 INFO L231 Difference]: Finished difference. Result has 485 places, 452 transitions, 4341 flow [2024-06-21 18:36:31,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4341, PETRI_PLACES=485, PETRI_TRANSITIONS=452} [2024-06-21 18:36:31,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-21 18:36:31,513 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 452 transitions, 4341 flow [2024-06-21 18:36:31,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:31,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:31,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:31,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 18:36:31,513 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:31,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:31,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1317016853, now seen corresponding path program 1 times [2024-06-21 18:36:31,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:31,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887828407] [2024-06-21 18:36:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:31,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:32,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887828407] [2024-06-21 18:36:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887828407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100045709] [2024-06-21 18:36:32,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:33,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:33,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 452 transitions, 4341 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:33,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:33,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:33,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:33,763 INFO L124 PetriNetUnfolderBase]: 943/1628 cut-off events. [2024-06-21 18:36:33,763 INFO L125 PetriNetUnfolderBase]: For 463021/463021 co-relation queries the response was YES. [2024-06-21 18:36:33,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 1628 events. 943/1628 cut-off events. For 463021/463021 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 8824 event pairs, 190 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 13294. Up to 1581 conditions per place. [2024-06-21 18:36:33,784 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 447 selfloop transitions, 20 changer transitions 0/469 dead transitions. [2024-06-21 18:36:33,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 469 transitions, 5351 flow [2024-06-21 18:36:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:36:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:36:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 18:36:33,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-21 18:36:33,785 INFO L175 Difference]: Start difference. First operand has 485 places, 452 transitions, 4341 flow. Second operand 12 states and 127 transitions. [2024-06-21 18:36:33,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 469 transitions, 5351 flow [2024-06-21 18:36:35,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 469 transitions, 5298 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 18:36:35,574 INFO L231 Difference]: Finished difference. Result has 489 places, 454 transitions, 4367 flow [2024-06-21 18:36:35,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4367, PETRI_PLACES=489, PETRI_TRANSITIONS=454} [2024-06-21 18:36:35,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-21 18:36:35,574 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 454 transitions, 4367 flow [2024-06-21 18:36:35,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:35,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:35,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:35,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 18:36:35,575 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:35,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1317021813, now seen corresponding path program 3 times [2024-06-21 18:36:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:35,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761311851] [2024-06-21 18:36:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:35,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:37,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761311851] [2024-06-21 18:36:37,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761311851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:37,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:37,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:36:37,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688876345] [2024-06-21 18:36:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:36:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:36:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:36:37,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:37,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 454 transitions, 4367 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:37,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:37,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:37,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:38,224 INFO L124 PetriNetUnfolderBase]: 940/1623 cut-off events. [2024-06-21 18:36:38,224 INFO L125 PetriNetUnfolderBase]: For 438775/438775 co-relation queries the response was YES. [2024-06-21 18:36:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13201 conditions, 1623 events. 940/1623 cut-off events. For 438775/438775 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 8816 event pairs, 189 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 12978. Up to 1576 conditions per place. [2024-06-21 18:36:38,251 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 448 selfloop transitions, 19 changer transitions 0/469 dead transitions. [2024-06-21 18:36:38,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 469 transitions, 5341 flow [2024-06-21 18:36:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:36:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:36:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 18:36:38,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 18:36:38,253 INFO L175 Difference]: Start difference. First operand has 489 places, 454 transitions, 4367 flow. Second operand 12 states and 126 transitions. [2024-06-21 18:36:38,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 469 transitions, 5341 flow [2024-06-21 18:36:40,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 469 transitions, 5264 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:40,082 INFO L231 Difference]: Finished difference. Result has 491 places, 454 transitions, 4332 flow [2024-06-21 18:36:40,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4332, PETRI_PLACES=491, PETRI_TRANSITIONS=454} [2024-06-21 18:36:40,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 460 predicate places. [2024-06-21 18:36:40,083 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 454 transitions, 4332 flow [2024-06-21 18:36:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:40,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:40,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:40,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 18:36:40,084 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:40,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1317021689, now seen corresponding path program 2 times [2024-06-21 18:36:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:40,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786610283] [2024-06-21 18:36:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:40,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786610283] [2024-06-21 18:36:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786610283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537707955] [2024-06-21 18:36:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:41,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:41,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 454 transitions, 4332 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:41,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:41,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:41,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:42,608 INFO L124 PetriNetUnfolderBase]: 943/1628 cut-off events. [2024-06-21 18:36:42,608 INFO L125 PetriNetUnfolderBase]: For 429626/429626 co-relation queries the response was YES. [2024-06-21 18:36:42,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13198 conditions, 1628 events. 943/1628 cut-off events. For 429626/429626 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 8856 event pairs, 189 based on Foata normal form. 1/1628 useless extension candidates. Maximal degree in co-relation 12974. Up to 1577 conditions per place. [2024-06-21 18:36:42,633 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 446 selfloop transitions, 23 changer transitions 0/471 dead transitions. [2024-06-21 18:36:42,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 471 transitions, 5676 flow [2024-06-21 18:36:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:36:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:36:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 18:36:42,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 18:36:42,635 INFO L175 Difference]: Start difference. First operand has 491 places, 454 transitions, 4332 flow. Second operand 11 states and 123 transitions. [2024-06-21 18:36:42,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 471 transitions, 5676 flow [2024-06-21 18:36:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 471 transitions, 5638 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:44,422 INFO L231 Difference]: Finished difference. Result has 492 places, 456 transitions, 4367 flow [2024-06-21 18:36:44,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4367, PETRI_PLACES=492, PETRI_TRANSITIONS=456} [2024-06-21 18:36:44,422 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-21 18:36:44,422 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 456 transitions, 4367 flow [2024-06-21 18:36:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:44,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:44,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:44,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 18:36:44,423 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:44,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1317017039, now seen corresponding path program 3 times [2024-06-21 18:36:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:44,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432859589] [2024-06-21 18:36:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:44,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432859589] [2024-06-21 18:36:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432859589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966595146] [2024-06-21 18:36:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:46,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:46,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:46,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:46,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 456 transitions, 4367 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:46,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:46,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:46,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:46,842 INFO L124 PetriNetUnfolderBase]: 941/1625 cut-off events. [2024-06-21 18:36:46,842 INFO L125 PetriNetUnfolderBase]: For 419728/419728 co-relation queries the response was YES. [2024-06-21 18:36:46,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13047 conditions, 1625 events. 941/1625 cut-off events. For 419728/419728 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 8836 event pairs, 189 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 12822. Up to 1581 conditions per place. [2024-06-21 18:36:46,868 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 448 selfloop transitions, 20 changer transitions 0/470 dead transitions. [2024-06-21 18:36:46,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 470 transitions, 5341 flow [2024-06-21 18:36:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:36:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:36:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 18:36:46,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 18:36:46,869 INFO L175 Difference]: Start difference. First operand has 492 places, 456 transitions, 4367 flow. Second operand 11 states and 120 transitions. [2024-06-21 18:36:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 470 transitions, 5341 flow [2024-06-21 18:36:48,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 470 transitions, 5268 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 18:36:48,627 INFO L231 Difference]: Finished difference. Result has 494 places, 456 transitions, 4339 flow [2024-06-21 18:36:48,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4339, PETRI_PLACES=494, PETRI_TRANSITIONS=456} [2024-06-21 18:36:48,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 463 predicate places. [2024-06-21 18:36:48,628 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 456 transitions, 4339 flow [2024-06-21 18:36:48,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:48,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:48,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:48,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 18:36:48,628 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:48,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1511936623, now seen corresponding path program 4 times [2024-06-21 18:36:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387566832] [2024-06-21 18:36:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:48,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:50,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387566832] [2024-06-21 18:36:50,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387566832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:50,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:50,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:36:50,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454737191] [2024-06-21 18:36:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:50,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:36:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:36:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:36:50,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:50,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 456 transitions, 4339 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:50,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:50,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:50,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:51,221 INFO L124 PetriNetUnfolderBase]: 944/1630 cut-off events. [2024-06-21 18:36:51,221 INFO L125 PetriNetUnfolderBase]: For 424563/424563 co-relation queries the response was YES. [2024-06-21 18:36:51,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 1630 events. 944/1630 cut-off events. For 424563/424563 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 8882 event pairs, 191 based on Foata normal form. 1/1630 useless extension candidates. Maximal degree in co-relation 12854. Up to 1442 conditions per place. [2024-06-21 18:36:51,240 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 383 selfloop transitions, 86 changer transitions 0/471 dead transitions. [2024-06-21 18:36:51,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 471 transitions, 5339 flow [2024-06-21 18:36:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:36:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:36:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 18:36:51,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 18:36:51,242 INFO L175 Difference]: Start difference. First operand has 494 places, 456 transitions, 4339 flow. Second operand 12 states and 137 transitions. [2024-06-21 18:36:51,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 471 transitions, 5339 flow [2024-06-21 18:36:53,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 471 transitions, 5294 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:53,065 INFO L231 Difference]: Finished difference. Result has 496 places, 458 transitions, 4503 flow [2024-06-21 18:36:53,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4503, PETRI_PLACES=496, PETRI_TRANSITIONS=458} [2024-06-21 18:36:53,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 465 predicate places. [2024-06-21 18:36:53,066 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 458 transitions, 4503 flow [2024-06-21 18:36:53,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:53,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:53,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:53,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 18:36:53,066 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:53,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1201725683, now seen corresponding path program 2 times [2024-06-21 18:36:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925683080] [2024-06-21 18:36:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:53,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:54,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925683080] [2024-06-21 18:36:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925683080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:54,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147521949] [2024-06-21 18:36:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:54,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:54,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:54,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 458 transitions, 4503 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:54,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:54,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:54,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:55,452 INFO L124 PetriNetUnfolderBase]: 970/1672 cut-off events. [2024-06-21 18:36:55,452 INFO L125 PetriNetUnfolderBase]: For 505930/505930 co-relation queries the response was YES. [2024-06-21 18:36:55,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14239 conditions, 1672 events. 970/1672 cut-off events. For 505930/505930 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9137 event pairs, 175 based on Foata normal form. 2/1673 useless extension candidates. Maximal degree in co-relation 14012. Up to 1116 conditions per place. [2024-06-21 18:36:55,479 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 374 selfloop transitions, 112 changer transitions 0/488 dead transitions. [2024-06-21 18:36:55,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 488 transitions, 6379 flow [2024-06-21 18:36:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:36:55,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:36:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 18:36:55,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 18:36:55,480 INFO L175 Difference]: Start difference. First operand has 496 places, 458 transitions, 4503 flow. Second operand 12 states and 151 transitions. [2024-06-21 18:36:55,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 488 transitions, 6379 flow [2024-06-21 18:36:57,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 488 transitions, 6186 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:57,630 INFO L231 Difference]: Finished difference. Result has 498 places, 464 transitions, 4645 flow [2024-06-21 18:36:57,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4310, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4645, PETRI_PLACES=498, PETRI_TRANSITIONS=464} [2024-06-21 18:36:57,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-21 18:36:57,630 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 464 transitions, 4645 flow [2024-06-21 18:36:57,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:57,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:57,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 18:36:57,631 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:36:57,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1201546193, now seen corresponding path program 3 times [2024-06-21 18:36:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360482831] [2024-06-21 18:36:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:59,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:59,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360482831] [2024-06-21 18:36:59,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360482831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:59,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:59,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:36:59,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506888876] [2024-06-21 18:36:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:59,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:36:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:36:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:36:59,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:36:59,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 464 transitions, 4645 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:36:59,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:59,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:36:59,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:00,050 INFO L124 PetriNetUnfolderBase]: 976/1682 cut-off events. [2024-06-21 18:37:00,050 INFO L125 PetriNetUnfolderBase]: For 512319/512319 co-relation queries the response was YES. [2024-06-21 18:37:00,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14445 conditions, 1682 events. 976/1682 cut-off events. For 512319/512319 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9210 event pairs, 176 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 14217. Up to 1122 conditions per place. [2024-06-21 18:37:00,076 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 370 selfloop transitions, 117 changer transitions 0/489 dead transitions. [2024-06-21 18:37:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 489 transitions, 6455 flow [2024-06-21 18:37:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 18:37:00,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:37:00,078 INFO L175 Difference]: Start difference. First operand has 498 places, 464 transitions, 4645 flow. Second operand 12 states and 148 transitions. [2024-06-21 18:37:00,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 489 transitions, 6455 flow [2024-06-21 18:37:02,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 489 transitions, 6325 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 18:37:02,213 INFO L231 Difference]: Finished difference. Result has 503 places, 466 transitions, 4792 flow [2024-06-21 18:37:02,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4521, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4792, PETRI_PLACES=503, PETRI_TRANSITIONS=466} [2024-06-21 18:37:02,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-21 18:37:02,214 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 466 transitions, 4792 flow [2024-06-21 18:37:02,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:02,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:02,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 18:37:02,215 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:02,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1201730519, now seen corresponding path program 5 times [2024-06-21 18:37:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:02,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178982407] [2024-06-21 18:37:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178982407] [2024-06-21 18:37:03,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178982407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:03,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:03,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:03,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694162673] [2024-06-21 18:37:03,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:03,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:03,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:03,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 466 transitions, 4792 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:03,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:03,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:03,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:04,720 INFO L124 PetriNetUnfolderBase]: 984/1695 cut-off events. [2024-06-21 18:37:04,721 INFO L125 PetriNetUnfolderBase]: For 518289/518289 co-relation queries the response was YES. [2024-06-21 18:37:04,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14927 conditions, 1695 events. 984/1695 cut-off events. For 518289/518289 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9267 event pairs, 199 based on Foata normal form. 1/1695 useless extension candidates. Maximal degree in co-relation 14697. Up to 1497 conditions per place. [2024-06-21 18:37:04,747 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 391 selfloop transitions, 91 changer transitions 0/484 dead transitions. [2024-06-21 18:37:04,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 484 transitions, 6210 flow [2024-06-21 18:37:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:37:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:37:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 18:37:04,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 18:37:04,749 INFO L175 Difference]: Start difference. First operand has 503 places, 466 transitions, 4792 flow. Second operand 11 states and 133 transitions. [2024-06-21 18:37:04,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 484 transitions, 6210 flow [2024-06-21 18:37:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 484 transitions, 5963 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 18:37:07,145 INFO L231 Difference]: Finished difference. Result has 505 places, 470 transitions, 4800 flow [2024-06-21 18:37:07,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4800, PETRI_PLACES=505, PETRI_TRANSITIONS=470} [2024-06-21 18:37:07,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-21 18:37:07,146 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 470 transitions, 4800 flow [2024-06-21 18:37:07,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:07,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:07,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 18:37:07,147 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:07,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1511931849, now seen corresponding path program 4 times [2024-06-21 18:37:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:07,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119929279] [2024-06-21 18:37:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:08,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119929279] [2024-06-21 18:37:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119929279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489036131] [2024-06-21 18:37:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:08,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:08,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:08,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:08,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 470 transitions, 4800 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:08,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:08,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:08,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:09,713 INFO L124 PetriNetUnfolderBase]: 988/1703 cut-off events. [2024-06-21 18:37:09,714 INFO L125 PetriNetUnfolderBase]: For 540013/540013 co-relation queries the response was YES. [2024-06-21 18:37:09,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14924 conditions, 1703 events. 988/1703 cut-off events. For 540013/540013 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9356 event pairs, 196 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 14693. Up to 1614 conditions per place. [2024-06-21 18:37:09,735 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 443 selfloop transitions, 40 changer transitions 0/485 dead transitions. [2024-06-21 18:37:09,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 485 transitions, 5828 flow [2024-06-21 18:37:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:37:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:37:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 18:37:09,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 18:37:09,736 INFO L175 Difference]: Start difference. First operand has 505 places, 470 transitions, 4800 flow. Second operand 11 states and 125 transitions. [2024-06-21 18:37:09,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 485 transitions, 5828 flow [2024-06-21 18:37:12,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 485 transitions, 5680 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 18:37:12,178 INFO L231 Difference]: Finished difference. Result has 509 places, 471 transitions, 4764 flow [2024-06-21 18:37:12,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4764, PETRI_PLACES=509, PETRI_TRANSITIONS=471} [2024-06-21 18:37:12,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-21 18:37:12,179 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 471 transitions, 4764 flow [2024-06-21 18:37:12,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:12,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:12,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:12,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 18:37:12,179 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:12,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1512109603, now seen corresponding path program 6 times [2024-06-21 18:37:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309931910] [2024-06-21 18:37:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309931910] [2024-06-21 18:37:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309931910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:37:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632983105] [2024-06-21 18:37:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:13,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:37:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:37:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:37:14,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:14,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 471 transitions, 4764 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:14,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:14,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:14,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:14,720 INFO L124 PetriNetUnfolderBase]: 986/1700 cut-off events. [2024-06-21 18:37:14,721 INFO L125 PetriNetUnfolderBase]: For 513832/513832 co-relation queries the response was YES. [2024-06-21 18:37:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14758 conditions, 1700 events. 986/1700 cut-off events. For 513832/513832 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9324 event pairs, 197 based on Foata normal form. 1/1700 useless extension candidates. Maximal degree in co-relation 14525. Up to 1512 conditions per place. [2024-06-21 18:37:14,748 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 395 selfloop transitions, 87 changer transitions 0/484 dead transitions. [2024-06-21 18:37:14,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 484 transitions, 5762 flow [2024-06-21 18:37:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 18:37:14,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 18:37:14,749 INFO L175 Difference]: Start difference. First operand has 509 places, 471 transitions, 4764 flow. Second operand 12 states and 136 transitions. [2024-06-21 18:37:14,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 484 transitions, 5762 flow [2024-06-21 18:37:16,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 484 transitions, 5650 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 18:37:16,946 INFO L231 Difference]: Finished difference. Result has 512 places, 471 transitions, 4831 flow [2024-06-21 18:37:16,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4831, PETRI_PLACES=512, PETRI_TRANSITIONS=471} [2024-06-21 18:37:16,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-21 18:37:16,947 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 471 transitions, 4831 flow [2024-06-21 18:37:16,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:16,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:16,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:16,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 18:37:16,948 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:16,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1512109789, now seen corresponding path program 4 times [2024-06-21 18:37:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:16,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605592383] [2024-06-21 18:37:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:18,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605592383] [2024-06-21 18:37:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605592383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:18,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:18,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688093750] [2024-06-21 18:37:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:18,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:18,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:18,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:18,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 471 transitions, 4831 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:18,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:18,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:18,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:19,191 INFO L124 PetriNetUnfolderBase]: 982/1694 cut-off events. [2024-06-21 18:37:19,191 INFO L125 PetriNetUnfolderBase]: For 503183/503183 co-relation queries the response was YES. [2024-06-21 18:37:19,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14438 conditions, 1694 events. 982/1694 cut-off events. For 503183/503183 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9292 event pairs, 172 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 14204. Up to 1137 conditions per place. [2024-06-21 18:37:19,219 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 377 selfloop transitions, 115 changer transitions 0/494 dead transitions. [2024-06-21 18:37:19,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 494 transitions, 6275 flow [2024-06-21 18:37:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 18:37:19,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 18:37:19,220 INFO L175 Difference]: Start difference. First operand has 512 places, 471 transitions, 4831 flow. Second operand 12 states and 149 transitions. [2024-06-21 18:37:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 494 transitions, 6275 flow [2024-06-21 18:37:21,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 494 transitions, 6069 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-21 18:37:21,471 INFO L231 Difference]: Finished difference. Result has 513 places, 471 transitions, 4860 flow [2024-06-21 18:37:21,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4860, PETRI_PLACES=513, PETRI_TRANSITIONS=471} [2024-06-21 18:37:21,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 482 predicate places. [2024-06-21 18:37:21,472 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 471 transitions, 4860 flow [2024-06-21 18:37:21,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:21,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:21,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 18:37:21,472 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:21,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1029411381, now seen corresponding path program 1 times [2024-06-21 18:37:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:21,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198069592] [2024-06-21 18:37:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:21,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198069592] [2024-06-21 18:37:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198069592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:23,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:37:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953163063] [2024-06-21 18:37:23,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:37:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:37:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:37:23,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:23,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 471 transitions, 4860 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:23,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:23,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:23,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:23,971 INFO L124 PetriNetUnfolderBase]: 986/1702 cut-off events. [2024-06-21 18:37:23,971 INFO L125 PetriNetUnfolderBase]: For 509081/509081 co-relation queries the response was YES. [2024-06-21 18:37:23,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14567 conditions, 1702 events. 986/1702 cut-off events. For 509081/509081 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9356 event pairs, 177 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 14332. Up to 1528 conditions per place. [2024-06-21 18:37:23,998 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 428 selfloop transitions, 60 changer transitions 0/490 dead transitions. [2024-06-21 18:37:23,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 490 transitions, 5918 flow [2024-06-21 18:37:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:37:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:37:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 18:37:24,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 18:37:24,000 INFO L175 Difference]: Start difference. First operand has 513 places, 471 transitions, 4860 flow. Second operand 11 states and 127 transitions. [2024-06-21 18:37:24,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 490 transitions, 5918 flow [2024-06-21 18:37:26,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 490 transitions, 5669 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-21 18:37:26,098 INFO L231 Difference]: Finished difference. Result has 512 places, 472 transitions, 4749 flow [2024-06-21 18:37:26,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4749, PETRI_PLACES=512, PETRI_TRANSITIONS=472} [2024-06-21 18:37:26,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-21 18:37:26,098 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 472 transitions, 4749 flow [2024-06-21 18:37:26,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:26,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:26,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:26,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 18:37:26,099 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:26,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1029650949, now seen corresponding path program 5 times [2024-06-21 18:37:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950723964] [2024-06-21 18:37:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950723964] [2024-06-21 18:37:27,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950723964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:27,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:27,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:27,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824215682] [2024-06-21 18:37:27,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:27,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:27,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:27,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:27,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 472 transitions, 4749 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:27,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:27,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:27,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:28,480 INFO L124 PetriNetUnfolderBase]: 1022/1760 cut-off events. [2024-06-21 18:37:28,480 INFO L125 PetriNetUnfolderBase]: For 614138/614138 co-relation queries the response was YES. [2024-06-21 18:37:28,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15961 conditions, 1760 events. 1022/1760 cut-off events. For 614138/614138 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 9747 event pairs, 187 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 15725. Up to 1178 conditions per place. [2024-06-21 18:37:28,508 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 393 selfloop transitions, 107 changer transitions 0/502 dead transitions. [2024-06-21 18:37:28,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 502 transitions, 7435 flow [2024-06-21 18:37:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 18:37:28,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 18:37:28,509 INFO L175 Difference]: Start difference. First operand has 512 places, 472 transitions, 4749 flow. Second operand 12 states and 153 transitions. [2024-06-21 18:37:28,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 502 transitions, 7435 flow [2024-06-21 18:37:31,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 502 transitions, 7258 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 18:37:31,200 INFO L231 Difference]: Finished difference. Result has 512 places, 480 transitions, 4935 flow [2024-06-21 18:37:31,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4935, PETRI_PLACES=512, PETRI_TRANSITIONS=480} [2024-06-21 18:37:31,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-21 18:37:31,200 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 480 transitions, 4935 flow [2024-06-21 18:37:31,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:31,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:31,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 18:37:31,201 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:31,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1029420309, now seen corresponding path program 6 times [2024-06-21 18:37:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021717006] [2024-06-21 18:37:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:33,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021717006] [2024-06-21 18:37:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021717006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:33,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:33,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:33,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066648563] [2024-06-21 18:37:33,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:33,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:33,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:33,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 480 transitions, 4935 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:33,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:33,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:33,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:34,036 INFO L124 PetriNetUnfolderBase]: 1018/1754 cut-off events. [2024-06-21 18:37:34,036 INFO L125 PetriNetUnfolderBase]: For 587725/587725 co-relation queries the response was YES. [2024-06-21 18:37:34,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15661 conditions, 1754 events. 1018/1754 cut-off events. For 587725/587725 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 9694 event pairs, 189 based on Foata normal form. 2/1755 useless extension candidates. Maximal degree in co-relation 15424. Up to 1175 conditions per place. [2024-06-21 18:37:34,065 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 383 selfloop transitions, 114 changer transitions 0/499 dead transitions. [2024-06-21 18:37:34,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 499 transitions, 6735 flow [2024-06-21 18:37:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 18:37:34,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:37:34,066 INFO L175 Difference]: Start difference. First operand has 512 places, 480 transitions, 4935 flow. Second operand 12 states and 148 transitions. [2024-06-21 18:37:34,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 499 transitions, 6735 flow [2024-06-21 18:37:36,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 499 transitions, 6561 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 18:37:36,755 INFO L231 Difference]: Finished difference. Result has 518 places, 480 transitions, 4994 flow [2024-06-21 18:37:36,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4761, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4994, PETRI_PLACES=518, PETRI_TRANSITIONS=480} [2024-06-21 18:37:36,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-21 18:37:36,756 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 480 transitions, 4994 flow [2024-06-21 18:37:36,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:36,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:36,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:36,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 18:37:36,757 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:36,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1035913569, now seen corresponding path program 7 times [2024-06-21 18:37:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022824717] [2024-06-21 18:37:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:38,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:38,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022824717] [2024-06-21 18:37:38,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022824717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:38,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:38,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406498139] [2024-06-21 18:37:38,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:38,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:38,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:38,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:38,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 480 transitions, 4994 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:38,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:38,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:38,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:39,202 INFO L124 PetriNetUnfolderBase]: 1034/1780 cut-off events. [2024-06-21 18:37:39,203 INFO L125 PetriNetUnfolderBase]: For 628552/628552 co-relation queries the response was YES. [2024-06-21 18:37:39,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16235 conditions, 1780 events. 1034/1780 cut-off events. For 628552/628552 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 9884 event pairs, 187 based on Foata normal form. 2/1781 useless extension candidates. Maximal degree in co-relation 15997. Up to 1190 conditions per place. [2024-06-21 18:37:39,229 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 397 selfloop transitions, 108 changer transitions 0/507 dead transitions. [2024-06-21 18:37:39,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 507 transitions, 7650 flow [2024-06-21 18:37:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:37:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:37:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 18:37:39,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-21 18:37:39,230 INFO L175 Difference]: Start difference. First operand has 518 places, 480 transitions, 4994 flow. Second operand 11 states and 150 transitions. [2024-06-21 18:37:39,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 507 transitions, 7650 flow [2024-06-21 18:37:41,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 507 transitions, 7430 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 18:37:41,810 INFO L231 Difference]: Finished difference. Result has 519 places, 484 transitions, 5075 flow [2024-06-21 18:37:41,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5075, PETRI_PLACES=519, PETRI_TRANSITIONS=484} [2024-06-21 18:37:41,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2024-06-21 18:37:41,811 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 484 transitions, 5075 flow [2024-06-21 18:37:41,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:41,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:41,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:41,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 18:37:41,811 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:41,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1677748737, now seen corresponding path program 7 times [2024-06-21 18:37:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778910820] [2024-06-21 18:37:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:43,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778910820] [2024-06-21 18:37:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778910820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:37:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977521548] [2024-06-21 18:37:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:37:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:37:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:37:43,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:43,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 484 transitions, 5075 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:43,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:43,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:43,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:44,450 INFO L124 PetriNetUnfolderBase]: 1037/1785 cut-off events. [2024-06-21 18:37:44,451 INFO L125 PetriNetUnfolderBase]: For 618505/618505 co-relation queries the response was YES. [2024-06-21 18:37:44,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16293 conditions, 1785 events. 1037/1785 cut-off events. For 618505/618505 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 9888 event pairs, 207 based on Foata normal form. 1/1785 useless extension candidates. Maximal degree in co-relation 16054. Up to 1597 conditions per place. [2024-06-21 18:37:44,474 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 417 selfloop transitions, 79 changer transitions 0/498 dead transitions. [2024-06-21 18:37:44,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 498 transitions, 6133 flow [2024-06-21 18:37:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 18:37:44,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 18:37:44,475 INFO L175 Difference]: Start difference. First operand has 519 places, 484 transitions, 5075 flow. Second operand 12 states and 138 transitions. [2024-06-21 18:37:44,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 498 transitions, 6133 flow [2024-06-21 18:37:47,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 498 transitions, 5876 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 18:37:47,082 INFO L231 Difference]: Finished difference. Result has 523 places, 486 transitions, 5021 flow [2024-06-21 18:37:47,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4818, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5021, PETRI_PLACES=523, PETRI_TRANSITIONS=486} [2024-06-21 18:37:47,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 492 predicate places. [2024-06-21 18:37:47,082 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5021 flow [2024-06-21 18:37:47,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:47,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:47,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:47,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 18:37:47,083 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:47,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1684004847, now seen corresponding path program 8 times [2024-06-21 18:37:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:47,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844418041] [2024-06-21 18:37:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844418041] [2024-06-21 18:37:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844418041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:48,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:48,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:37:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736585254] [2024-06-21 18:37:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:48,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:37:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:37:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:37:48,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:48,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 486 transitions, 5021 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:48,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:48,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:49,504 INFO L124 PetriNetUnfolderBase]: 1040/1790 cut-off events. [2024-06-21 18:37:49,505 INFO L125 PetriNetUnfolderBase]: For 624172/624172 co-relation queries the response was YES. [2024-06-21 18:37:49,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16261 conditions, 1790 events. 1040/1790 cut-off events. For 624172/624172 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9926 event pairs, 205 based on Foata normal form. 1/1790 useless extension candidates. Maximal degree in co-relation 16021. Up to 1602 conditions per place. [2024-06-21 18:37:49,534 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 416 selfloop transitions, 82 changer transitions 0/500 dead transitions. [2024-06-21 18:37:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 500 transitions, 6087 flow [2024-06-21 18:37:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 18:37:49,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 18:37:49,536 INFO L175 Difference]: Start difference. First operand has 523 places, 486 transitions, 5021 flow. Second operand 12 states and 136 transitions. [2024-06-21 18:37:49,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 500 transitions, 6087 flow [2024-06-21 18:37:52,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 500 transitions, 5900 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 18:37:52,148 INFO L231 Difference]: Finished difference. Result has 525 places, 488 transitions, 5047 flow [2024-06-21 18:37:52,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5047, PETRI_PLACES=525, PETRI_TRANSITIONS=488} [2024-06-21 18:37:52,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 494 predicate places. [2024-06-21 18:37:52,149 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 488 transitions, 5047 flow [2024-06-21 18:37:52,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:52,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:52,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 18:37:52,149 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:52,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1684005033, now seen corresponding path program 8 times [2024-06-21 18:37:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091718006] [2024-06-21 18:37:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091718006] [2024-06-21 18:37:53,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091718006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:53,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:53,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:53,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367092333] [2024-06-21 18:37:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:53,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:53,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:53,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:53,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 488 transitions, 5047 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:53,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:53,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:53,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:54,450 INFO L124 PetriNetUnfolderBase]: 1036/1784 cut-off events. [2024-06-21 18:37:54,451 INFO L125 PetriNetUnfolderBase]: For 613165/613165 co-relation queries the response was YES. [2024-06-21 18:37:54,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15893 conditions, 1784 events. 1036/1784 cut-off events. For 613165/613165 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9890 event pairs, 187 based on Foata normal form. 2/1785 useless extension candidates. Maximal degree in co-relation 15652. Up to 1197 conditions per place. [2024-06-21 18:37:54,481 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 394 selfloop transitions, 112 changer transitions 0/508 dead transitions. [2024-06-21 18:37:54,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 508 transitions, 6889 flow [2024-06-21 18:37:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 18:37:54,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:37:54,483 INFO L175 Difference]: Start difference. First operand has 525 places, 488 transitions, 5047 flow. Second operand 12 states and 150 transitions. [2024-06-21 18:37:54,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 508 transitions, 6889 flow [2024-06-21 18:37:57,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 508 transitions, 6672 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-21 18:37:57,290 INFO L231 Difference]: Finished difference. Result has 527 places, 488 transitions, 5059 flow [2024-06-21 18:37:57,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4830, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5059, PETRI_PLACES=527, PETRI_TRANSITIONS=488} [2024-06-21 18:37:57,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 496 predicate places. [2024-06-21 18:37:57,291 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 488 transitions, 5059 flow [2024-06-21 18:37:57,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:57,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:57,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:57,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 18:37:57,291 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:37:57,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:57,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1677755433, now seen corresponding path program 9 times [2024-06-21 18:37:57,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:57,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944620713] [2024-06-21 18:37:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:57,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:58,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944620713] [2024-06-21 18:37:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944620713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:58,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412858989] [2024-06-21 18:37:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:58,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:58,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:58,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:59,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:37:59,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 488 transitions, 5059 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:37:59,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:59,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:37:59,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:59,883 INFO L124 PetriNetUnfolderBase]: 1032/1778 cut-off events. [2024-06-21 18:37:59,883 INFO L125 PetriNetUnfolderBase]: For 584534/584534 co-relation queries the response was YES. [2024-06-21 18:37:59,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15565 conditions, 1778 events. 1032/1778 cut-off events. For 584534/584534 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9876 event pairs, 188 based on Foata normal form. 2/1779 useless extension candidates. Maximal degree in co-relation 15323. Up to 1194 conditions per place. [2024-06-21 18:37:59,913 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 397 selfloop transitions, 109 changer transitions 0/508 dead transitions. [2024-06-21 18:37:59,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 508 transitions, 6905 flow [2024-06-21 18:37:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 18:37:59,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 18:37:59,914 INFO L175 Difference]: Start difference. First operand has 527 places, 488 transitions, 5059 flow. Second operand 12 states and 152 transitions. [2024-06-21 18:37:59,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 508 transitions, 6905 flow [2024-06-21 18:38:02,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 508 transitions, 6654 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-21 18:38:02,461 INFO L231 Difference]: Finished difference. Result has 528 places, 488 transitions, 5031 flow [2024-06-21 18:38:02,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4808, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5031, PETRI_PLACES=528, PETRI_TRANSITIONS=488} [2024-06-21 18:38:02,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 497 predicate places. [2024-06-21 18:38:02,462 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 488 transitions, 5031 flow [2024-06-21 18:38:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:02,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:02,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:02,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 18:38:02,462 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:02,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1677575757, now seen corresponding path program 9 times [2024-06-21 18:38:02,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:02,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948296654] [2024-06-21 18:38:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:02,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:04,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:04,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948296654] [2024-06-21 18:38:04,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948296654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:04,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:04,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:38:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558526717] [2024-06-21 18:38:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:04,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:38:04,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:38:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:38:04,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:04,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 488 transitions, 5031 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:04,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:04,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:04,886 INFO L124 PetriNetUnfolderBase]: 1035/1783 cut-off events. [2024-06-21 18:38:04,886 INFO L125 PetriNetUnfolderBase]: For 572964/572964 co-relation queries the response was YES. [2024-06-21 18:38:04,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15611 conditions, 1783 events. 1035/1783 cut-off events. For 572964/572964 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 9897 event pairs, 205 based on Foata normal form. 1/1783 useless extension candidates. Maximal degree in co-relation 15368. Up to 1595 conditions per place. [2024-06-21 18:38:04,916 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 420 selfloop transitions, 80 changer transitions 0/502 dead transitions. [2024-06-21 18:38:04,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 502 transitions, 6105 flow [2024-06-21 18:38:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:38:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:38:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 18:38:04,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 18:38:04,917 INFO L175 Difference]: Start difference. First operand has 528 places, 488 transitions, 5031 flow. Second operand 12 states and 137 transitions. [2024-06-21 18:38:04,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 502 transitions, 6105 flow [2024-06-21 18:38:07,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 502 transitions, 5860 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:38:07,484 INFO L231 Difference]: Finished difference. Result has 529 places, 490 transitions, 4999 flow [2024-06-21 18:38:07,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4999, PETRI_PLACES=529, PETRI_TRANSITIONS=490} [2024-06-21 18:38:07,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 498 predicate places. [2024-06-21 18:38:07,484 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 490 transitions, 4999 flow [2024-06-21 18:38:07,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:07,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:07,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:07,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 18:38:07,485 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:07,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:07,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1677575943, now seen corresponding path program 10 times [2024-06-21 18:38:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:07,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962936212] [2024-06-21 18:38:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:07,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:08,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:08,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962936212] [2024-06-21 18:38:08,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962936212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:08,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:08,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134367586] [2024-06-21 18:38:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:09,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:09,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 490 transitions, 4999 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:09,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:09,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:09,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:09,838 INFO L124 PetriNetUnfolderBase]: 1031/1777 cut-off events. [2024-06-21 18:38:09,838 INFO L125 PetriNetUnfolderBase]: For 560311/560311 co-relation queries the response was YES. [2024-06-21 18:38:09,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15143 conditions, 1777 events. 1031/1777 cut-off events. For 560311/560311 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 9883 event pairs, 180 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 14899. Up to 1196 conditions per place. [2024-06-21 18:38:09,867 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 396 selfloop transitions, 111 changer transitions 0/509 dead transitions. [2024-06-21 18:38:09,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 509 transitions, 6473 flow [2024-06-21 18:38:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:38:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:38:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 18:38:09,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:38:09,868 INFO L175 Difference]: Start difference. First operand has 529 places, 490 transitions, 4999 flow. Second operand 12 states and 150 transitions. [2024-06-21 18:38:09,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 509 transitions, 6473 flow [2024-06-21 18:38:12,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 509 transitions, 6256 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-21 18:38:12,723 INFO L231 Difference]: Finished difference. Result has 531 places, 490 transitions, 5009 flow [2024-06-21 18:38:12,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5009, PETRI_PLACES=531, PETRI_TRANSITIONS=490} [2024-06-21 18:38:12,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-21 18:38:12,723 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 490 transitions, 5009 flow [2024-06-21 18:38:12,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:12,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:12,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:12,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 18:38:12,724 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:12,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1677570983, now seen corresponding path program 5 times [2024-06-21 18:38:12,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:12,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342667664] [2024-06-21 18:38:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342667664] [2024-06-21 18:38:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342667664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:14,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865925881] [2024-06-21 18:38:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:14,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:14,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:14,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 490 transitions, 5009 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:14,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:14,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:14,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:15,181 INFO L124 PetriNetUnfolderBase]: 1035/1785 cut-off events. [2024-06-21 18:38:15,182 INFO L125 PetriNetUnfolderBase]: For 566628/566628 co-relation queries the response was YES. [2024-06-21 18:38:15,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15284 conditions, 1785 events. 1035/1785 cut-off events. For 566628/566628 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 9952 event pairs, 203 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 15039. Up to 1696 conditions per place. [2024-06-21 18:38:15,206 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 464 selfloop transitions, 38 changer transitions 0/504 dead transitions. [2024-06-21 18:38:15,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 504 transitions, 6073 flow [2024-06-21 18:38:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:38:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:38:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 18:38:15,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 18:38:15,207 INFO L175 Difference]: Start difference. First operand has 531 places, 490 transitions, 5009 flow. Second operand 11 states and 125 transitions. [2024-06-21 18:38:15,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 504 transitions, 6073 flow [2024-06-21 18:38:18,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 504 transitions, 5833 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 18:38:18,114 INFO L231 Difference]: Finished difference. Result has 530 places, 491 transitions, 4879 flow [2024-06-21 18:38:18,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4879, PETRI_PLACES=530, PETRI_TRANSITIONS=491} [2024-06-21 18:38:18,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 499 predicate places. [2024-06-21 18:38:18,116 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 491 transitions, 4879 flow [2024-06-21 18:38:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:18,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:18,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:18,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 18:38:18,117 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:18,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1677571107, now seen corresponding path program 10 times [2024-06-21 18:38:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177217953] [2024-06-21 18:38:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177217953] [2024-06-21 18:38:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177217953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129650425] [2024-06-21 18:38:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:19,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:19,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 491 transitions, 4879 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:19,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:19,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:19,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:20,466 INFO L124 PetriNetUnfolderBase]: 1038/1790 cut-off events. [2024-06-21 18:38:20,467 INFO L125 PetriNetUnfolderBase]: For 553894/553894 co-relation queries the response was YES. [2024-06-21 18:38:20,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15181 conditions, 1790 events. 1038/1790 cut-off events. For 553894/553894 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 9990 event pairs, 200 based on Foata normal form. 1/1790 useless extension candidates. Maximal degree in co-relation 14935. Up to 1590 conditions per place. [2024-06-21 18:38:20,496 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 416 selfloop transitions, 87 changer transitions 0/505 dead transitions. [2024-06-21 18:38:20,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 505 transitions, 5963 flow [2024-06-21 18:38:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:38:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:38:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 18:38:20,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 18:38:20,498 INFO L175 Difference]: Start difference. First operand has 530 places, 491 transitions, 4879 flow. Second operand 11 states and 132 transitions. [2024-06-21 18:38:20,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 505 transitions, 5963 flow [2024-06-21 18:38:23,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 505 transitions, 5863 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 18:38:23,238 INFO L231 Difference]: Finished difference. Result has 532 places, 493 transitions, 5010 flow [2024-06-21 18:38:23,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5010, PETRI_PLACES=532, PETRI_TRANSITIONS=493} [2024-06-21 18:38:23,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 501 predicate places. [2024-06-21 18:38:23,239 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 493 transitions, 5010 flow [2024-06-21 18:38:23,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:23,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:23,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:23,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 18:38:23,239 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:23,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -63191517, now seen corresponding path program 11 times [2024-06-21 18:38:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:23,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468415903] [2024-06-21 18:38:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:23,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468415903] [2024-06-21 18:38:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468415903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:38:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385812895] [2024-06-21 18:38:24,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:24,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:38:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:38:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:38:25,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:25,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 493 transitions, 5010 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:25,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:25,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:25,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:25,666 INFO L124 PetriNetUnfolderBase]: 1041/1795 cut-off events. [2024-06-21 18:38:25,667 INFO L125 PetriNetUnfolderBase]: For 559231/559231 co-relation queries the response was YES. [2024-06-21 18:38:25,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15343 conditions, 1795 events. 1041/1795 cut-off events. For 559231/559231 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 10028 event pairs, 202 based on Foata normal form. 1/1795 useless extension candidates. Maximal degree in co-relation 15096. Up to 1607 conditions per place. [2024-06-21 18:38:25,712 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 427 selfloop transitions, 77 changer transitions 0/506 dead transitions. [2024-06-21 18:38:25,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 506 transitions, 6096 flow [2024-06-21 18:38:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:38:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:38:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 18:38:25,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 18:38:25,724 INFO L175 Difference]: Start difference. First operand has 532 places, 493 transitions, 5010 flow. Second operand 12 states and 138 transitions. [2024-06-21 18:38:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 506 transitions, 6096 flow [2024-06-21 18:38:28,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 506 transitions, 5881 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 18:38:28,802 INFO L231 Difference]: Finished difference. Result has 535 places, 495 transitions, 5010 flow [2024-06-21 18:38:28,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5010, PETRI_PLACES=535, PETRI_TRANSITIONS=495} [2024-06-21 18:38:28,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 504 predicate places. [2024-06-21 18:38:28,803 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 495 transitions, 5010 flow [2024-06-21 18:38:28,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:28,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:28,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:28,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 18:38:28,803 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:28,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1754592571, now seen corresponding path program 2 times [2024-06-21 18:38:28,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:28,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225547282] [2024-06-21 18:38:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:28,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:30,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225547282] [2024-06-21 18:38:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225547282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:30,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:30,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:38:30,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337678423] [2024-06-21 18:38:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:30,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:38:30,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:38:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:38:30,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:30,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 495 transitions, 5010 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:30,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:30,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:30,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:31,678 INFO L124 PetriNetUnfolderBase]: 1045/1803 cut-off events. [2024-06-21 18:38:31,679 INFO L125 PetriNetUnfolderBase]: For 583651/583651 co-relation queries the response was YES. [2024-06-21 18:38:31,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15378 conditions, 1803 events. 1045/1803 cut-off events. For 583651/583651 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10067 event pairs, 185 based on Foata normal form. 2/1804 useless extension candidates. Maximal degree in co-relation 15130. Up to 1629 conditions per place. [2024-06-21 18:38:31,770 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 455 selfloop transitions, 56 changer transitions 0/513 dead transitions. [2024-06-21 18:38:31,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 513 transitions, 6112 flow [2024-06-21 18:38:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:38:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:38:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 18:38:31,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-21 18:38:31,785 INFO L175 Difference]: Start difference. First operand has 535 places, 495 transitions, 5010 flow. Second operand 10 states and 121 transitions. [2024-06-21 18:38:31,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 513 transitions, 6112 flow [2024-06-21 18:38:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 513 transitions, 5913 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-21 18:38:34,764 INFO L231 Difference]: Finished difference. Result has 535 places, 496 transitions, 4943 flow [2024-06-21 18:38:34,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4943, PETRI_PLACES=535, PETRI_TRANSITIONS=496} [2024-06-21 18:38:34,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 504 predicate places. [2024-06-21 18:38:34,765 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 496 transitions, 4943 flow [2024-06-21 18:38:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:34,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:34,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 18:38:34,765 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:34,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 164716329, now seen corresponding path program 11 times [2024-06-21 18:38:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614053336] [2024-06-21 18:38:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614053336] [2024-06-21 18:38:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614053336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:36,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051888828] [2024-06-21 18:38:36,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:36,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:36,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:36,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 496 transitions, 4943 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:36,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:36,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:36,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:37,419 INFO L124 PetriNetUnfolderBase]: 1081/1861 cut-off events. [2024-06-21 18:38:37,419 INFO L125 PetriNetUnfolderBase]: For 704119/704119 co-relation queries the response was YES. [2024-06-21 18:38:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 1861 events. 1081/1861 cut-off events. For 704119/704119 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 10448 event pairs, 199 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 16673. Up to 1255 conditions per place. [2024-06-21 18:38:37,451 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 407 selfloop transitions, 116 changer transitions 0/525 dead transitions. [2024-06-21 18:38:37,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 525 transitions, 7783 flow [2024-06-21 18:38:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:38:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:38:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 18:38:37,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 18:38:37,453 INFO L175 Difference]: Start difference. First operand has 535 places, 496 transitions, 4943 flow. Second operand 12 states and 153 transitions. [2024-06-21 18:38:37,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 525 transitions, 7783 flow [2024-06-21 18:38:41,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 525 transitions, 7683 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 18:38:41,196 INFO L231 Difference]: Finished difference. Result has 541 places, 504 transitions, 5232 flow [2024-06-21 18:38:41,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4843, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5232, PETRI_PLACES=541, PETRI_TRANSITIONS=504} [2024-06-21 18:38:41,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 510 predicate places. [2024-06-21 18:38:41,196 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 504 transitions, 5232 flow [2024-06-21 18:38:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:41,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:41,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:41,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 18:38:41,197 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:41,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash 164946969, now seen corresponding path program 12 times [2024-06-21 18:38:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:41,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425343641] [2024-06-21 18:38:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:41,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425343641] [2024-06-21 18:38:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425343641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:42,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:42,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057204806] [2024-06-21 18:38:42,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:42,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:43,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:43,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 504 transitions, 5232 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:43,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:43,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:43,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:43,945 INFO L124 PetriNetUnfolderBase]: 1087/1871 cut-off events. [2024-06-21 18:38:43,945 INFO L125 PetriNetUnfolderBase]: For 712072/712072 co-relation queries the response was YES. [2024-06-21 18:38:43,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17186 conditions, 1871 events. 1087/1871 cut-off events. For 712072/712072 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10504 event pairs, 201 based on Foata normal form. 2/1872 useless extension candidates. Maximal degree in co-relation 16936. Up to 1261 conditions per place. [2024-06-21 18:38:43,977 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 408 selfloop transitions, 117 changer transitions 0/527 dead transitions. [2024-06-21 18:38:43,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 527 transitions, 7974 flow [2024-06-21 18:38:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:38:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:38:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 18:38:43,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 18:38:43,979 INFO L175 Difference]: Start difference. First operand has 541 places, 504 transitions, 5232 flow. Second operand 12 states and 154 transitions. [2024-06-21 18:38:43,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 527 transitions, 7974 flow [2024-06-21 18:38:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 527 transitions, 7810 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 18:38:47,534 INFO L231 Difference]: Finished difference. Result has 547 places, 506 transitions, 5349 flow [2024-06-21 18:38:47,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5072, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5349, PETRI_PLACES=547, PETRI_TRANSITIONS=506} [2024-06-21 18:38:47,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 516 predicate places. [2024-06-21 18:38:47,534 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 506 transitions, 5349 flow [2024-06-21 18:38:47,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:47,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:47,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 18:38:47,535 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:47,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash -579657299, now seen corresponding path program 3 times [2024-06-21 18:38:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:47,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797999236] [2024-06-21 18:38:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797999236] [2024-06-21 18:38:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797999236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:49,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090436035] [2024-06-21 18:38:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:49,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:49,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 506 transitions, 5349 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:49,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:49,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:49,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:50,347 INFO L124 PetriNetUnfolderBase]: 1098/1892 cut-off events. [2024-06-21 18:38:50,348 INFO L125 PetriNetUnfolderBase]: For 759023/759023 co-relation queries the response was YES. [2024-06-21 18:38:50,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17709 conditions, 1892 events. 1098/1892 cut-off events. For 759023/759023 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10670 event pairs, 190 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 17458. Up to 1687 conditions per place. [2024-06-21 18:38:50,379 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 465 selfloop transitions, 59 changer transitions 0/526 dead transitions. [2024-06-21 18:38:50,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 526 transitions, 6885 flow [2024-06-21 18:38:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:38:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:38:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 18:38:50,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 18:38:50,381 INFO L175 Difference]: Start difference. First operand has 547 places, 506 transitions, 5349 flow. Second operand 11 states and 128 transitions. [2024-06-21 18:38:50,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 526 transitions, 6885 flow [2024-06-21 18:38:54,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 526 transitions, 6691 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 18:38:54,096 INFO L231 Difference]: Finished difference. Result has 550 places, 508 transitions, 5311 flow [2024-06-21 18:38:54,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5311, PETRI_PLACES=550, PETRI_TRANSITIONS=508} [2024-06-21 18:38:54,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-21 18:38:54,096 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 508 transitions, 5311 flow [2024-06-21 18:38:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:54,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:54,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:54,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 18:38:54,097 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:54,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1754295343, now seen corresponding path program 13 times [2024-06-21 18:38:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931690048] [2024-06-21 18:38:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:55,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931690048] [2024-06-21 18:38:55,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931690048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:55,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409655123] [2024-06-21 18:38:55,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:55,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:55,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:55,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:55,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:55,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:38:55,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 508 transitions, 5311 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:55,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:55,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:38:55,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:56,303 INFO L124 PetriNetUnfolderBase]: 1094/1886 cut-off events. [2024-06-21 18:38:56,303 INFO L125 PetriNetUnfolderBase]: For 727274/727274 co-relation queries the response was YES. [2024-06-21 18:38:56,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17179 conditions, 1886 events. 1094/1886 cut-off events. For 727274/727274 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10631 event pairs, 206 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 16927. Up to 1279 conditions per place. [2024-06-21 18:38:56,335 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 391 selfloop transitions, 133 changer transitions 0/526 dead transitions. [2024-06-21 18:38:56,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 526 transitions, 7221 flow [2024-06-21 18:38:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:38:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:38:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 18:38:56,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 18:38:56,337 INFO L175 Difference]: Start difference. First operand has 550 places, 508 transitions, 5311 flow. Second operand 12 states and 148 transitions. [2024-06-21 18:38:56,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 526 transitions, 7221 flow [2024-06-21 18:38:59,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 526 transitions, 7112 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 18:38:59,739 INFO L231 Difference]: Finished difference. Result has 555 places, 508 transitions, 5473 flow [2024-06-21 18:38:59,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5473, PETRI_PLACES=555, PETRI_TRANSITIONS=508} [2024-06-21 18:38:59,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 524 predicate places. [2024-06-21 18:38:59,740 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 508 transitions, 5473 flow [2024-06-21 18:38:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:38:59,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:59,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:59,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 18:38:59,740 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:38:59,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1746260701, now seen corresponding path program 4 times [2024-06-21 18:38:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:59,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057019202] [2024-06-21 18:38:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:59,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057019202] [2024-06-21 18:39:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057019202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:01,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:01,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:39:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223445092] [2024-06-21 18:39:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:39:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:39:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:39:01,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:01,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 508 transitions, 5473 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:39:01,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:01,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:01,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:02,141 INFO L124 PetriNetUnfolderBase]: 1098/1894 cut-off events. [2024-06-21 18:39:02,141 INFO L125 PetriNetUnfolderBase]: For 735175/735175 co-relation queries the response was YES. [2024-06-21 18:39:02,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17468 conditions, 1894 events. 1098/1894 cut-off events. For 735175/735175 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 10717 event pairs, 192 based on Foata normal form. 2/1895 useless extension candidates. Maximal degree in co-relation 17214. Up to 1720 conditions per place. [2024-06-21 18:39:02,176 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 471 selfloop transitions, 54 changer transitions 0/527 dead transitions. [2024-06-21 18:39:02,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 527 transitions, 6609 flow [2024-06-21 18:39:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:39:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:39:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 18:39:02,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 18:39:02,177 INFO L175 Difference]: Start difference. First operand has 555 places, 508 transitions, 5473 flow. Second operand 11 states and 129 transitions. [2024-06-21 18:39:02,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 527 transitions, 6609 flow [2024-06-21 18:39:06,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 527 transitions, 6378 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 18:39:06,116 INFO L231 Difference]: Finished difference. Result has 555 places, 509 transitions, 5368 flow [2024-06-21 18:39:06,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5242, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5368, PETRI_PLACES=555, PETRI_TRANSITIONS=509} [2024-06-21 18:39:06,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 524 predicate places. [2024-06-21 18:39:06,127 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 509 transitions, 5368 flow [2024-06-21 18:39:06,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:39:06,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:06,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:06,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 18:39:06,128 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:06,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 164709819, now seen corresponding path program 14 times [2024-06-21 18:39:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195359663] [2024-06-21 18:39:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:07,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195359663] [2024-06-21 18:39:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195359663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:07,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:07,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:07,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735343800] [2024-06-21 18:39:07,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:07,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:07,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:07,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 509 transitions, 5368 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:07,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:07,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:07,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:08,513 INFO L124 PetriNetUnfolderBase]: 1094/1888 cut-off events. [2024-06-21 18:39:08,513 INFO L125 PetriNetUnfolderBase]: For 702169/702169 co-relation queries the response was YES. [2024-06-21 18:39:08,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16907 conditions, 1888 events. 1094/1888 cut-off events. For 702169/702169 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 10684 event pairs, 199 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 16652. Up to 1284 conditions per place. [2024-06-21 18:39:08,543 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 406 selfloop transitions, 120 changer transitions 0/528 dead transitions. [2024-06-21 18:39:08,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 528 transitions, 7298 flow [2024-06-21 18:39:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:39:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:39:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 18:39:08,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:39:08,544 INFO L175 Difference]: Start difference. First operand has 555 places, 509 transitions, 5368 flow. Second operand 12 states and 150 transitions. [2024-06-21 18:39:08,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 528 transitions, 7298 flow [2024-06-21 18:39:12,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 528 transitions, 7154 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-21 18:39:12,187 INFO L231 Difference]: Finished difference. Result has 557 places, 509 transitions, 5469 flow [2024-06-21 18:39:12,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5224, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5469, PETRI_PLACES=557, PETRI_TRANSITIONS=509} [2024-06-21 18:39:12,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 526 predicate places. [2024-06-21 18:39:12,188 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 509 transitions, 5469 flow [2024-06-21 18:39:12,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:12,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:12,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:12,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 18:39:12,188 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:12,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash 164709633, now seen corresponding path program 12 times [2024-06-21 18:39:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511512094] [2024-06-21 18:39:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:12,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511512094] [2024-06-21 18:39:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511512094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:14,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:39:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647753280] [2024-06-21 18:39:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:14,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:39:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:39:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:39:14,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:14,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 509 transitions, 5469 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:39:14,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:14,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:14,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:14,782 INFO L124 PetriNetUnfolderBase]: 1097/1893 cut-off events. [2024-06-21 18:39:14,783 INFO L125 PetriNetUnfolderBase]: For 689557/689557 co-relation queries the response was YES. [2024-06-21 18:39:14,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17123 conditions, 1893 events. 1097/1893 cut-off events. For 689557/689557 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 10700 event pairs, 210 based on Foata normal form. 1/1893 useless extension candidates. Maximal degree in co-relation 16867. Up to 1705 conditions per place. [2024-06-21 18:39:14,816 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 438 selfloop transitions, 82 changer transitions 0/522 dead transitions. [2024-06-21 18:39:14,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 522 transitions, 6591 flow [2024-06-21 18:39:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:39:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:39:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 18:39:14,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 18:39:14,818 INFO L175 Difference]: Start difference. First operand has 557 places, 509 transitions, 5469 flow. Second operand 12 states and 136 transitions. [2024-06-21 18:39:14,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 522 transitions, 6591 flow [2024-06-21 18:39:18,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 522 transitions, 6380 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 18:39:18,698 INFO L231 Difference]: Finished difference. Result has 559 places, 511 transitions, 5487 flow [2024-06-21 18:39:18,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5258, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5487, PETRI_PLACES=559, PETRI_TRANSITIONS=511} [2024-06-21 18:39:18,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 528 predicate places. [2024-06-21 18:39:18,699 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 511 transitions, 5487 flow [2024-06-21 18:39:18,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:39:18,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:18,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:18,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 18:39:18,700 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:18,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash -63191331, now seen corresponding path program 15 times [2024-06-21 18:39:18,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:18,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488096918] [2024-06-21 18:39:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:18,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488096918] [2024-06-21 18:39:20,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488096918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:20,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:20,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631497407] [2024-06-21 18:39:20,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:20,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:20,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:20,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:20,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 511 transitions, 5487 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:20,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:20,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:20,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:21,020 INFO L124 PetriNetUnfolderBase]: 1123/1935 cut-off events. [2024-06-21 18:39:21,020 INFO L125 PetriNetUnfolderBase]: For 798565/798565 co-relation queries the response was YES. [2024-06-21 18:39:21,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18128 conditions, 1935 events. 1123/1935 cut-off events. For 798565/798565 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10970 event pairs, 199 based on Foata normal form. 2/1936 useless extension candidates. Maximal degree in co-relation 17871. Up to 1313 conditions per place. [2024-06-21 18:39:21,056 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 417 selfloop transitions, 120 changer transitions 0/539 dead transitions. [2024-06-21 18:39:21,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 539 transitions, 8387 flow [2024-06-21 18:39:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:39:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:39:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 18:39:21,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 18:39:21,058 INFO L175 Difference]: Start difference. First operand has 559 places, 511 transitions, 5487 flow. Second operand 12 states and 156 transitions. [2024-06-21 18:39:21,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 539 transitions, 8387 flow [2024-06-21 18:39:25,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 539 transitions, 8174 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-21 18:39:25,252 INFO L231 Difference]: Finished difference. Result has 561 places, 517 transitions, 5639 flow [2024-06-21 18:39:25,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5274, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5639, PETRI_PLACES=561, PETRI_TRANSITIONS=517} [2024-06-21 18:39:25,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-21 18:39:25,252 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 517 transitions, 5639 flow [2024-06-21 18:39:25,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:25,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:25,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:25,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 18:39:25,253 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:25,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash -56689143, now seen corresponding path program 5 times [2024-06-21 18:39:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:25,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861845473] [2024-06-21 18:39:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861845473] [2024-06-21 18:39:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861845473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:27,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:27,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918122675] [2024-06-21 18:39:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:27,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:27,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 517 transitions, 5639 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:27,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:27,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:27,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:28,194 INFO L124 PetriNetUnfolderBase]: 1120/1930 cut-off events. [2024-06-21 18:39:28,195 INFO L125 PetriNetUnfolderBase]: For 765976/765976 co-relation queries the response was YES. [2024-06-21 18:39:28,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17832 conditions, 1930 events. 1120/1930 cut-off events. For 765976/765976 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10960 event pairs, 196 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 17574. Up to 1756 conditions per place. [2024-06-21 18:39:28,228 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 480 selfloop transitions, 53 changer transitions 0/535 dead transitions. [2024-06-21 18:39:28,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 535 transitions, 6779 flow [2024-06-21 18:39:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:39:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:39:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 18:39:28,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 18:39:28,230 INFO L175 Difference]: Start difference. First operand has 561 places, 517 transitions, 5639 flow. Second operand 11 states and 130 transitions. [2024-06-21 18:39:28,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 535 transitions, 6779 flow [2024-06-21 18:39:32,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 535 transitions, 6550 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 18:39:32,351 INFO L231 Difference]: Finished difference. Result has 565 places, 517 transitions, 5520 flow [2024-06-21 18:39:32,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5410, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5520, PETRI_PLACES=565, PETRI_TRANSITIONS=517} [2024-06-21 18:39:32,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-21 18:39:32,352 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 517 transitions, 5520 flow [2024-06-21 18:39:32,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:32,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:32,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 18:39:32,353 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:32,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -56928711, now seen corresponding path program 16 times [2024-06-21 18:39:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369969213] [2024-06-21 18:39:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369969213] [2024-06-21 18:39:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369969213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:33,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417594506] [2024-06-21 18:39:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:34,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:34,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 517 transitions, 5520 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:34,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:34,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:34,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:34,848 INFO L124 PetriNetUnfolderBase]: 1136/1956 cut-off events. [2024-06-21 18:39:34,849 INFO L125 PetriNetUnfolderBase]: For 814778/814778 co-relation queries the response was YES. [2024-06-21 18:39:34,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18250 conditions, 1956 events. 1136/1956 cut-off events. For 814778/814778 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 11140 event pairs, 206 based on Foata normal form. 2/1957 useless extension candidates. Maximal degree in co-relation 17991. Up to 1323 conditions per place. [2024-06-21 18:39:34,885 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 420 selfloop transitions, 121 changer transitions 0/543 dead transitions. [2024-06-21 18:39:34,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 543 transitions, 8408 flow [2024-06-21 18:39:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:39:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:39:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 18:39:34,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 18:39:34,887 INFO L175 Difference]: Start difference. First operand has 565 places, 517 transitions, 5520 flow. Second operand 12 states and 158 transitions. [2024-06-21 18:39:34,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 543 transitions, 8408 flow [2024-06-21 18:39:39,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 543 transitions, 8246 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-21 18:39:39,221 INFO L231 Difference]: Finished difference. Result has 563 places, 521 transitions, 5689 flow [2024-06-21 18:39:39,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5358, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5689, PETRI_PLACES=563, PETRI_TRANSITIONS=521} [2024-06-21 18:39:39,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 532 predicate places. [2024-06-21 18:39:39,221 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 521 transitions, 5689 flow [2024-06-21 18:39:39,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:39,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:39,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 18:39:39,222 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:39,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -63184821, now seen corresponding path program 17 times [2024-06-21 18:39:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045159741] [2024-06-21 18:39:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:40,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045159741] [2024-06-21 18:39:40,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045159741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:40,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:40,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:40,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393069761] [2024-06-21 18:39:40,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:40,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:40,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:40,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 521 transitions, 5689 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:40,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:40,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:40,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:41,829 INFO L124 PetriNetUnfolderBase]: 1132/1950 cut-off events. [2024-06-21 18:39:41,829 INFO L125 PetriNetUnfolderBase]: For 781794/781794 co-relation queries the response was YES. [2024-06-21 18:39:41,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17984 conditions, 1950 events. 1132/1950 cut-off events. For 781794/781794 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 11099 event pairs, 201 based on Foata normal form. 2/1951 useless extension candidates. Maximal degree in co-relation 17724. Up to 1320 conditions per place. [2024-06-21 18:39:41,866 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 414 selfloop transitions, 125 changer transitions 0/541 dead transitions. [2024-06-21 18:39:41,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 541 transitions, 8077 flow [2024-06-21 18:39:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:39:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:39:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 18:39:41,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 18:39:41,867 INFO L175 Difference]: Start difference. First operand has 563 places, 521 transitions, 5689 flow. Second operand 12 states and 153 transitions. [2024-06-21 18:39:41,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 541 transitions, 8077 flow [2024-06-21 18:39:46,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 541 transitions, 7652 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-21 18:39:46,194 INFO L231 Difference]: Finished difference. Result has 564 places, 521 transitions, 5519 flow [2024-06-21 18:39:46,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5519, PETRI_PLACES=564, PETRI_TRANSITIONS=521} [2024-06-21 18:39:46,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 533 predicate places. [2024-06-21 18:39:46,194 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 521 transitions, 5519 flow [2024-06-21 18:39:46,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:46,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:46,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:46,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 18:39:46,195 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:46,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:46,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1517935657, now seen corresponding path program 13 times [2024-06-21 18:39:46,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:46,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659361211] [2024-06-21 18:39:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:47,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:47,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659361211] [2024-06-21 18:39:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659361211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:47,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:47,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387304477] [2024-06-21 18:39:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:47,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:47,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 521 transitions, 5519 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:47,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:47,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:47,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:48,866 INFO L124 PetriNetUnfolderBase]: 1140/1963 cut-off events. [2024-06-21 18:39:48,866 INFO L125 PetriNetUnfolderBase]: For 787911/787911 co-relation queries the response was YES. [2024-06-21 18:39:48,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18306 conditions, 1963 events. 1140/1963 cut-off events. For 787911/787911 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11199 event pairs, 217 based on Foata normal form. 1/1963 useless extension candidates. Maximal degree in co-relation 18045. Up to 1760 conditions per place. [2024-06-21 18:39:48,898 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 449 selfloop transitions, 86 changer transitions 0/537 dead transitions. [2024-06-21 18:39:48,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 537 transitions, 7149 flow [2024-06-21 18:39:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:39:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:39:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 18:39:48,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 18:39:48,899 INFO L175 Difference]: Start difference. First operand has 564 places, 521 transitions, 5519 flow. Second operand 11 states and 133 transitions. [2024-06-21 18:39:48,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 537 transitions, 7149 flow [2024-06-21 18:39:52,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 537 transitions, 6905 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:39:52,975 INFO L231 Difference]: Finished difference. Result has 565 places, 525 transitions, 5576 flow [2024-06-21 18:39:52,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5275, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5576, PETRI_PLACES=565, PETRI_TRANSITIONS=525} [2024-06-21 18:39:52,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-21 18:39:52,976 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 525 transitions, 5576 flow [2024-06-21 18:39:52,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:52,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:52,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:52,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 18:39:52,976 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:39:52,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1524606733, now seen corresponding path program 18 times [2024-06-21 18:39:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:52,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344402009] [2024-06-21 18:39:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344402009] [2024-06-21 18:39:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344402009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:54,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:54,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78373374] [2024-06-21 18:39:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:54,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:54,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:39:54,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 525 transitions, 5576 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:39:54,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:54,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:39:54,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:55,839 INFO L124 PetriNetUnfolderBase]: 1136/1957 cut-off events. [2024-06-21 18:39:55,840 INFO L125 PetriNetUnfolderBase]: For 773672/773672 co-relation queries the response was YES. [2024-06-21 18:39:55,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17785 conditions, 1957 events. 1136/1957 cut-off events. For 773672/773672 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11159 event pairs, 207 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 17523. Up to 1330 conditions per place. [2024-06-21 18:39:55,876 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 418 selfloop transitions, 124 changer transitions 0/544 dead transitions. [2024-06-21 18:39:55,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 544 transitions, 7566 flow [2024-06-21 18:39:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:39:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:39:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 18:39:55,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 18:39:55,877 INFO L175 Difference]: Start difference. First operand has 565 places, 525 transitions, 5576 flow. Second operand 12 states and 153 transitions. [2024-06-21 18:39:55,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 544 transitions, 7566 flow [2024-06-21 18:40:00,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 544 transitions, 7380 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-21 18:40:00,061 INFO L231 Difference]: Finished difference. Result has 570 places, 525 transitions, 5643 flow [2024-06-21 18:40:00,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5643, PETRI_PLACES=570, PETRI_TRANSITIONS=525} [2024-06-21 18:40:00,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 539 predicate places. [2024-06-21 18:40:00,061 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 525 transitions, 5643 flow [2024-06-21 18:40:00,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:00,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:00,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:00,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 18:40:00,062 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:00,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash 500959541, now seen corresponding path program 19 times [2024-06-21 18:40:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348127735] [2024-06-21 18:40:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348127735] [2024-06-21 18:40:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348127735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:01,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:01,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:40:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765922603] [2024-06-21 18:40:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:40:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:40:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:40:01,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:01,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 525 transitions, 5643 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:01,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:01,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:01,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:02,432 INFO L124 PetriNetUnfolderBase]: 1132/1951 cut-off events. [2024-06-21 18:40:02,432 INFO L125 PetriNetUnfolderBase]: For 738091/738091 co-relation queries the response was YES. [2024-06-21 18:40:02,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17536 conditions, 1951 events. 1132/1951 cut-off events. For 738091/738091 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11117 event pairs, 204 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 17272. Up to 1327 conditions per place. [2024-06-21 18:40:02,469 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 421 selfloop transitions, 122 changer transitions 0/545 dead transitions. [2024-06-21 18:40:02,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 545 transitions, 7647 flow [2024-06-21 18:40:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 18:40:02,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 18:40:02,471 INFO L175 Difference]: Start difference. First operand has 570 places, 525 transitions, 5643 flow. Second operand 12 states and 155 transitions. [2024-06-21 18:40:02,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 545 transitions, 7647 flow [2024-06-21 18:40:06,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 545 transitions, 7262 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-21 18:40:06,357 INFO L231 Difference]: Finished difference. Result has 569 places, 525 transitions, 5507 flow [2024-06-21 18:40:06,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5258, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5507, PETRI_PLACES=569, PETRI_TRANSITIONS=525} [2024-06-21 18:40:06,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-21 18:40:06,358 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 525 transitions, 5507 flow [2024-06-21 18:40:06,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:06,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:06,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:06,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 18:40:06,359 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:06,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1524369397, now seen corresponding path program 14 times [2024-06-21 18:40:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498445864] [2024-06-21 18:40:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:08,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498445864] [2024-06-21 18:40:08,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498445864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:08,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:08,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:40:08,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208076915] [2024-06-21 18:40:08,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:08,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:40:08,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:40:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:40:08,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:08,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 525 transitions, 5507 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:08,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:08,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:08,928 INFO L124 PetriNetUnfolderBase]: 1135/1956 cut-off events. [2024-06-21 18:40:08,928 INFO L125 PetriNetUnfolderBase]: For 722292/722292 co-relation queries the response was YES. [2024-06-21 18:40:08,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17544 conditions, 1956 events. 1135/1956 cut-off events. For 722292/722292 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 11166 event pairs, 215 based on Foata normal form. 1/1956 useless extension candidates. Maximal degree in co-relation 17279. Up to 1768 conditions per place. [2024-06-21 18:40:08,958 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 460 selfloop transitions, 76 changer transitions 0/538 dead transitions. [2024-06-21 18:40:08,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 538 transitions, 6653 flow [2024-06-21 18:40:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 18:40:08,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 18:40:08,960 INFO L175 Difference]: Start difference. First operand has 569 places, 525 transitions, 5507 flow. Second operand 12 states and 139 transitions. [2024-06-21 18:40:08,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 538 transitions, 6653 flow [2024-06-21 18:40:13,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 538 transitions, 6402 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 18:40:13,047 INFO L231 Difference]: Finished difference. Result has 570 places, 527 transitions, 5465 flow [2024-06-21 18:40:13,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5256, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5465, PETRI_PLACES=570, PETRI_TRANSITIONS=527} [2024-06-21 18:40:13,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 539 predicate places. [2024-06-21 18:40:13,047 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 527 transitions, 5465 flow [2024-06-21 18:40:13,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:13,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:13,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:13,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 18:40:13,048 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:13,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:13,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1517940307, now seen corresponding path program 15 times [2024-06-21 18:40:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:13,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262404488] [2024-06-21 18:40:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:13,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:14,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:14,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262404488] [2024-06-21 18:40:14,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262404488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:14,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:14,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:40:14,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017017521] [2024-06-21 18:40:14,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:14,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:40:14,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:40:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:40:14,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:14,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 527 transitions, 5465 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:14,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:14,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:14,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:15,358 INFO L124 PetriNetUnfolderBase]: 1133/1953 cut-off events. [2024-06-21 18:40:15,358 INFO L125 PetriNetUnfolderBase]: For 706672/706672 co-relation queries the response was YES. [2024-06-21 18:40:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17191 conditions, 1953 events. 1133/1953 cut-off events. For 706672/706672 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 11152 event pairs, 215 based on Foata normal form. 1/1953 useless extension candidates. Maximal degree in co-relation 16925. Up to 1765 conditions per place. [2024-06-21 18:40:15,395 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 457 selfloop transitions, 79 changer transitions 0/538 dead transitions. [2024-06-21 18:40:15,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 538 transitions, 6563 flow [2024-06-21 18:40:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:40:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:40:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 18:40:15,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 18:40:15,396 INFO L175 Difference]: Start difference. First operand has 570 places, 527 transitions, 5465 flow. Second operand 11 states and 131 transitions. [2024-06-21 18:40:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 538 transitions, 6563 flow [2024-06-21 18:40:19,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 538 transitions, 6344 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-21 18:40:19,371 INFO L231 Difference]: Finished difference. Result has 571 places, 527 transitions, 5409 flow [2024-06-21 18:40:19,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5409, PETRI_PLACES=571, PETRI_TRANSITIONS=527} [2024-06-21 18:40:19,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 540 predicate places. [2024-06-21 18:40:19,371 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 5409 flow [2024-06-21 18:40:19,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:19,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:19,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:19,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 18:40:19,372 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:19,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1517935533, now seen corresponding path program 6 times [2024-06-21 18:40:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:19,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210547787] [2024-06-21 18:40:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:21,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210547787] [2024-06-21 18:40:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210547787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:21,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:40:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928549072] [2024-06-21 18:40:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:21,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:40:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:40:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:40:21,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:21,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 527 transitions, 5409 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:21,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:21,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:21,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:22,199 INFO L124 PetriNetUnfolderBase]: 1137/1961 cut-off events. [2024-06-21 18:40:22,199 INFO L125 PetriNetUnfolderBase]: For 735679/735679 co-relation queries the response was YES. [2024-06-21 18:40:22,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17237 conditions, 1961 events. 1137/1961 cut-off events. For 735679/735679 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 11210 event pairs, 214 based on Foata normal form. 2/1962 useless extension candidates. Maximal degree in co-relation 16970. Up to 1872 conditions per place. [2024-06-21 18:40:22,237 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 501 selfloop transitions, 37 changer transitions 0/540 dead transitions. [2024-06-21 18:40:22,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 540 transitions, 6543 flow [2024-06-21 18:40:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 18:40:22,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-21 18:40:22,238 INFO L175 Difference]: Start difference. First operand has 571 places, 527 transitions, 5409 flow. Second operand 12 states and 131 transitions. [2024-06-21 18:40:22,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 540 transitions, 6543 flow [2024-06-21 18:40:26,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 540 transitions, 6359 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 18:40:26,254 INFO L231 Difference]: Finished difference. Result has 573 places, 528 transitions, 5335 flow [2024-06-21 18:40:26,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5225, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5335, PETRI_PLACES=573, PETRI_TRANSITIONS=528} [2024-06-21 18:40:26,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 542 predicate places. [2024-06-21 18:40:26,254 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 528 transitions, 5335 flow [2024-06-21 18:40:26,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:26,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:26,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 18:40:26,255 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:26,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1517940493, now seen corresponding path program 20 times [2024-06-21 18:40:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:26,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914025643] [2024-06-21 18:40:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:27,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:27,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914025643] [2024-06-21 18:40:27,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914025643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:27,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:27,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:40:27,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876151130] [2024-06-21 18:40:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:40:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:40:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:40:27,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:27,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 528 transitions, 5335 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:27,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:27,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:27,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:28,567 INFO L124 PetriNetUnfolderBase]: 1133/1955 cut-off events. [2024-06-21 18:40:28,567 INFO L125 PetriNetUnfolderBase]: For 697721/697721 co-relation queries the response was YES. [2024-06-21 18:40:28,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16717 conditions, 1955 events. 1133/1955 cut-off events. For 697721/697721 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 11179 event pairs, 195 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 16449. Up to 1334 conditions per place. [2024-06-21 18:40:28,604 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 413 selfloop transitions, 131 changer transitions 0/546 dead transitions. [2024-06-21 18:40:28,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 546 transitions, 6923 flow [2024-06-21 18:40:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 18:40:28,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 18:40:28,606 INFO L175 Difference]: Start difference. First operand has 573 places, 528 transitions, 5335 flow. Second operand 12 states and 150 transitions. [2024-06-21 18:40:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 546 transitions, 6923 flow [2024-06-21 18:40:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 546 transitions, 6803 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-21 18:40:32,484 INFO L231 Difference]: Finished difference. Result has 575 places, 528 transitions, 5482 flow [2024-06-21 18:40:32,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5482, PETRI_PLACES=575, PETRI_TRANSITIONS=528} [2024-06-21 18:40:32,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-21 18:40:32,484 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 528 transitions, 5482 flow [2024-06-21 18:40:32,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:32,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:32,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:32,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 18:40:32,485 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:32,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash 624421067, now seen corresponding path program 7 times [2024-06-21 18:40:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:32,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276718917] [2024-06-21 18:40:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:32,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:34,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:34,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276718917] [2024-06-21 18:40:34,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276718917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:34,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:34,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:40:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551753416] [2024-06-21 18:40:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:34,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:40:34,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:40:34,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:40:34,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:34,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 528 transitions, 5482 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:34,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:34,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:34,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:35,069 INFO L124 PetriNetUnfolderBase]: 1137/1963 cut-off events. [2024-06-21 18:40:35,070 INFO L125 PetriNetUnfolderBase]: For 704346/704346 co-relation queries the response was YES. [2024-06-21 18:40:35,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17000 conditions, 1963 events. 1137/1963 cut-off events. For 704346/704346 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 11243 event pairs, 216 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 16731. Up to 1924 conditions per place. [2024-06-21 18:40:35,106 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 519 selfloop transitions, 19 changer transitions 0/540 dead transitions. [2024-06-21 18:40:35,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 540 transitions, 6614 flow [2024-06-21 18:40:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 18:40:35,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-21 18:40:35,108 INFO L175 Difference]: Start difference. First operand has 575 places, 528 transitions, 5482 flow. Second operand 12 states and 122 transitions. [2024-06-21 18:40:35,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 540 transitions, 6614 flow [2024-06-21 18:40:38,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 540 transitions, 6334 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 18:40:39,010 INFO L231 Difference]: Finished difference. Result has 575 places, 529 transitions, 5278 flow [2024-06-21 18:40:39,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5278, PETRI_PLACES=575, PETRI_TRANSITIONS=529} [2024-06-21 18:40:39,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-21 18:40:39,011 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 529 transitions, 5278 flow [2024-06-21 18:40:39,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:39,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:39,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:39,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 18:40:39,011 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:39,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1382484917, now seen corresponding path program 21 times [2024-06-21 18:40:39,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:39,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167522012] [2024-06-21 18:40:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:40,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:40,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167522012] [2024-06-21 18:40:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167522012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:40:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339352561] [2024-06-21 18:40:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:40,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:40:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:40:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:40:40,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:40,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 529 transitions, 5278 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:40,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:40,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:40,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:41,647 INFO L124 PetriNetUnfolderBase]: 1173/2021 cut-off events. [2024-06-21 18:40:41,647 INFO L125 PetriNetUnfolderBase]: For 848350/848350 co-relation queries the response was YES. [2024-06-21 18:40:41,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18424 conditions, 2021 events. 1173/2021 cut-off events. For 848350/848350 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 11568 event pairs, 217 based on Foata normal form. 2/2022 useless extension candidates. Maximal degree in co-relation 18154. Up to 1725 conditions per place. [2024-06-21 18:40:41,683 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 497 selfloop transitions, 59 changer transitions 0/558 dead transitions. [2024-06-21 18:40:41,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 558 transitions, 8345 flow [2024-06-21 18:40:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 18:40:41,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 18:40:41,684 INFO L175 Difference]: Start difference. First operand has 575 places, 529 transitions, 5278 flow. Second operand 12 states and 147 transitions. [2024-06-21 18:40:41,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 558 transitions, 8345 flow [2024-06-21 18:40:46,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 558 transitions, 8279 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 18:40:46,604 INFO L231 Difference]: Finished difference. Result has 577 places, 537 transitions, 5496 flow [2024-06-21 18:40:46,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5496, PETRI_PLACES=577, PETRI_TRANSITIONS=537} [2024-06-21 18:40:46,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-21 18:40:46,621 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 537 transitions, 5496 flow [2024-06-21 18:40:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:46,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:46,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:46,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 18:40:46,621 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:46,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:46,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1865428245, now seen corresponding path program 22 times [2024-06-21 18:40:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647745650] [2024-06-21 18:40:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647745650] [2024-06-21 18:40:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647745650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:48,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:40:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307848933] [2024-06-21 18:40:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:48,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:40:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:40:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:40:48,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:48,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 537 transitions, 5496 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:48,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:48,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:48,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:49,128 INFO L124 PetriNetUnfolderBase]: 1189/2047 cut-off events. [2024-06-21 18:40:49,128 INFO L125 PetriNetUnfolderBase]: For 903056/903056 co-relation queries the response was YES. [2024-06-21 18:40:49,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 2047 events. 1189/2047 cut-off events. For 903056/903056 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 11740 event pairs, 215 based on Foata normal form. 2/2048 useless extension candidates. Maximal degree in co-relation 18870. Up to 1911 conditions per place. [2024-06-21 18:40:49,167 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 519 selfloop transitions, 38 changer transitions 0/559 dead transitions. [2024-06-21 18:40:49,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 559 transitions, 7630 flow [2024-06-21 18:40:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 18:40:49,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 18:40:49,169 INFO L175 Difference]: Start difference. First operand has 577 places, 537 transitions, 5496 flow. Second operand 12 states and 135 transitions. [2024-06-21 18:40:49,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 559 transitions, 7630 flow [2024-06-21 18:40:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 559 transitions, 7482 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 18:40:54,377 INFO L231 Difference]: Finished difference. Result has 582 places, 541 transitions, 5517 flow [2024-06-21 18:40:54,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5517, PETRI_PLACES=582, PETRI_TRANSITIONS=541} [2024-06-21 18:40:54,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-21 18:40:54,378 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 541 transitions, 5517 flow [2024-06-21 18:40:54,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:54,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:54,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:54,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 18:40:54,378 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:40:54,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1261152607, now seen corresponding path program 23 times [2024-06-21 18:40:54,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:54,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670080576] [2024-06-21 18:40:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:54,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:55,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:55,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670080576] [2024-06-21 18:40:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670080576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:40:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28169655] [2024-06-21 18:40:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:55,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:40:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:40:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:40:56,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:40:56,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 541 transitions, 5517 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:40:56,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:56,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:40:56,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:57,060 INFO L124 PetriNetUnfolderBase]: 1195/2057 cut-off events. [2024-06-21 18:40:57,061 INFO L125 PetriNetUnfolderBase]: For 911013/911013 co-relation queries the response was YES. [2024-06-21 18:40:57,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19149 conditions, 2057 events. 1195/2057 cut-off events. For 911013/911013 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 11805 event pairs, 208 based on Foata normal form. 2/2058 useless extension candidates. Maximal degree in co-relation 18877. Up to 1746 conditions per place. [2024-06-21 18:40:57,102 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 468 selfloop transitions, 93 changer transitions 0/563 dead transitions. [2024-06-21 18:40:57,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 563 transitions, 7623 flow [2024-06-21 18:40:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:40:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:40:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 18:40:57,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 18:40:57,103 INFO L175 Difference]: Start difference. First operand has 582 places, 541 transitions, 5517 flow. Second operand 12 states and 139 transitions. [2024-06-21 18:40:57,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 563 transitions, 7623 flow [2024-06-21 18:41:02,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 563 transitions, 7510 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 18:41:02,304 INFO L231 Difference]: Finished difference. Result has 585 places, 543 transitions, 5633 flow [2024-06-21 18:41:02,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5404, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5633, PETRI_PLACES=585, PETRI_TRANSITIONS=543} [2024-06-21 18:41:02,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 554 predicate places. [2024-06-21 18:41:02,305 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 543 transitions, 5633 flow [2024-06-21 18:41:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:41:02,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:02,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 18:41:02,305 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:02,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1261152421, now seen corresponding path program 16 times [2024-06-21 18:41:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473773397] [2024-06-21 18:41:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:03,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:03,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473773397] [2024-06-21 18:41:03,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473773397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:03,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:03,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:41:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706059756] [2024-06-21 18:41:03,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:03,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:41:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:03,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:41:03,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:41:04,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:04,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 543 transitions, 5633 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:04,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:04,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:04,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:04,841 INFO L124 PetriNetUnfolderBase]: 1203/2070 cut-off events. [2024-06-21 18:41:04,842 INFO L125 PetriNetUnfolderBase]: For 919534/919534 co-relation queries the response was YES. [2024-06-21 18:41:04,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19627 conditions, 2070 events. 1203/2070 cut-off events. For 919534/919534 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 11927 event pairs, 223 based on Foata normal form. 1/2070 useless extension candidates. Maximal degree in co-relation 19354. Up to 1976 conditions per place. [2024-06-21 18:41:04,882 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 505 selfloop transitions, 53 changer transitions 0/560 dead transitions. [2024-06-21 18:41:04,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 560 transitions, 7318 flow [2024-06-21 18:41:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:41:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:41:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-21 18:41:04,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-21 18:41:04,883 INFO L175 Difference]: Start difference. First operand has 585 places, 543 transitions, 5633 flow. Second operand 12 states and 133 transitions. [2024-06-21 18:41:04,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 560 transitions, 7318 flow [2024-06-21 18:41:10,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 560 transitions, 6930 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-21 18:41:10,028 INFO L231 Difference]: Finished difference. Result has 588 places, 549 transitions, 5508 flow [2024-06-21 18:41:10,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5251, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5508, PETRI_PLACES=588, PETRI_TRANSITIONS=549} [2024-06-21 18:41:10,028 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 557 predicate places. [2024-06-21 18:41:10,028 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 549 transitions, 5508 flow [2024-06-21 18:41:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:10,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:10,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 18:41:10,029 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:10,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1261147771, now seen corresponding path program 17 times [2024-06-21 18:41:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044776947] [2024-06-21 18:41:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044776947] [2024-06-21 18:41:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044776947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:41:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650035552] [2024-06-21 18:41:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:11,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:41:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:41:11,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:41:11,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:11,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 549 transitions, 5508 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:41:11,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:11,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:11,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:12,280 INFO L124 PetriNetUnfolderBase]: 1211/2083 cut-off events. [2024-06-21 18:41:12,280 INFO L125 PetriNetUnfolderBase]: For 951268/951268 co-relation queries the response was YES. [2024-06-21 18:41:12,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20077 conditions, 2083 events. 1211/2083 cut-off events. For 951268/951268 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 12031 event pairs, 225 based on Foata normal form. 1/2083 useless extension candidates. Maximal degree in co-relation 19801. Up to 1989 conditions per place. [2024-06-21 18:41:12,316 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 513 selfloop transitions, 49 changer transitions 0/564 dead transitions. [2024-06-21 18:41:12,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 564 transitions, 7228 flow [2024-06-21 18:41:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:41:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:41:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 18:41:12,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 18:41:12,318 INFO L175 Difference]: Start difference. First operand has 588 places, 549 transitions, 5508 flow. Second operand 11 states and 123 transitions. [2024-06-21 18:41:12,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 564 transitions, 7228 flow [2024-06-21 18:41:18,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 564 transitions, 7106 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 18:41:18,060 INFO L231 Difference]: Finished difference. Result has 592 places, 553 transitions, 5629 flow [2024-06-21 18:41:18,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5629, PETRI_PLACES=592, PETRI_TRANSITIONS=553} [2024-06-21 18:41:18,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2024-06-21 18:41:18,061 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 553 transitions, 5629 flow [2024-06-21 18:41:18,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:41:18,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:18,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:18,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 18:41:18,061 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:18,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash -968502881, now seen corresponding path program 24 times [2024-06-21 18:41:18,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:18,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315393652] [2024-06-21 18:41:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315393652] [2024-06-21 18:41:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315393652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:19,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:41:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296347835] [2024-06-21 18:41:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:41:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:41:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:41:19,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:19,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 553 transitions, 5629 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:41:19,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:19,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:19,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:20,477 INFO L124 PetriNetUnfolderBase]: 1207/2077 cut-off events. [2024-06-21 18:41:20,477 INFO L125 PetriNetUnfolderBase]: For 936166/936166 co-relation queries the response was YES. [2024-06-21 18:41:20,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19629 conditions, 2077 events. 1207/2077 cut-off events. For 936166/936166 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 11972 event pairs, 216 based on Foata normal form. 2/2078 useless extension candidates. Maximal degree in co-relation 19352. Up to 1764 conditions per place. [2024-06-21 18:41:20,519 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 503 selfloop transitions, 69 changer transitions 0/574 dead transitions. [2024-06-21 18:41:20,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 574 transitions, 8620 flow [2024-06-21 18:41:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:41:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:41:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:41:20,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 18:41:20,521 INFO L175 Difference]: Start difference. First operand has 592 places, 553 transitions, 5629 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:41:20,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 574 transitions, 8620 flow [2024-06-21 18:41:25,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 574 transitions, 8458 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-21 18:41:25,819 INFO L231 Difference]: Finished difference. Result has 596 places, 553 transitions, 5610 flow [2024-06-21 18:41:25,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5610, PETRI_PLACES=596, PETRI_TRANSITIONS=553} [2024-06-21 18:41:25,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 565 predicate places. [2024-06-21 18:41:25,820 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 553 transitions, 5610 flow [2024-06-21 18:41:25,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:41:25,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:25,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:25,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 18:41:25,821 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:25,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1382478221, now seen corresponding path program 18 times [2024-06-21 18:41:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:25,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273855681] [2024-06-21 18:41:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:25,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:27,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273855681] [2024-06-21 18:41:27,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273855681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:27,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:27,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:41:27,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700081002] [2024-06-21 18:41:27,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:27,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:41:27,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:41:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:41:27,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:27,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 553 transitions, 5610 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:27,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:27,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:27,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:28,271 INFO L124 PetriNetUnfolderBase]: 1210/2082 cut-off events. [2024-06-21 18:41:28,272 INFO L125 PetriNetUnfolderBase]: For 919970/919970 co-relation queries the response was YES. [2024-06-21 18:41:28,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19751 conditions, 2082 events. 1210/2082 cut-off events. For 919970/919970 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 12010 event pairs, 223 based on Foata normal form. 1/2082 useless extension candidates. Maximal degree in co-relation 19472. Up to 2004 conditions per place. [2024-06-21 18:41:28,312 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 525 selfloop transitions, 38 changer transitions 0/565 dead transitions. [2024-06-21 18:41:28,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 565 transitions, 6810 flow [2024-06-21 18:41:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:41:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:41:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 18:41:28,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-21 18:41:28,313 INFO L175 Difference]: Start difference. First operand has 596 places, 553 transitions, 5610 flow. Second operand 12 states and 130 transitions. [2024-06-21 18:41:28,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 565 transitions, 6810 flow [2024-06-21 18:41:33,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 565 transitions, 6680 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:41:33,592 INFO L231 Difference]: Finished difference. Result has 599 places, 555 transitions, 5617 flow [2024-06-21 18:41:33,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5480, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5617, PETRI_PLACES=599, PETRI_TRANSITIONS=555} [2024-06-21 18:41:33,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 568 predicate places. [2024-06-21 18:41:33,593 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 555 transitions, 5617 flow [2024-06-21 18:41:33,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:33,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:33,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:33,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 18:41:33,594 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:33,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1391056355, now seen corresponding path program 6 times [2024-06-21 18:41:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288434609] [2024-06-21 18:41:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288434609] [2024-06-21 18:41:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288434609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:36,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:36,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:41:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492175682] [2024-06-21 18:41:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:41:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:41:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:41:36,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:36,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 555 transitions, 5617 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:36,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:36,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:36,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:37,180 INFO L124 PetriNetUnfolderBase]: 1214/2090 cut-off events. [2024-06-21 18:41:37,181 INFO L125 PetriNetUnfolderBase]: For 953019/953019 co-relation queries the response was YES. [2024-06-21 18:41:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19760 conditions, 2090 events. 1214/2090 cut-off events. For 953019/953019 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 12088 event pairs, 216 based on Foata normal form. 2/2091 useless extension candidates. Maximal degree in co-relation 19480. Up to 1979 conditions per place. [2024-06-21 18:41:37,225 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 530 selfloop transitions, 39 changer transitions 0/571 dead transitions. [2024-06-21 18:41:37,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 571 transitions, 6835 flow [2024-06-21 18:41:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:41:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:41:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 18:41:37,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 18:41:37,226 INFO L175 Difference]: Start difference. First operand has 599 places, 555 transitions, 5617 flow. Second operand 11 states and 123 transitions. [2024-06-21 18:41:37,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 571 transitions, 6835 flow [2024-06-21 18:41:42,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 571 transitions, 6718 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 18:41:42,563 INFO L231 Difference]: Finished difference. Result has 600 places, 556 transitions, 5602 flow [2024-06-21 18:41:42,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5602, PETRI_PLACES=600, PETRI_TRANSITIONS=556} [2024-06-21 18:41:42,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 569 predicate places. [2024-06-21 18:41:42,563 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 556 transitions, 5602 flow [2024-06-21 18:41:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:42,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:42,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:42,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 18:41:42,564 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:42,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1382724485, now seen corresponding path program 7 times [2024-06-21 18:41:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616364820] [2024-06-21 18:41:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:44,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616364820] [2024-06-21 18:41:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616364820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:44,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:44,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:41:44,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851443705] [2024-06-21 18:41:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:41:44,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:41:44,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:41:44,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:44,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 556 transitions, 5602 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:44,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:44,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:44,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:45,241 INFO L124 PetriNetUnfolderBase]: 1218/2098 cut-off events. [2024-06-21 18:41:45,241 INFO L125 PetriNetUnfolderBase]: For 961443/961443 co-relation queries the response was YES. [2024-06-21 18:41:45,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19830 conditions, 2098 events. 1218/2098 cut-off events. For 961443/961443 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 12159 event pairs, 218 based on Foata normal form. 2/2099 useless extension candidates. Maximal degree in co-relation 19549. Up to 1987 conditions per place. [2024-06-21 18:41:45,279 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 532 selfloop transitions, 38 changer transitions 0/572 dead transitions. [2024-06-21 18:41:45,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 572 transitions, 6824 flow [2024-06-21 18:41:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:41:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:41:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 18:41:45,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 18:41:45,280 INFO L175 Difference]: Start difference. First operand has 600 places, 556 transitions, 5602 flow. Second operand 11 states and 125 transitions. [2024-06-21 18:41:45,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 572 transitions, 6824 flow [2024-06-21 18:41:50,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 572 transitions, 6704 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 18:41:50,457 INFO L231 Difference]: Finished difference. Result has 602 places, 557 transitions, 5584 flow [2024-06-21 18:41:50,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5584, PETRI_PLACES=602, PETRI_TRANSITIONS=557} [2024-06-21 18:41:50,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 571 predicate places. [2024-06-21 18:41:50,457 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 557 transitions, 5584 flow [2024-06-21 18:41:50,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:50,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:50,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:50,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 18:41:50,458 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:50,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1382724175, now seen corresponding path program 1 times [2024-06-21 18:41:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646238348] [2024-06-21 18:41:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646238348] [2024-06-21 18:41:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646238348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:52,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:41:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777528205] [2024-06-21 18:41:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:41:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:41:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:41:52,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:41:52,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 557 transitions, 5584 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:52,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:52,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:41:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:53,246 INFO L124 PetriNetUnfolderBase]: 1216/2095 cut-off events. [2024-06-21 18:41:53,247 INFO L125 PetriNetUnfolderBase]: For 920667/920667 co-relation queries the response was YES. [2024-06-21 18:41:53,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19546 conditions, 2095 events. 1216/2095 cut-off events. For 920667/920667 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 12139 event pairs, 216 based on Foata normal form. 1/2095 useless extension candidates. Maximal degree in co-relation 19266. Up to 1902 conditions per place. [2024-06-21 18:41:53,283 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 509 selfloop transitions, 59 changer transitions 0/570 dead transitions. [2024-06-21 18:41:53,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 570 transitions, 7218 flow [2024-06-21 18:41:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:41:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:41:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 18:41:53,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 18:41:53,285 INFO L175 Difference]: Start difference. First operand has 602 places, 557 transitions, 5584 flow. Second operand 11 states and 131 transitions. [2024-06-21 18:41:53,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 570 transitions, 7218 flow [2024-06-21 18:41:58,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 570 transitions, 7114 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 18:41:58,783 INFO L231 Difference]: Finished difference. Result has 604 places, 557 transitions, 5605 flow [2024-06-21 18:41:58,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5480, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5605, PETRI_PLACES=604, PETRI_TRANSITIONS=557} [2024-06-21 18:41:58,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-21 18:41:58,784 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 557 transitions, 5605 flow [2024-06-21 18:41:58,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:58,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:58,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 18:41:58,784 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:41:58,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1154577257, now seen corresponding path program 25 times [2024-06-21 18:41:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:58,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767025929] [2024-06-21 18:41:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:58,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:42:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:42:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:42:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767025929] [2024-06-21 18:42:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767025929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:42:00,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:42:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:42:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957646572] [2024-06-21 18:42:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:42:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:42:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:42:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:42:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:42:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:42:00,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 557 transitions, 5605 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:42:00,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:42:00,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:42:00,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:42:01,240 INFO L124 PetriNetUnfolderBase]: 1232/2121 cut-off events. [2024-06-21 18:42:01,240 INFO L125 PetriNetUnfolderBase]: For 1003454/1003454 co-relation queries the response was YES. [2024-06-21 18:42:01,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20202 conditions, 2121 events. 1232/2121 cut-off events. For 1003454/1003454 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12309 event pairs, 210 based on Foata normal form. 2/2122 useless extension candidates. Maximal degree in co-relation 19921. Up to 1799 conditions per place. [2024-06-21 18:42:01,282 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 498 selfloop transitions, 82 changer transitions 0/582 dead transitions. [2024-06-21 18:42:01,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 582 transitions, 7826 flow [2024-06-21 18:42:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:42:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:42:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:42:01,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 18:42:01,283 INFO L175 Difference]: Start difference. First operand has 604 places, 557 transitions, 5605 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:42:01,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 582 transitions, 7826 flow [2024-06-21 18:42:06,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 582 transitions, 7693 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 18:42:06,896 INFO L231 Difference]: Finished difference. Result has 604 places, 561 transitions, 5709 flow [2024-06-21 18:42:06,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5476, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5709, PETRI_PLACES=604, PETRI_TRANSITIONS=561} [2024-06-21 18:42:06,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-21 18:42:06,896 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 561 transitions, 5709 flow [2024-06-21 18:42:06,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:42:06,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:42:06,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:42:06,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 18:42:06,897 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:42:06,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:42:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1160839877, now seen corresponding path program 26 times [2024-06-21 18:42:06,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:42:06,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069064153] [2024-06-21 18:42:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:42:06,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:42:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:42:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:42:08,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:42:08,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069064153] [2024-06-21 18:42:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069064153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:42:08,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:42:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:42:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766505676] [2024-06-21 18:42:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:42:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:42:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:42:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:42:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:42:08,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:42:08,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 561 transitions, 5709 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:42:08,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:42:08,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:42:08,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:42:09,703 INFO L124 PetriNetUnfolderBase]: 1248/2147 cut-off events. [2024-06-21 18:42:09,703 INFO L125 PetriNetUnfolderBase]: For 1054047/1054047 co-relation queries the response was YES. [2024-06-21 18:42:09,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20909 conditions, 2147 events. 1248/2147 cut-off events. For 1054047/1054047 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 12470 event pairs, 215 based on Foata normal form. 2/2148 useless extension candidates. Maximal degree in co-relation 20628. Up to 1814 conditions per place. [2024-06-21 18:42:09,748 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 507 selfloop transitions, 77 changer transitions 0/586 dead transitions. [2024-06-21 18:42:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 586 transitions, 8836 flow [2024-06-21 18:42:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:42:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:42:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 18:42:09,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-21 18:42:09,749 INFO L175 Difference]: Start difference. First operand has 604 places, 561 transitions, 5709 flow. Second operand 12 states and 146 transitions. [2024-06-21 18:42:09,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 586 transitions, 8836 flow [2024-06-21 18:42:15,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 586 transitions, 8699 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 18:42:15,699 INFO L231 Difference]: Finished difference. Result has 609 places, 565 transitions, 5804 flow [2024-06-21 18:42:15,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5576, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5804, PETRI_PLACES=609, PETRI_TRANSITIONS=565} [2024-06-21 18:42:15,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-06-21 18:42:15,700 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 565 transitions, 5804 flow [2024-06-21 18:42:15,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:42:15,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:42:15,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:42:15,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-21 18:42:15,700 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:42:15,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:42:15,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1382715557, now seen corresponding path program 27 times [2024-06-21 18:42:15,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:42:15,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631857919] [2024-06-21 18:42:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:42:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:42:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:42:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:42:17,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:42:17,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631857919] [2024-06-21 18:42:17,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631857919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:42:17,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:42:17,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:42:17,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968112616] [2024-06-21 18:42:17,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:42:17,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:42:17,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:42:17,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:42:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:42:17,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-21 18:42:17,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 565 transitions, 5804 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-21 18:42:17,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:42:17,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-21 18:42:17,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:42:18,191 INFO L124 PetriNetUnfolderBase]: 1254/2157 cut-off events. [2024-06-21 18:42:18,192 INFO L125 PetriNetUnfolderBase]: For 1064325/1064325 co-relation queries the response was YES. [2024-06-21 18:42:18,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21012 conditions, 2157 events. 1254/2157 cut-off events. For 1064325/1064325 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 12538 event pairs, 220 based on Foata normal form. 2/2158 useless extension candidates. Maximal degree in co-relation 20730. Up to 1820 conditions per place. [2024-06-21 18:42:18,235 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 508 selfloop transitions, 75 changer transitions 0/585 dead transitions. [2024-06-21 18:42:18,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 585 transitions, 8438 flow [2024-06-21 18:42:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:42:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:42:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 18:42:18,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 18:42:18,237 INFO L175 Difference]: Start difference. First operand has 609 places, 565 transitions, 5804 flow. Second operand 12 states and 147 transitions. [2024-06-21 18:42:18,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 585 transitions, 8438 flow Killed by 15