./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 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/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-7724a2d-m [2024-06-27 23:14:52,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:14:52,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:14:52,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:14:52,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:14:52,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:14:52,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:14:52,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:14:52,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:14:52,828 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:14:52,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:14:52,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:14:52,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:14:52,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:14:52,831 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:14:52,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:14:52,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:14:52,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:14:52,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:14:52,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:14:52,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:14:52,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:14:52,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:14:52,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:14:52,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:14:52,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:14:52,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:14:52,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:14:52,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:14:52,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:14:52,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:14:52,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:14:52,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:14:52,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:14:52,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:14:52,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:14:52,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:14:52,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:14:52,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:14:52,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:14:52,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:14:52,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:14:52,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:14:52,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:14:53,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:14:53,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:14:53,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:14:53,086 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:14:53,086 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:14:53,087 INFO L431 ainManager$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 [2024-06-27 23:14:53,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:14:53,218 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:14:53,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 23:14:54,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:14:54,513 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:14:54,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 23:14:54,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3546553d8/fca6ab0c2bb7422ca2ece7a28b2c9b41/FLAG1b8c03c5a [2024-06-27 23:14:54,539 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3546553d8/fca6ab0c2bb7422ca2ece7a28b2c9b41 [2024-06-27 23:14:54,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:14:54,541 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:14:54,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:14:54,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:14:54,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:14:54,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:14:53" (1/2) ... [2024-06-27 23:14:54,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9d0a33 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:14:54, skipping insertion in model container [2024-06-27 23:14:54,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:14:53" (1/2) ... [2024-06-27 23:14:54,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25928899 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:14:54, skipping insertion in model container [2024-06-27 23:14:54,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:14:54" (2/2) ... [2024-06-27 23:14:54,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9d0a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:54, skipping insertion in model container [2024-06-27 23:14:54,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:14:54" (2/2) ... [2024-06-27 23:14:54,549 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:14:54,573 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:14:54,574 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$w_buff1_used >= 0LL) [2024-06-27 23:14:54,574 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z$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) [2024-06-27 23:14:54,574 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:14:54,574 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-27 23:14:54,606 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:14:55,017 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:14:55,033 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:14:55,166 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:14:55,195 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:14:55,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55 WrapperNode [2024-06-27 23:14:55,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:14:55,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:14:55,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:14:55,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:14:55,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,277 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 122 [2024-06-27 23:14:55,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:14:55,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:14:55,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:14:55,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:14:55,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,324 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:14:55,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:14:55,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:14:55,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:14:55,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:14:55,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (1/1) ... [2024-06-27 23:14:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:14:55,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:14:55,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:14:55,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:14:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:14:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:14:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:14:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:14:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:14:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:14:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:14:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:14:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:14:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:14:55,458 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:14:55,543 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:14:55,545 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:14:55,931 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:14:55,931 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:14:56,120 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:14:56,120 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:14:56,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:14:56 BoogieIcfgContainer [2024-06-27 23:14:56,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:14:56,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:14:56,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:14:56,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:14:56,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:14:53" (1/4) ... [2024-06-27 23:14:56,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea90cc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:14:56, skipping insertion in model container [2024-06-27 23:14:56,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:14:54" (2/4) ... [2024-06-27 23:14:56,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea90cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:14:56, skipping insertion in model container [2024-06-27 23:14:56,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:14:55" (3/4) ... [2024-06-27 23:14:56,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea90cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:14:56, skipping insertion in model container [2024-06-27 23:14:56,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:14:56" (4/4) ... [2024-06-27 23:14:56,134 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-27 23:14:56,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:14:56,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:14:56,147 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:14:56,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:14:56,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 23:14:56,247 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 23:14:56,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:14:56,249 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. [2024-06-27 23:14:56,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 23:14:56,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 23:14:56,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:14:56,271 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;@2a6e8db5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:14:56,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:14:56,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:14:56,274 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:14:56,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:14:56,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:56,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:14:56,276 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)] === [2024-06-27 23:14:56,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash 337095837, now seen corresponding path program 1 times [2024-06-27 23:14:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123623507] [2024-06-27 23:14:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:56,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123623507] [2024-06-27 23:14:57,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123623507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:57,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:14:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8237415] [2024-06-27 23:14:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:57,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:14:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:57,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:14:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:14:57,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 23:14:57,585 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) [2024-06-27 23:14:57,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:57,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 23:14:57,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:57,736 INFO L124 PetriNetUnfolderBase]: 162/314 cut-off events. [2024-06-27 23:14:57,736 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:14:57,739 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. [2024-06-27 23:14:57,742 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 23:14:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-27 23:14:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:14:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:14:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-27 23:14:57,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 23:14:57,753 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-27 23:14:57,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-27 23:14:57,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:14:57,757 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 23:14:57,758 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} [2024-06-27 23:14:57,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 23:14:57,761 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 23:14:57,761 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) [2024-06-27 23:14:57,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:57,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:57,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:14:57,762 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)] === [2024-06-27 23:14:57,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1826570300, now seen corresponding path program 1 times [2024-06-27 23:14:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:57,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396786475] [2024-06-27 23:14:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396786475] [2024-06-27 23:14:58,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396786475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:58,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:58,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:14:58,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782105053] [2024-06-27 23:14:58,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:14:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:14:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:14:58,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 23:14:58,798 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) [2024-06-27 23:14:58,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:58,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 23:14:58,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:58,893 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-27 23:14:58,893 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-06-27 23:14:58,894 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. [2024-06-27 23:14:58,895 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 23:14:58,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2024-06-27 23:14:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:14:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:14:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-06-27 23:14:58,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 23:14:58,897 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 76 transitions. [2024-06-27 23:14:58,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2024-06-27 23:14:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:14:58,899 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 23:14:58,899 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} [2024-06-27 23:14:58,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 23:14:58,900 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 23:14:58,900 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) [2024-06-27 23:14:58,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:58,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:58,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:14:58,901 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)] === [2024-06-27 23:14:58,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 789105080, now seen corresponding path program 1 times [2024-06-27 23:14:58,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:58,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386705855] [2024-06-27 23:14:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:59,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386705855] [2024-06-27 23:14:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386705855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:59,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:14:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560403694] [2024-06-27 23:14:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:14:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:14:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:14:59,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:14:59,835 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) [2024-06-27 23:14:59,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:59,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:14:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:59,976 INFO L124 PetriNetUnfolderBase]: 187/359 cut-off events. [2024-06-27 23:14:59,977 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-06-27 23:14:59,978 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. [2024-06-27 23:14:59,979 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 23:14:59,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 209 flow [2024-06-27 23:14:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:14:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:14:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-27 23:14:59,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-27 23:14:59,981 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 89 transitions. [2024-06-27 23:14:59,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 209 flow [2024-06-27 23:14:59,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:14:59,983 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-27 23:14:59,983 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} [2024-06-27 23:14:59,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 23:14:59,984 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-27 23:14:59,984 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) [2024-06-27 23:14:59,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:59,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:59,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:14:59,985 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)] === [2024-06-27 23:14:59,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:59,985 INFO L85 PathProgramCache]: Analyzing trace with hash -670316147, now seen corresponding path program 1 times [2024-06-27 23:14:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648398297] [2024-06-27 23:14:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648398297] [2024-06-27 23:15:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648398297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:00,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568382853] [2024-06-27 23:15:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:15:00,989 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) [2024-06-27 23:15:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:15:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:01,107 INFO L124 PetriNetUnfolderBase]: 184/356 cut-off events. [2024-06-27 23:15:01,107 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-27 23:15:01,108 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. [2024-06-27 23:15:01,109 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-27 23:15:01,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 257 flow [2024-06-27 23:15:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 23:15:01,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 23:15:01,112 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 105 transitions. [2024-06-27 23:15:01,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 257 flow [2024-06-27 23:15:01,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 242 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:01,114 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-27 23:15:01,114 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} [2024-06-27 23:15:01,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-27 23:15:01,115 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-27 23:15:01,115 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) [2024-06-27 23:15:01,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:01,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:01,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:15:01,115 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)] === [2024-06-27 23:15:01,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2063748116, now seen corresponding path program 1 times [2024-06-27 23:15:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:01,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214594961] [2024-06-27 23:15:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:02,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214594961] [2024-06-27 23:15:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214594961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:02,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:02,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:15:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352997054] [2024-06-27 23:15:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:02,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:15:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:15:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:15:02,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:02,472 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) [2024-06-27 23:15:02,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:02,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:02,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:02,749 INFO L124 PetriNetUnfolderBase]: 230/423 cut-off events. [2024-06-27 23:15:02,749 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-06-27 23:15:02,750 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. [2024-06-27 23:15:02,752 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-27 23:15:02,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 243 flow [2024-06-27 23:15:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:15:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:15:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-06-27 23:15:02,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 23:15:02,755 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 67 transitions. [2024-06-27 23:15:02,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 243 flow [2024-06-27 23:15:02,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 220 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:02,760 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 168 flow [2024-06-27 23:15:02,760 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} [2024-06-27 23:15:02,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-27 23:15:02,763 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 168 flow [2024-06-27 23:15:02,764 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) [2024-06-27 23:15:02,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:02,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:15:02,769 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)] === [2024-06-27 23:15:02,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1874082682, now seen corresponding path program 1 times [2024-06-27 23:15:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:02,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560994863] [2024-06-27 23:15:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:03,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:03,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560994863] [2024-06-27 23:15:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560994863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:03,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795234139] [2024-06-27 23:15:03,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:03,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:03,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:15:03,992 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) [2024-06-27 23:15:03,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:03,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:15:03,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:04,175 INFO L124 PetriNetUnfolderBase]: 223/414 cut-off events. [2024-06-27 23:15:04,176 INFO L125 PetriNetUnfolderBase]: For 890/890 co-relation queries the response was YES. [2024-06-27 23:15:04,177 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. [2024-06-27 23:15:04,179 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 14 changer transitions 0/63 dead transitions. [2024-06-27 23:15:04,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 370 flow [2024-06-27 23:15:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 23:15:04,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 23:15:04,182 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 168 flow. Second operand 8 states and 130 transitions. [2024-06-27 23:15:04,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 370 flow [2024-06-27 23:15:04,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:04,184 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 219 flow [2024-06-27 23:15:04,184 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} [2024-06-27 23:15:04,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-27 23:15:04,185 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 219 flow [2024-06-27 23:15:04,185 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) [2024-06-27 23:15:04,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:04,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:04,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:15:04,186 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)] === [2024-06-27 23:15:04,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash 448318990, now seen corresponding path program 1 times [2024-06-27 23:15:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508942305] [2024-06-27 23:15:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508942305] [2024-06-27 23:15:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508942305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:05,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414752390] [2024-06-27 23:15:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:05,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:05,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:05,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:05,617 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) [2024-06-27 23:15:05,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:05,914 INFO L124 PetriNetUnfolderBase]: 220/408 cut-off events. [2024-06-27 23:15:05,914 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2024-06-27 23:15:05,915 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. [2024-06-27 23:15:05,917 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-27 23:15:05,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 333 flow [2024-06-27 23:15:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 23:15:05,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-27 23:15:05,919 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 219 flow. Second operand 7 states and 86 transitions. [2024-06-27 23:15:05,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 333 flow [2024-06-27 23:15:05,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 302 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:05,922 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 225 flow [2024-06-27 23:15:05,922 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} [2024-06-27 23:15:05,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-27 23:15:05,923 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 225 flow [2024-06-27 23:15:05,923 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) [2024-06-27 23:15:05,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:05,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:05,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:15:05,924 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)] === [2024-06-27 23:15:05,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 458598549, now seen corresponding path program 1 times [2024-06-27 23:15:05,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:05,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305443367] [2024-06-27 23:15:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305443367] [2024-06-27 23:15:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305443367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267065912] [2024-06-27 23:15:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:07,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:07,094 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) [2024-06-27 23:15:07,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:07,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:07,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:07,282 INFO L124 PetriNetUnfolderBase]: 234/431 cut-off events. [2024-06-27 23:15:07,282 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-06-27 23:15:07,283 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. [2024-06-27 23:15:07,285 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-27 23:15:07,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 385 flow [2024-06-27 23:15:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-27 23:15:07,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:15:07,289 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 225 flow. Second operand 6 states and 81 transitions. [2024-06-27 23:15:07,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 385 flow [2024-06-27 23:15:07,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 362 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:07,293 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 273 flow [2024-06-27 23:15:07,293 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} [2024-06-27 23:15:07,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-27 23:15:07,295 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 273 flow [2024-06-27 23:15:07,295 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) [2024-06-27 23:15:07,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:07,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:07,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:15:07,296 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)] === [2024-06-27 23:15:07,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1032092349, now seen corresponding path program 2 times [2024-06-27 23:15:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90115919] [2024-06-27 23:15:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:08,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:08,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90115919] [2024-06-27 23:15:08,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90115919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:08,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:08,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:08,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107488332] [2024-06-27 23:15:08,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:08,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:08,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:08,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:08,338 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) [2024-06-27 23:15:08,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:08,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:08,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:08,527 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2024-06-27 23:15:08,528 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2024-06-27 23:15:08,529 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. [2024-06-27 23:15:08,530 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-27 23:15:08,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 383 flow [2024-06-27 23:15:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:15:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:15:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 23:15:08,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 23:15:08,532 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 273 flow. Second operand 6 states and 77 transitions. [2024-06-27 23:15:08,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 383 flow [2024-06-27 23:15:08,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 368 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:08,536 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 283 flow [2024-06-27 23:15:08,537 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} [2024-06-27 23:15:08,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-27 23:15:08,537 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 283 flow [2024-06-27 23:15:08,538 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) [2024-06-27 23:15:08,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:08,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:08,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:15:08,538 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)] === [2024-06-27 23:15:08,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:08,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2032978250, now seen corresponding path program 1 times [2024-06-27 23:15:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:08,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675162050] [2024-06-27 23:15:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:08,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:10,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:10,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675162050] [2024-06-27 23:15:10,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675162050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161209670] [2024-06-27 23:15:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:10,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:15:10,224 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) [2024-06-27 23:15:10,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:10,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:15:10,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:10,515 INFO L124 PetriNetUnfolderBase]: 226/418 cut-off events. [2024-06-27 23:15:10,515 INFO L125 PetriNetUnfolderBase]: For 2179/2179 co-relation queries the response was YES. [2024-06-27 23:15:10,516 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. [2024-06-27 23:15:10,518 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 48 selfloop transitions, 18 changer transitions 0/72 dead transitions. [2024-06-27 23:15:10,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 475 flow [2024-06-27 23:15:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:15:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:15:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 23:15:10,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:15:10,519 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 283 flow. Second operand 10 states and 140 transitions. [2024-06-27 23:15:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 475 flow [2024-06-27 23:15:10,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 456 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:10,522 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 292 flow [2024-06-27 23:15:10,523 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} [2024-06-27 23:15:10,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 23:15:10,524 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 292 flow [2024-06-27 23:15:10,524 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) [2024-06-27 23:15:10,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:10,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:10,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:15:10,525 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)] === [2024-06-27 23:15:10,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2018282413, now seen corresponding path program 3 times [2024-06-27 23:15:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:10,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895573684] [2024-06-27 23:15:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:11,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:11,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895573684] [2024-06-27 23:15:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895573684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:11,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:11,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:11,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909703942] [2024-06-27 23:15:11,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:11,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:11,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:11,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:11,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:11,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:11,815 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) [2024-06-27 23:15:11,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:11,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:11,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:12,077 INFO L124 PetriNetUnfolderBase]: 226/417 cut-off events. [2024-06-27 23:15:12,078 INFO L125 PetriNetUnfolderBase]: For 2437/2437 co-relation queries the response was YES. [2024-06-27 23:15:12,079 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. [2024-06-27 23:15:12,080 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-27 23:15:12,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 454 flow [2024-06-27 23:15:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:15:12,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:15:12,082 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 292 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:15:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 454 flow [2024-06-27 23:15:12,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 408 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:12,086 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 327 flow [2024-06-27 23:15:12,086 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} [2024-06-27 23:15:12,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 23:15:12,087 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 327 flow [2024-06-27 23:15:12,087 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) [2024-06-27 23:15:12,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:12,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:12,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:15:12,087 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)] === [2024-06-27 23:15:12,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1103573389, now seen corresponding path program 1 times [2024-06-27 23:15:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:12,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506113511] [2024-06-27 23:15:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:12,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:13,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506113511] [2024-06-27 23:15:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506113511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:13,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:13,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:13,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762745587] [2024-06-27 23:15:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:13,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:13,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:13,347 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) [2024-06-27 23:15:13,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:13,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:13,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:13,510 INFO L124 PetriNetUnfolderBase]: 254/454 cut-off events. [2024-06-27 23:15:13,510 INFO L125 PetriNetUnfolderBase]: For 3072/3072 co-relation queries the response was YES. [2024-06-27 23:15:13,511 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. [2024-06-27 23:15:13,513 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-27 23:15:13,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 536 flow [2024-06-27 23:15:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 23:15:13,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-27 23:15:13,514 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 327 flow. Second operand 7 states and 86 transitions. [2024-06-27 23:15:13,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 536 flow [2024-06-27 23:15:13,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 504 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:13,518 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 386 flow [2024-06-27 23:15:13,518 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} [2024-06-27 23:15:13,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-27 23:15:13,519 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 386 flow [2024-06-27 23:15:13,519 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) [2024-06-27 23:15:13,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:13,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:13,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:15:13,519 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)] === [2024-06-27 23:15:13,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash -375418677, now seen corresponding path program 2 times [2024-06-27 23:15:13,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:13,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154422046] [2024-06-27 23:15:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:13,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154422046] [2024-06-27 23:15:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154422046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:14,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:14,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565582274] [2024-06-27 23:15:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:14,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:14,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:14,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:14,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:14,709 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) [2024-06-27 23:15:14,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:14,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:14,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:14,853 INFO L124 PetriNetUnfolderBase]: 257/459 cut-off events. [2024-06-27 23:15:14,853 INFO L125 PetriNetUnfolderBase]: For 3661/3661 co-relation queries the response was YES. [2024-06-27 23:15:14,854 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. [2024-06-27 23:15:14,856 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2024-06-27 23:15:14,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 578 flow [2024-06-27 23:15:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 23:15:14,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-27 23:15:14,857 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 386 flow. Second operand 7 states and 86 transitions. [2024-06-27 23:15:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 578 flow [2024-06-27 23:15:14,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 550 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:14,863 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 419 flow [2024-06-27 23:15:14,863 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} [2024-06-27 23:15:14,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-27 23:15:14,864 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 419 flow [2024-06-27 23:15:14,864 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) [2024-06-27 23:15:14,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:14,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:15:14,864 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)] === [2024-06-27 23:15:14,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -375418429, now seen corresponding path program 1 times [2024-06-27 23:15:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876659742] [2024-06-27 23:15:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:16,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876659742] [2024-06-27 23:15:16,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876659742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:16,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:16,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118155311] [2024-06-27 23:15:16,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:16,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:16,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:16,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:16,093 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) [2024-06-27 23:15:16,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:16,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:16,352 INFO L124 PetriNetUnfolderBase]: 268/485 cut-off events. [2024-06-27 23:15:16,353 INFO L125 PetriNetUnfolderBase]: For 4680/4686 co-relation queries the response was YES. [2024-06-27 23:15:16,354 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. [2024-06-27 23:15:16,355 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-27 23:15:16,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 641 flow [2024-06-27 23:15:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 23:15:16,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:15:16,357 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 419 flow. Second operand 7 states and 96 transitions. [2024-06-27 23:15:16,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 641 flow [2024-06-27 23:15:16,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 608 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:16,361 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 470 flow [2024-06-27 23:15:16,361 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} [2024-06-27 23:15:16,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-27 23:15:16,362 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 470 flow [2024-06-27 23:15:16,362 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) [2024-06-27 23:15:16,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:16,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:16,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:15:16,362 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)] === [2024-06-27 23:15:16,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1930101263, now seen corresponding path program 2 times [2024-06-27 23:15:16,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:16,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245925193] [2024-06-27 23:15:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:16,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245925193] [2024-06-27 23:15:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245925193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974510709] [2024-06-27 23:15:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:17,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:17,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:17,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:17,424 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) [2024-06-27 23:15:17,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:17,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:17,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:17,672 INFO L124 PetriNetUnfolderBase]: 277/500 cut-off events. [2024-06-27 23:15:17,672 INFO L125 PetriNetUnfolderBase]: For 5490/5496 co-relation queries the response was YES. [2024-06-27 23:15:17,673 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. [2024-06-27 23:15:17,675 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-27 23:15:17,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 640 flow [2024-06-27 23:15:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:15:17,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 23:15:17,676 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 470 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:15:17,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 640 flow [2024-06-27 23:15:17,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 626 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:17,681 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 505 flow [2024-06-27 23:15:17,681 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} [2024-06-27 23:15:17,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-27 23:15:17,682 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 505 flow [2024-06-27 23:15:17,682 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) [2024-06-27 23:15:17,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:17,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:17,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:15:17,682 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)] === [2024-06-27 23:15:17,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:17,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1337549903, now seen corresponding path program 3 times [2024-06-27 23:15:17,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:17,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258611986] [2024-06-27 23:15:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:17,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258611986] [2024-06-27 23:15:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258611986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:18,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:18,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835655453] [2024-06-27 23:15:18,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:18,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:18,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:18,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:18,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:18,825 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) [2024-06-27 23:15:18,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:18,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:19,096 INFO L124 PetriNetUnfolderBase]: 271/491 cut-off events. [2024-06-27 23:15:19,096 INFO L125 PetriNetUnfolderBase]: For 5901/5907 co-relation queries the response was YES. [2024-06-27 23:15:19,098 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. [2024-06-27 23:15:19,100 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-27 23:15:19,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 77 transitions, 669 flow [2024-06-27 23:15:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:15:19,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-27 23:15:19,102 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 505 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:15:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 77 transitions, 669 flow [2024-06-27 23:15:19,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 632 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:19,108 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 503 flow [2024-06-27 23:15:19,108 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} [2024-06-27 23:15:19,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-27 23:15:19,109 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 503 flow [2024-06-27 23:15:19,109 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) [2024-06-27 23:15:19,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:19,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:19,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:15:19,110 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)] === [2024-06-27 23:15:19,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1339928239, now seen corresponding path program 3 times [2024-06-27 23:15:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:19,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592011493] [2024-06-27 23:15:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:20,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592011493] [2024-06-27 23:15:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592011493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:20,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648381152] [2024-06-27 23:15:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:20,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:20,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:20,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:20,177 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) [2024-06-27 23:15:20,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:20,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:20,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:20,372 INFO L124 PetriNetUnfolderBase]: 282/501 cut-off events. [2024-06-27 23:15:20,372 INFO L125 PetriNetUnfolderBase]: For 6215/6215 co-relation queries the response was YES. [2024-06-27 23:15:20,374 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. [2024-06-27 23:15:20,376 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-27 23:15:20,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 659 flow [2024-06-27 23:15:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 23:15:20,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 23:15:20,378 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 503 flow. Second operand 7 states and 80 transitions. [2024-06-27 23:15:20,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 659 flow [2024-06-27 23:15:20,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 610 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:20,385 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 483 flow [2024-06-27 23:15:20,386 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} [2024-06-27 23:15:20,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-27 23:15:20,386 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 483 flow [2024-06-27 23:15:20,386 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) [2024-06-27 23:15:20,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:20,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:20,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:15:20,387 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)] === [2024-06-27 23:15:20,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1128913915, now seen corresponding path program 4 times [2024-06-27 23:15:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:20,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089578989] [2024-06-27 23:15:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089578989] [2024-06-27 23:15:21,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089578989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:21,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:21,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853590680] [2024-06-27 23:15:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:21,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:21,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:21,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:21,689 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) [2024-06-27 23:15:21,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:21,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:21,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:21,993 INFO L124 PetriNetUnfolderBase]: 289/513 cut-off events. [2024-06-27 23:15:21,993 INFO L125 PetriNetUnfolderBase]: For 6857/6857 co-relation queries the response was YES. [2024-06-27 23:15:21,996 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. [2024-06-27 23:15:22,000 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 30 changer transitions 0/87 dead transitions. [2024-06-27 23:15:22,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 774 flow [2024-06-27 23:15:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:15:22,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-27 23:15:22,001 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 483 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:15:22,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 774 flow [2024-06-27 23:15:22,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 751 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:22,010 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 606 flow [2024-06-27 23:15:22,010 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} [2024-06-27 23:15:22,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-27 23:15:22,011 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 606 flow [2024-06-27 23:15:22,012 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) [2024-06-27 23:15:22,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:22,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:22,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:15:22,012 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)] === [2024-06-27 23:15:22,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1875807829, now seen corresponding path program 5 times [2024-06-27 23:15:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:22,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811942500] [2024-06-27 23:15:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:23,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:23,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811942500] [2024-06-27 23:15:23,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811942500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:23,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465884755] [2024-06-27 23:15:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:23,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:23,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:23,565 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) [2024-06-27 23:15:23,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:23,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:23,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:23,937 INFO L124 PetriNetUnfolderBase]: 292/518 cut-off events. [2024-06-27 23:15:23,937 INFO L125 PetriNetUnfolderBase]: For 7871/7871 co-relation queries the response was YES. [2024-06-27 23:15:23,938 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. [2024-06-27 23:15:23,941 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 57 selfloop transitions, 30 changer transitions 0/89 dead transitions. [2024-06-27 23:15:23,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 882 flow [2024-06-27 23:15:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:15:23,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:15:23,942 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 606 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:15:23,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 882 flow [2024-06-27 23:15:23,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 835 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:23,950 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 658 flow [2024-06-27 23:15:23,950 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} [2024-06-27 23:15:23,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-27 23:15:23,951 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 658 flow [2024-06-27 23:15:23,951 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) [2024-06-27 23:15:23,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:23,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:15:23,952 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)] === [2024-06-27 23:15:23,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1857148061, now seen corresponding path program 4 times [2024-06-27 23:15:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199795121] [2024-06-27 23:15:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:23,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199795121] [2024-06-27 23:15:25,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199795121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:25,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:25,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405193659] [2024-06-27 23:15:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:25,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:25,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:25,406 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) [2024-06-27 23:15:25,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:25,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:25,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:25,791 INFO L124 PetriNetUnfolderBase]: 274/499 cut-off events. [2024-06-27 23:15:25,792 INFO L125 PetriNetUnfolderBase]: For 8326/8326 co-relation queries the response was YES. [2024-06-27 23:15:25,793 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. [2024-06-27 23:15:25,796 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-27 23:15:25,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 877 flow [2024-06-27 23:15:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:15:25,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-27 23:15:25,799 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 658 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:15:25,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 877 flow [2024-06-27 23:15:25,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 806 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:25,809 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 692 flow [2024-06-27 23:15:25,809 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} [2024-06-27 23:15:25,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 23:15:25,810 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 692 flow [2024-06-27 23:15:25,810 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) [2024-06-27 23:15:25,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:25,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:25,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:15:25,811 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)] === [2024-06-27 23:15:25,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 834149927, now seen corresponding path program 6 times [2024-06-27 23:15:25,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:25,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856019215] [2024-06-27 23:15:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856019215] [2024-06-27 23:15:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856019215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:27,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760056128] [2024-06-27 23:15:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:27,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:27,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:27,117 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) [2024-06-27 23:15:27,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:27,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:27,451 INFO L124 PetriNetUnfolderBase]: 288/512 cut-off events. [2024-06-27 23:15:27,451 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2024-06-27 23:15:27,453 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. [2024-06-27 23:15:27,455 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 31 changer transitions 0/93 dead transitions. [2024-06-27 23:15:27,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 900 flow [2024-06-27 23:15:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:15:27,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-27 23:15:27,457 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 692 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:15:27,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 900 flow [2024-06-27 23:15:27,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 870 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:27,468 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 729 flow [2024-06-27 23:15:27,469 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} [2024-06-27 23:15:27,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-27 23:15:27,469 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 729 flow [2024-06-27 23:15:27,469 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) [2024-06-27 23:15:27,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:27,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:27,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:15:27,470 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)] === [2024-06-27 23:15:27,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash -25780858, now seen corresponding path program 1 times [2024-06-27 23:15:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401576324] [2024-06-27 23:15:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:28,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:28,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401576324] [2024-06-27 23:15:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401576324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:28,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214431412] [2024-06-27 23:15:28,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:28,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:28,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:28,781 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) [2024-06-27 23:15:28,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:28,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:28,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:28,987 INFO L124 PetriNetUnfolderBase]: 300/533 cut-off events. [2024-06-27 23:15:28,988 INFO L125 PetriNetUnfolderBase]: For 10287/10287 co-relation queries the response was YES. [2024-06-27 23:15:28,990 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. [2024-06-27 23:15:28,994 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 25 changer transitions 0/100 dead transitions. [2024-06-27 23:15:28,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 1035 flow [2024-06-27 23:15:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:15:28,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 23:15:28,996 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 729 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:15:28,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 1035 flow [2024-06-27 23:15:29,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 981 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:29,008 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 784 flow [2024-06-27 23:15:29,008 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} [2024-06-27 23:15:29,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-27 23:15:29,009 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 784 flow [2024-06-27 23:15:29,009 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) [2024-06-27 23:15:29,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:29,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:29,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:15:29,009 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)] === [2024-06-27 23:15:29,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash -148962163, now seen corresponding path program 1 times [2024-06-27 23:15:29,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:29,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212368676] [2024-06-27 23:15:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:29,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212368676] [2024-06-27 23:15:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212368676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:30,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:30,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482001240] [2024-06-27 23:15:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:30,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:30,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:30,221 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) [2024-06-27 23:15:30,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:30,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:30,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:30,495 INFO L124 PetriNetUnfolderBase]: 324/572 cut-off events. [2024-06-27 23:15:30,496 INFO L125 PetriNetUnfolderBase]: For 12426/12426 co-relation queries the response was YES. [2024-06-27 23:15:30,501 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. [2024-06-27 23:15:30,504 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-27 23:15:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 1108 flow [2024-06-27 23:15:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:15:30,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 23:15:30,505 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 784 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:15:30,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 1108 flow [2024-06-27 23:15:30,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 1068 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:30,517 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 837 flow [2024-06-27 23:15:30,517 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} [2024-06-27 23:15:30,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-27 23:15:30,517 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 837 flow [2024-06-27 23:15:30,517 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) [2024-06-27 23:15:30,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:30,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:30,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:15:30,518 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)] === [2024-06-27 23:15:30,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -148962380, now seen corresponding path program 2 times [2024-06-27 23:15:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430393486] [2024-06-27 23:15:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:31,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430393486] [2024-06-27 23:15:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430393486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:31,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:31,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761411733] [2024-06-27 23:15:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:31,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:31,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:31,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:31,640 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) [2024-06-27 23:15:31,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:31,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:31,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:31,841 INFO L124 PetriNetUnfolderBase]: 327/577 cut-off events. [2024-06-27 23:15:31,841 INFO L125 PetriNetUnfolderBase]: For 13087/13087 co-relation queries the response was YES. [2024-06-27 23:15:31,843 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. [2024-06-27 23:15:31,845 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-27 23:15:31,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 105 transitions, 1131 flow [2024-06-27 23:15:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:15:31,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 23:15:31,848 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 837 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:15:31,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 105 transitions, 1131 flow [2024-06-27 23:15:31,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 105 transitions, 1093 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:31,859 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 870 flow [2024-06-27 23:15:31,860 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} [2024-06-27 23:15:31,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-27 23:15:31,860 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 870 flow [2024-06-27 23:15:31,860 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) [2024-06-27 23:15:31,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:31,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:31,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:15:31,861 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)] === [2024-06-27 23:15:31,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1246931487, now seen corresponding path program 2 times [2024-06-27 23:15:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970469422] [2024-06-27 23:15:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970469422] [2024-06-27 23:15:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970469422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:32,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899880504] [2024-06-27 23:15:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:33,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:33,038 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) [2024-06-27 23:15:33,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:33,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:33,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:33,269 INFO L124 PetriNetUnfolderBase]: 351/616 cut-off events. [2024-06-27 23:15:33,269 INFO L125 PetriNetUnfolderBase]: For 15616/15616 co-relation queries the response was YES. [2024-06-27 23:15:33,271 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. [2024-06-27 23:15:33,276 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 30 changer transitions 0/116 dead transitions. [2024-06-27 23:15:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 116 transitions, 1275 flow [2024-06-27 23:15:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:15:33,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:15:33,278 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 870 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:15:33,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 116 transitions, 1275 flow [2024-06-27 23:15:33,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 116 transitions, 1232 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:33,295 INFO L231 Difference]: Finished difference. Result has 117 places, 99 transitions, 921 flow [2024-06-27 23:15:33,295 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} [2024-06-27 23:15:33,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-27 23:15:33,295 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 921 flow [2024-06-27 23:15:33,295 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) [2024-06-27 23:15:33,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:33,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:33,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:15:33,296 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)] === [2024-06-27 23:15:33,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1246923830, now seen corresponding path program 3 times [2024-06-27 23:15:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655097908] [2024-06-27 23:15:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655097908] [2024-06-27 23:15:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655097908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:34,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:34,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609606876] [2024-06-27 23:15:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:34,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:34,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:34,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:34,546 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) [2024-06-27 23:15:34,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:34,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:34,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:34,787 INFO L124 PetriNetUnfolderBase]: 354/621 cut-off events. [2024-06-27 23:15:34,787 INFO L125 PetriNetUnfolderBase]: For 16314/16314 co-relation queries the response was YES. [2024-06-27 23:15:34,789 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. [2024-06-27 23:15:34,791 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 82 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-27 23:15:34,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 1227 flow [2024-06-27 23:15:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:15:34,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 23:15:34,792 INFO L175 Difference]: Start difference. First operand has 117 places, 99 transitions, 921 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:15:34,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 1227 flow [2024-06-27 23:15:34,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 1184 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:34,807 INFO L231 Difference]: Finished difference. Result has 121 places, 101 transitions, 953 flow [2024-06-27 23:15:34,808 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} [2024-06-27 23:15:34,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-27 23:15:34,808 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 101 transitions, 953 flow [2024-06-27 23:15:34,808 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) [2024-06-27 23:15:34,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:34,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:34,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:15:34,809 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)] === [2024-06-27 23:15:34,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1246924047, now seen corresponding path program 3 times [2024-06-27 23:15:34,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:34,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991450714] [2024-06-27 23:15:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:34,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:35,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991450714] [2024-06-27 23:15:35,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991450714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:35,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:35,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473974929] [2024-06-27 23:15:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:36,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:36,048 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) [2024-06-27 23:15:36,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:36,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:36,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:36,272 INFO L124 PetriNetUnfolderBase]: 348/612 cut-off events. [2024-06-27 23:15:36,272 INFO L125 PetriNetUnfolderBase]: For 17297/17297 co-relation queries the response was YES. [2024-06-27 23:15:36,274 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. [2024-06-27 23:15:36,276 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 29 changer transitions 0/119 dead transitions. [2024-06-27 23:15:36,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 119 transitions, 1298 flow [2024-06-27 23:15:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:15:36,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-27 23:15:36,278 INFO L175 Difference]: Start difference. First operand has 121 places, 101 transitions, 953 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:15:36,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 119 transitions, 1298 flow [2024-06-27 23:15:36,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 1249 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:36,297 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 967 flow [2024-06-27 23:15:36,297 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} [2024-06-27 23:15:36,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 23:15:36,298 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 967 flow [2024-06-27 23:15:36,298 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) [2024-06-27 23:15:36,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:36,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:36,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:15:36,298 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)] === [2024-06-27 23:15:36,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash -619605644, now seen corresponding path program 1 times [2024-06-27 23:15:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:36,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876502028] [2024-06-27 23:15:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:36,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876502028] [2024-06-27 23:15:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876502028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:37,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:37,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541842413] [2024-06-27 23:15:37,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:37,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:37,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:37,615 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) [2024-06-27 23:15:37,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:37,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:37,945 INFO L124 PetriNetUnfolderBase]: 354/622 cut-off events. [2024-06-27 23:15:37,945 INFO L125 PetriNetUnfolderBase]: For 18257/18257 co-relation queries the response was YES. [2024-06-27 23:15:37,947 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. [2024-06-27 23:15:37,949 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-27 23:15:37,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 112 transitions, 1227 flow [2024-06-27 23:15:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:15:37,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-27 23:15:37,950 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 967 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:15:37,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 112 transitions, 1227 flow [2024-06-27 23:15:37,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 112 transitions, 1162 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:37,969 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 959 flow [2024-06-27 23:15:37,969 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} [2024-06-27 23:15:37,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-27 23:15:37,974 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 959 flow [2024-06-27 23:15:37,974 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) [2024-06-27 23:15:37,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:37,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:37,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:15:37,974 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)] === [2024-06-27 23:15:37,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1402692195, now seen corresponding path program 4 times [2024-06-27 23:15:37,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:37,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191961750] [2024-06-27 23:15:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:39,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191961750] [2024-06-27 23:15:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191961750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:39,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709691970] [2024-06-27 23:15:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:39,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:39,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:39,136 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) [2024-06-27 23:15:39,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:39,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:39,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:39,391 INFO L124 PetriNetUnfolderBase]: 363/637 cut-off events. [2024-06-27 23:15:39,391 INFO L125 PetriNetUnfolderBase]: For 19743/19743 co-relation queries the response was YES. [2024-06-27 23:15:39,394 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. [2024-06-27 23:15:39,396 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 15 changer transitions 0/116 dead transitions. [2024-06-27 23:15:39,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 116 transitions, 1234 flow [2024-06-27 23:15:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 23:15:39,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-27 23:15:39,397 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 959 flow. Second operand 8 states and 93 transitions. [2024-06-27 23:15:39,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 116 transitions, 1234 flow [2024-06-27 23:15:39,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 116 transitions, 1190 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:39,419 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 971 flow [2024-06-27 23:15:39,419 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} [2024-06-27 23:15:39,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-27 23:15:39,420 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 971 flow [2024-06-27 23:15:39,420 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) [2024-06-27 23:15:39,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:39,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:39,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:15:39,421 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)] === [2024-06-27 23:15:39,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:39,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1411888965, now seen corresponding path program 5 times [2024-06-27 23:15:39,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:39,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811409004] [2024-06-27 23:15:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:40,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:40,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811409004] [2024-06-27 23:15:40,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811409004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:40,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:40,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653520495] [2024-06-27 23:15:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:40,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:40,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:40,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:40,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:40,580 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) [2024-06-27 23:15:40,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:40,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:40,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:40,903 INFO L124 PetriNetUnfolderBase]: 372/652 cut-off events. [2024-06-27 23:15:40,905 INFO L125 PetriNetUnfolderBase]: For 21463/21463 co-relation queries the response was YES. [2024-06-27 23:15:40,907 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. [2024-06-27 23:15:40,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 22 changer transitions 0/123 dead transitions. [2024-06-27 23:15:40,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 1343 flow [2024-06-27 23:15:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:15:40,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-27 23:15:40,913 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 971 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:15:40,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 1343 flow [2024-06-27 23:15:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 123 transitions, 1296 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:40,936 INFO L231 Difference]: Finished difference. Result has 128 places, 107 transitions, 1000 flow [2024-06-27 23:15:40,936 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} [2024-06-27 23:15:40,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-27 23:15:40,936 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 107 transitions, 1000 flow [2024-06-27 23:15:40,936 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) [2024-06-27 23:15:40,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:40,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:15:40,937 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)] === [2024-06-27 23:15:40,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1411896405, now seen corresponding path program 6 times [2024-06-27 23:15:40,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520708261] [2024-06-27 23:15:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:40,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:42,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:42,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520708261] [2024-06-27 23:15:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520708261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:42,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:42,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807513149] [2024-06-27 23:15:42,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:42,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:42,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:42,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:42,185 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) [2024-06-27 23:15:42,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:42,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:42,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:42,458 INFO L124 PetriNetUnfolderBase]: 366/643 cut-off events. [2024-06-27 23:15:42,459 INFO L125 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2024-06-27 23:15:42,461 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. [2024-06-27 23:15:42,463 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-06-27 23:15:42,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 120 transitions, 1271 flow [2024-06-27 23:15:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:15:42,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 23:15:42,464 INFO L175 Difference]: Start difference. First operand has 128 places, 107 transitions, 1000 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:15:42,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 120 transitions, 1271 flow [2024-06-27 23:15:42,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1203 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:42,489 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 985 flow [2024-06-27 23:15:42,489 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} [2024-06-27 23:15:42,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-27 23:15:42,490 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 985 flow [2024-06-27 23:15:42,490 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) [2024-06-27 23:15:42,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:42,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:42,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:15:42,491 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)] === [2024-06-27 23:15:42,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1411896622, now seen corresponding path program 4 times [2024-06-27 23:15:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:42,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041457423] [2024-06-27 23:15:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041457423] [2024-06-27 23:15:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041457423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664819961] [2024-06-27 23:15:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:43,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:43,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:43,666 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) [2024-06-27 23:15:43,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:43,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:43,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:44,014 INFO L124 PetriNetUnfolderBase]: 364/640 cut-off events. [2024-06-27 23:15:44,015 INFO L125 PetriNetUnfolderBase]: For 21146/21146 co-relation queries the response was YES. [2024-06-27 23:15:44,017 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. [2024-06-27 23:15:44,019 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2024-06-27 23:15:44,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 114 transitions, 1225 flow [2024-06-27 23:15:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:15:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-27 23:15:44,020 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 985 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:15:44,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 114 transitions, 1225 flow [2024-06-27 23:15:44,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 114 transitions, 1146 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:44,048 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 939 flow [2024-06-27 23:15:44,049 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} [2024-06-27 23:15:44,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-27 23:15:44,050 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 939 flow [2024-06-27 23:15:44,050 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) [2024-06-27 23:15:44,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:44,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:44,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:15:44,050 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)] === [2024-06-27 23:15:44,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 215192504, now seen corresponding path program 5 times [2024-06-27 23:15:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975452942] [2024-06-27 23:15:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:44,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:45,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:45,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975452942] [2024-06-27 23:15:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975452942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:45,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:45,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110046651] [2024-06-27 23:15:45,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:45,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:45,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:45,241 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) [2024-06-27 23:15:45,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:45,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:45,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:45,566 INFO L124 PetriNetUnfolderBase]: 371/652 cut-off events. [2024-06-27 23:15:45,566 INFO L125 PetriNetUnfolderBase]: For 22343/22343 co-relation queries the response was YES. [2024-06-27 23:15:45,568 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. [2024-06-27 23:15:45,570 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 48 changer transitions 0/130 dead transitions. [2024-06-27 23:15:45,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 130 transitions, 1359 flow [2024-06-27 23:15:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:15:45,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:15:45,586 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 939 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:15:45,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 130 transitions, 1359 flow [2024-06-27 23:15:45,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 1332 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:45,613 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 1105 flow [2024-06-27 23:15:45,614 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} [2024-06-27 23:15:45,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-27 23:15:45,614 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 1105 flow [2024-06-27 23:15:45,614 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) [2024-06-27 23:15:45,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:45,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:45,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:15:45,615 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)] === [2024-06-27 23:15:45,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 617964166, now seen corresponding path program 6 times [2024-06-27 23:15:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361060328] [2024-06-27 23:15:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:45,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:46,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361060328] [2024-06-27 23:15:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361060328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:46,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316314067] [2024-06-27 23:15:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:47,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:47,023 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) [2024-06-27 23:15:47,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:47,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:47,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:47,377 INFO L124 PetriNetUnfolderBase]: 383/672 cut-off events. [2024-06-27 23:15:47,377 INFO L125 PetriNetUnfolderBase]: For 24652/24652 co-relation queries the response was YES. [2024-06-27 23:15:47,379 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. [2024-06-27 23:15:47,381 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 46 changer transitions 0/136 dead transitions. [2024-06-27 23:15:47,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 136 transitions, 1614 flow [2024-06-27 23:15:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:15:47,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:15:47,383 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 1105 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:15:47,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 136 transitions, 1614 flow [2024-06-27 23:15:47,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 136 transitions, 1531 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:47,412 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1194 flow [2024-06-27 23:15:47,413 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} [2024-06-27 23:15:47,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-27 23:15:47,413 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1194 flow [2024-06-27 23:15:47,413 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) [2024-06-27 23:15:47,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:47,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:47,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:15:47,414 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)] === [2024-06-27 23:15:47,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 636593926, now seen corresponding path program 7 times [2024-06-27 23:15:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408496759] [2024-06-27 23:15:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408496759] [2024-06-27 23:15:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408496759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:48,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:48,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762383849] [2024-06-27 23:15:48,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:48,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:48,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:48,803 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) [2024-06-27 23:15:48,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:48,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:48,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:49,186 INFO L124 PetriNetUnfolderBase]: 381/669 cut-off events. [2024-06-27 23:15:49,187 INFO L125 PetriNetUnfolderBase]: For 25366/25366 co-relation queries the response was YES. [2024-06-27 23:15:49,189 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. [2024-06-27 23:15:49,192 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 47 changer transitions 0/134 dead transitions. [2024-06-27 23:15:49,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 1562 flow [2024-06-27 23:15:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:15:49,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:15:49,220 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1194 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:15:49,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 1562 flow [2024-06-27 23:15:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 134 transitions, 1480 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:49,260 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 1211 flow [2024-06-27 23:15:49,261 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} [2024-06-27 23:15:49,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-27 23:15:49,261 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 1211 flow [2024-06-27 23:15:49,261 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) [2024-06-27 23:15:49,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:49,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:15:49,262 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)] === [2024-06-27 23:15:49,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash 635988713, now seen corresponding path program 7 times [2024-06-27 23:15:49,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116790089] [2024-06-27 23:15:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:49,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116790089] [2024-06-27 23:15:50,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116790089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865460650] [2024-06-27 23:15:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:50,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:50,673 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) [2024-06-27 23:15:50,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:50,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:50,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:51,049 INFO L124 PetriNetUnfolderBase]: 384/674 cut-off events. [2024-06-27 23:15:51,049 INFO L125 PetriNetUnfolderBase]: For 26862/26862 co-relation queries the response was YES. [2024-06-27 23:15:51,052 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. [2024-06-27 23:15:51,055 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 42 changer transitions 0/144 dead transitions. [2024-06-27 23:15:51,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 1655 flow [2024-06-27 23:15:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:15:51,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:15:51,073 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 1211 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:15:51,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 1655 flow [2024-06-27 23:15:51,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 1569 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:51,108 INFO L231 Difference]: Finished difference. Result has 148 places, 130 transitions, 1311 flow [2024-06-27 23:15:51,108 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} [2024-06-27 23:15:51,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-27 23:15:51,109 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 1311 flow [2024-06-27 23:15:51,109 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) [2024-06-27 23:15:51,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:51,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:51,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:15:51,110 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)] === [2024-06-27 23:15:51,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1979494794, now seen corresponding path program 8 times [2024-06-27 23:15:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:51,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997690736] [2024-06-27 23:15:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997690736] [2024-06-27 23:15:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997690736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569764143] [2024-06-27 23:15:52,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:52,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:52,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:52,729 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) [2024-06-27 23:15:52,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:52,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:52,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:53,161 INFO L124 PetriNetUnfolderBase]: 387/679 cut-off events. [2024-06-27 23:15:53,161 INFO L125 PetriNetUnfolderBase]: For 28525/28525 co-relation queries the response was YES. [2024-06-27 23:15:53,164 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. [2024-06-27 23:15:53,166 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 47 changer transitions 0/147 dead transitions. [2024-06-27 23:15:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 147 transitions, 1744 flow [2024-06-27 23:15:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:15:53,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-27 23:15:53,168 INFO L175 Difference]: Start difference. First operand has 148 places, 130 transitions, 1311 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:15:53,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 147 transitions, 1744 flow [2024-06-27 23:15:53,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1688 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:53,205 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1387 flow [2024-06-27 23:15:53,205 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} [2024-06-27 23:15:53,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-27 23:15:53,206 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1387 flow [2024-06-27 23:15:53,206 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) [2024-06-27 23:15:53,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:53,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:53,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:15:53,206 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)] === [2024-06-27 23:15:53,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1984862754, now seen corresponding path program 9 times [2024-06-27 23:15:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:53,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697541845] [2024-06-27 23:15:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:53,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:54,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697541845] [2024-06-27 23:15:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697541845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:54,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:54,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685012521] [2024-06-27 23:15:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:54,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:54,901 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) [2024-06-27 23:15:54,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:54,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:54,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:55,359 INFO L124 PetriNetUnfolderBase]: 390/684 cut-off events. [2024-06-27 23:15:55,360 INFO L125 PetriNetUnfolderBase]: For 30117/30117 co-relation queries the response was YES. [2024-06-27 23:15:55,362 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. [2024-06-27 23:15:55,364 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 48 changer transitions 0/148 dead transitions. [2024-06-27 23:15:55,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 148 transitions, 1813 flow [2024-06-27 23:15:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:15:55,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-27 23:15:55,366 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1387 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:15:55,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 148 transitions, 1813 flow [2024-06-27 23:15:55,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1696 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:55,407 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1397 flow [2024-06-27 23:15:55,407 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} [2024-06-27 23:15:55,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-27 23:15:55,408 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1397 flow [2024-06-27 23:15:55,408 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) [2024-06-27 23:15:55,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:55,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:55,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:15:55,408 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)] === [2024-06-27 23:15:55,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1979500591, now seen corresponding path program 8 times [2024-06-27 23:15:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:55,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826778019] [2024-06-27 23:15:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:55,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826778019] [2024-06-27 23:15:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826778019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470301223] [2024-06-27 23:15:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:56,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:57,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:15:57,018 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) [2024-06-27 23:15:57,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:57,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:15:57,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:57,499 INFO L124 PetriNetUnfolderBase]: 393/689 cut-off events. [2024-06-27 23:15:57,499 INFO L125 PetriNetUnfolderBase]: For 31701/31701 co-relation queries the response was YES. [2024-06-27 23:15:57,501 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. [2024-06-27 23:15:57,503 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 110 selfloop transitions, 39 changer transitions 0/151 dead transitions. [2024-06-27 23:15:57,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 151 transitions, 1826 flow [2024-06-27 23:15:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:15:57,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-27 23:15:57,505 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1397 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:15:57,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 151 transitions, 1826 flow [2024-06-27 23:15:57,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 151 transitions, 1735 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:57,546 INFO L231 Difference]: Finished difference. Result has 155 places, 138 transitions, 1410 flow [2024-06-27 23:15:57,546 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} [2024-06-27 23:15:57,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-27 23:15:57,546 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 1410 flow [2024-06-27 23:15:57,547 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) [2024-06-27 23:15:57,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:57,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:15:57,547 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)] === [2024-06-27 23:15:57,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1737013866, now seen corresponding path program 2 times [2024-06-27 23:15:57,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:57,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52384138] [2024-06-27 23:15:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52384138] [2024-06-27 23:15:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52384138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:59,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898962360] [2024-06-27 23:15:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:59,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:59,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:59,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:15:59,100 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) [2024-06-27 23:15:59,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:59,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:15:59,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:59,412 INFO L124 PetriNetUnfolderBase]: 369/662 cut-off events. [2024-06-27 23:15:59,413 INFO L125 PetriNetUnfolderBase]: For 32594/32595 co-relation queries the response was YES. [2024-06-27 23:15:59,415 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. [2024-06-27 23:15:59,417 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 32 changer transitions 0/157 dead transitions. [2024-06-27 23:15:59,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 157 transitions, 1740 flow [2024-06-27 23:15:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:15:59,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:15:59,418 INFO L175 Difference]: Start difference. First operand has 155 places, 138 transitions, 1410 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:15:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 157 transitions, 1740 flow [2024-06-27 23:15:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 1684 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:59,472 INFO L231 Difference]: Finished difference. Result has 161 places, 144 transitions, 1503 flow [2024-06-27 23:15:59,473 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} [2024-06-27 23:15:59,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-27 23:15:59,473 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 144 transitions, 1503 flow [2024-06-27 23:15:59,473 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) [2024-06-27 23:15:59,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:59,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:59,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:15:59,474 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)] === [2024-06-27 23:15:59,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1755782475, now seen corresponding path program 9 times [2024-06-27 23:15:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102658606] [2024-06-27 23:15:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102658606] [2024-06-27 23:16:00,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102658606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:00,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:00,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:00,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024451210] [2024-06-27 23:16:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:00,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:00,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:00,964 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) [2024-06-27 23:16:00,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:00,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:00,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:01,305 INFO L124 PetriNetUnfolderBase]: 395/693 cut-off events. [2024-06-27 23:16:01,306 INFO L125 PetriNetUnfolderBase]: For 33396/33396 co-relation queries the response was YES. [2024-06-27 23:16:01,309 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. [2024-06-27 23:16:01,310 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 44 changer transitions 0/158 dead transitions. [2024-06-27 23:16:01,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 1941 flow [2024-06-27 23:16:01,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:16:01,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 23:16:01,312 INFO L175 Difference]: Start difference. First operand has 161 places, 144 transitions, 1503 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:16:01,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 1941 flow [2024-06-27 23:16:01,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 1888 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:01,373 INFO L231 Difference]: Finished difference. Result has 165 places, 146 transitions, 1559 flow [2024-06-27 23:16:01,373 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} [2024-06-27 23:16:01,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-27 23:16:01,374 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 146 transitions, 1559 flow [2024-06-27 23:16:01,374 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) [2024-06-27 23:16:01,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:01,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:01,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:16:01,374 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)] === [2024-06-27 23:16:01,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:01,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1755790132, now seen corresponding path program 10 times [2024-06-27 23:16:01,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:01,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014523173] [2024-06-27 23:16:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:01,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:02,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014523173] [2024-06-27 23:16:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014523173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:02,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40435704] [2024-06-27 23:16:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:03,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:03,031 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) [2024-06-27 23:16:03,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:03,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:03,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:03,456 INFO L124 PetriNetUnfolderBase]: 393/690 cut-off events. [2024-06-27 23:16:03,456 INFO L125 PetriNetUnfolderBase]: For 34316/34316 co-relation queries the response was YES. [2024-06-27 23:16:03,459 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. [2024-06-27 23:16:03,461 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 51 changer transitions 0/157 dead transitions. [2024-06-27 23:16:03,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 157 transitions, 1897 flow [2024-06-27 23:16:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:16:03,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-27 23:16:03,462 INFO L175 Difference]: Start difference. First operand has 165 places, 146 transitions, 1559 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:16:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 157 transitions, 1897 flow [2024-06-27 23:16:03,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 157 transitions, 1814 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:03,518 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1583 flow [2024-06-27 23:16:03,519 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} [2024-06-27 23:16:03,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-27 23:16:03,519 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1583 flow [2024-06-27 23:16:03,519 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) [2024-06-27 23:16:03,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:03,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:03,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:16:03,520 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)] === [2024-06-27 23:16:03,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1985064781, now seen corresponding path program 10 times [2024-06-27 23:16:03,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:03,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732863898] [2024-06-27 23:16:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:03,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:05,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:05,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732863898] [2024-06-27 23:16:05,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732863898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:05,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:05,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096015374] [2024-06-27 23:16:05,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:05,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:05,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:05,172 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) [2024-06-27 23:16:05,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:05,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:05,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:05,563 INFO L124 PetriNetUnfolderBase]: 391/687 cut-off events. [2024-06-27 23:16:05,563 INFO L125 PetriNetUnfolderBase]: For 35010/35010 co-relation queries the response was YES. [2024-06-27 23:16:05,567 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. [2024-06-27 23:16:05,569 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 42 changer transitions 0/157 dead transitions. [2024-06-27 23:16:05,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 157 transitions, 1921 flow [2024-06-27 23:16:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:16:05,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 23:16:05,570 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1583 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:16:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 157 transitions, 1921 flow [2024-06-27 23:16:05,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 157 transitions, 1817 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:05,626 INFO L231 Difference]: Finished difference. Result has 170 places, 146 transitions, 1568 flow [2024-06-27 23:16:05,626 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} [2024-06-27 23:16:05,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-27 23:16:05,627 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 1568 flow [2024-06-27 23:16:05,627 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) [2024-06-27 23:16:05,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:05,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:16:05,627 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)] === [2024-06-27 23:16:05,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash -619593740, now seen corresponding path program 1 times [2024-06-27 23:16:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422725831] [2024-06-27 23:16:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422725831] [2024-06-27 23:16:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422725831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681233827] [2024-06-27 23:16:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:07,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:07,853 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) [2024-06-27 23:16:07,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:07,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:07,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:08,293 INFO L124 PetriNetUnfolderBase]: 364/654 cut-off events. [2024-06-27 23:16:08,293 INFO L125 PetriNetUnfolderBase]: For 35776/35777 co-relation queries the response was YES. [2024-06-27 23:16:08,296 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. [2024-06-27 23:16:08,298 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 111 selfloop transitions, 14 changer transitions 0/154 dead transitions. [2024-06-27 23:16:08,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 154 transitions, 1836 flow [2024-06-27 23:16:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:16:08,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 23:16:08,299 INFO L175 Difference]: Start difference. First operand has 170 places, 146 transitions, 1568 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:16:08,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 154 transitions, 1836 flow [2024-06-27 23:16:08,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 154 transitions, 1733 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:08,351 INFO L231 Difference]: Finished difference. Result has 170 places, 146 transitions, 1497 flow [2024-06-27 23:16:08,352 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} [2024-06-27 23:16:08,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-27 23:16:08,352 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 1497 flow [2024-06-27 23:16:08,352 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) [2024-06-27 23:16:08,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:08,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:08,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:16:08,353 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)] === [2024-06-27 23:16:08,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash -327627124, now seen corresponding path program 1 times [2024-06-27 23:16:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:08,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542057051] [2024-06-27 23:16:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542057051] [2024-06-27 23:16:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542057051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:09,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:09,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505457168] [2024-06-27 23:16:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:09,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:09,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:09,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:09,791 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) [2024-06-27 23:16:09,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:09,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:09,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:10,048 INFO L124 PetriNetUnfolderBase]: 395/695 cut-off events. [2024-06-27 23:16:10,049 INFO L125 PetriNetUnfolderBase]: For 36151/36151 co-relation queries the response was YES. [2024-06-27 23:16:10,052 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. [2024-06-27 23:16:10,054 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2024-06-27 23:16:10,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1877 flow [2024-06-27 23:16:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:16:10,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:16:10,055 INFO L175 Difference]: Start difference. First operand has 170 places, 146 transitions, 1497 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:16:10,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1877 flow [2024-06-27 23:16:10,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 1845 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:10,113 INFO L231 Difference]: Finished difference. Result has 173 places, 150 transitions, 1539 flow [2024-06-27 23:16:10,113 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} [2024-06-27 23:16:10,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-27 23:16:10,114 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 150 transitions, 1539 flow [2024-06-27 23:16:10,114 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) [2024-06-27 23:16:10,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:10,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:10,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:16:10,114 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)] === [2024-06-27 23:16:10,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash -327507154, now seen corresponding path program 2 times [2024-06-27 23:16:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:10,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51178794] [2024-06-27 23:16:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51178794] [2024-06-27 23:16:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51178794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592253016] [2024-06-27 23:16:11,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:11,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:11,527 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) [2024-06-27 23:16:11,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:11,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:11,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:11,710 INFO L124 PetriNetUnfolderBase]: 403/708 cut-off events. [2024-06-27 23:16:11,710 INFO L125 PetriNetUnfolderBase]: For 38701/38701 co-relation queries the response was YES. [2024-06-27 23:16:11,714 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. [2024-06-27 23:16:11,716 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 33 changer transitions 0/166 dead transitions. [2024-06-27 23:16:11,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 166 transitions, 2029 flow [2024-06-27 23:16:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:16:11,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:16:11,717 INFO L175 Difference]: Start difference. First operand has 173 places, 150 transitions, 1539 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:16:11,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 166 transitions, 2029 flow [2024-06-27 23:16:11,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 166 transitions, 1943 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:11,780 INFO L231 Difference]: Finished difference. Result has 173 places, 154 transitions, 1568 flow [2024-06-27 23:16:11,781 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} [2024-06-27 23:16:11,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-27 23:16:11,781 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 154 transitions, 1568 flow [2024-06-27 23:16:11,781 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) [2024-06-27 23:16:11,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:11,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:11,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:16:11,782 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)] === [2024-06-27 23:16:11,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash -177197308, now seen corresponding path program 1 times [2024-06-27 23:16:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:11,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245850748] [2024-06-27 23:16:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:13,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245850748] [2024-06-27 23:16:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245850748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:13,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082139774] [2024-06-27 23:16:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:13,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:13,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:13,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:13,123 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) [2024-06-27 23:16:13,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:13,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:13,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:13,438 INFO L124 PetriNetUnfolderBase]: 411/721 cut-off events. [2024-06-27 23:16:13,439 INFO L125 PetriNetUnfolderBase]: For 41556/41556 co-relation queries the response was YES. [2024-06-27 23:16:13,442 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. [2024-06-27 23:16:13,444 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 37 changer transitions 0/170 dead transitions. [2024-06-27 23:16:13,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 170 transitions, 2044 flow [2024-06-27 23:16:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:16:13,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 23:16:13,445 INFO L175 Difference]: Start difference. First operand has 173 places, 154 transitions, 1568 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:16:13,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 170 transitions, 2044 flow [2024-06-27 23:16:13,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1992 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:13,520 INFO L231 Difference]: Finished difference. Result has 177 places, 158 transitions, 1615 flow [2024-06-27 23:16:13,520 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} [2024-06-27 23:16:13,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-27 23:16:13,521 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 158 transitions, 1615 flow [2024-06-27 23:16:13,522 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) [2024-06-27 23:16:13,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:13,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:13,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:16:13,525 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)] === [2024-06-27 23:16:13,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash -172549168, now seen corresponding path program 2 times [2024-06-27 23:16:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137440253] [2024-06-27 23:16:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137440253] [2024-06-27 23:16:14,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137440253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:14,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:14,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739845569] [2024-06-27 23:16:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:14,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:14,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:14,881 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) [2024-06-27 23:16:14,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:14,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:14,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:15,201 INFO L124 PetriNetUnfolderBase]: 419/734 cut-off events. [2024-06-27 23:16:15,201 INFO L125 PetriNetUnfolderBase]: For 44388/44388 co-relation queries the response was YES. [2024-06-27 23:16:15,204 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. [2024-06-27 23:16:15,206 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-27 23:16:15,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 175 transitions, 2211 flow [2024-06-27 23:16:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:16:15,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:16:15,209 INFO L175 Difference]: Start difference. First operand has 177 places, 158 transitions, 1615 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:16:15,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 175 transitions, 2211 flow [2024-06-27 23:16:15,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 175 transitions, 2122 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:15,294 INFO L231 Difference]: Finished difference. Result has 180 places, 163 transitions, 1635 flow [2024-06-27 23:16:15,295 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} [2024-06-27 23:16:15,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-27 23:16:15,295 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 163 transitions, 1635 flow [2024-06-27 23:16:15,295 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) [2024-06-27 23:16:15,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:15,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:15,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:16:15,296 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)] === [2024-06-27 23:16:15,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -172555864, now seen corresponding path program 3 times [2024-06-27 23:16:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:15,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829320409] [2024-06-27 23:16:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:15,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:16,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829320409] [2024-06-27 23:16:16,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829320409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:16,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:16,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:16,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280322838] [2024-06-27 23:16:16,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:16,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:16,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:16,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:16,670 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) [2024-06-27 23:16:16,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:16,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:16,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:16,862 INFO L124 PetriNetUnfolderBase]: 422/739 cut-off events. [2024-06-27 23:16:16,862 INFO L125 PetriNetUnfolderBase]: For 46144/46144 co-relation queries the response was YES. [2024-06-27 23:16:16,866 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. [2024-06-27 23:16:16,868 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-27 23:16:16,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 176 transitions, 2127 flow [2024-06-27 23:16:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:16:16,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:16:16,871 INFO L175 Difference]: Start difference. First operand has 180 places, 163 transitions, 1635 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:16:16,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 176 transitions, 2127 flow [2024-06-27 23:16:16,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2077 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:16,952 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 1676 flow [2024-06-27 23:16:16,952 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} [2024-06-27 23:16:16,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-27 23:16:16,953 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 1676 flow [2024-06-27 23:16:16,953 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) [2024-06-27 23:16:16,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:16,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:16:16,953 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)] === [2024-06-27 23:16:16,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -172555678, now seen corresponding path program 3 times [2024-06-27 23:16:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976928294] [2024-06-27 23:16:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976928294] [2024-06-27 23:16:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976928294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272670641] [2024-06-27 23:16:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:18,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:18,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:18,175 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) [2024-06-27 23:16:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:18,411 INFO L124 PetriNetUnfolderBase]: 420/736 cut-off events. [2024-06-27 23:16:18,411 INFO L125 PetriNetUnfolderBase]: For 46850/46850 co-relation queries the response was YES. [2024-06-27 23:16:18,415 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. [2024-06-27 23:16:18,417 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 139 selfloop transitions, 35 changer transitions 0/176 dead transitions. [2024-06-27 23:16:18,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 176 transitions, 2150 flow [2024-06-27 23:16:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:16:18,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:16:18,419 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 1676 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:16:18,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 176 transitions, 2150 flow [2024-06-27 23:16:18,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 176 transitions, 2088 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:18,501 INFO L231 Difference]: Finished difference. Result has 187 places, 165 transitions, 1689 flow [2024-06-27 23:16:18,502 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} [2024-06-27 23:16:18,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-27 23:16:18,502 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 165 transitions, 1689 flow [2024-06-27 23:16:18,502 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) [2024-06-27 23:16:18,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:18,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:16:18,503 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)] === [2024-06-27 23:16:18,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash -59278, now seen corresponding path program 4 times [2024-06-27 23:16:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:18,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968461886] [2024-06-27 23:16:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:19,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968461886] [2024-06-27 23:16:19,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968461886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:19,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:19,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:19,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216853263] [2024-06-27 23:16:19,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:19,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:19,715 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) [2024-06-27 23:16:19,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:19,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:19,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:20,039 INFO L124 PetriNetUnfolderBase]: 433/757 cut-off events. [2024-06-27 23:16:20,039 INFO L125 PetriNetUnfolderBase]: For 51303/51303 co-relation queries the response was YES. [2024-06-27 23:16:20,043 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. [2024-06-27 23:16:20,045 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-27 23:16:20,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 2459 flow [2024-06-27 23:16:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:16:20,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:16:20,046 INFO L175 Difference]: Start difference. First operand has 187 places, 165 transitions, 1689 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:16:20,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 2459 flow [2024-06-27 23:16:20,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 186 transitions, 2382 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:20,131 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1773 flow [2024-06-27 23:16:20,131 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} [2024-06-27 23:16:20,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-27 23:16:20,131 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1773 flow [2024-06-27 23:16:20,132 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) [2024-06-27 23:16:20,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:20,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:20,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:16:20,132 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)] === [2024-06-27 23:16:20,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash -65788, now seen corresponding path program 5 times [2024-06-27 23:16:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845719042] [2024-06-27 23:16:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845719042] [2024-06-27 23:16:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845719042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:21,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:21,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932438178] [2024-06-27 23:16:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:21,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:21,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:21,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:21,422 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) [2024-06-27 23:16:21,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:21,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:21,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:21,733 INFO L124 PetriNetUnfolderBase]: 431/754 cut-off events. [2024-06-27 23:16:21,733 INFO L125 PetriNetUnfolderBase]: For 52008/52008 co-relation queries the response was YES. [2024-06-27 23:16:21,737 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. [2024-06-27 23:16:21,739 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 42 changer transitions 0/185 dead transitions. [2024-06-27 23:16:21,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 185 transitions, 2369 flow [2024-06-27 23:16:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:16:21,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:16:21,741 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1773 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:16:21,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 185 transitions, 2369 flow [2024-06-27 23:16:21,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 185 transitions, 2327 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:21,836 INFO L231 Difference]: Finished difference. Result has 196 places, 174 transitions, 1820 flow [2024-06-27 23:16:21,837 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} [2024-06-27 23:16:21,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 23:16:21,837 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 174 transitions, 1820 flow [2024-06-27 23:16:21,837 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) [2024-06-27 23:16:21,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:21,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:21,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:16:21,838 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)] === [2024-06-27 23:16:21,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:21,838 INFO L85 PathProgramCache]: Analyzing trace with hash 171362, now seen corresponding path program 6 times [2024-06-27 23:16:21,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:21,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394620191] [2024-06-27 23:16:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:23,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:23,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394620191] [2024-06-27 23:16:23,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394620191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:23,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:23,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776044966] [2024-06-27 23:16:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:23,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:23,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:23,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:23,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:23,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:23,212 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) [2024-06-27 23:16:23,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:23,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:23,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:23,644 INFO L124 PetriNetUnfolderBase]: 429/751 cut-off events. [2024-06-27 23:16:23,644 INFO L125 PetriNetUnfolderBase]: For 52813/52813 co-relation queries the response was YES. [2024-06-27 23:16:23,648 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. [2024-06-27 23:16:23,650 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-27 23:16:23,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 2312 flow [2024-06-27 23:16:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:16:23,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 23:16:23,652 INFO L175 Difference]: Start difference. First operand has 196 places, 174 transitions, 1820 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:16:23,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 2312 flow [2024-06-27 23:16:23,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 2247 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:23,745 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1848 flow [2024-06-27 23:16:23,746 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} [2024-06-27 23:16:23,747 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-27 23:16:23,747 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1848 flow [2024-06-27 23:16:23,752 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) [2024-06-27 23:16:23,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:23,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:23,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:16:23,752 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)] === [2024-06-27 23:16:23,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash -150375634, now seen corresponding path program 4 times [2024-06-27 23:16:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342867478] [2024-06-27 23:16:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:23,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342867478] [2024-06-27 23:16:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342867478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:25,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:25,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:25,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370562076] [2024-06-27 23:16:25,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:25,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:25,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:25,112 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) [2024-06-27 23:16:25,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:25,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:25,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:25,318 INFO L124 PetriNetUnfolderBase]: 432/756 cut-off events. [2024-06-27 23:16:25,318 INFO L125 PetriNetUnfolderBase]: For 54831/54831 co-relation queries the response was YES. [2024-06-27 23:16:25,322 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. [2024-06-27 23:16:25,325 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 34 changer transitions 0/186 dead transitions. [2024-06-27 23:16:25,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 186 transitions, 2368 flow [2024-06-27 23:16:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:16:25,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:16:25,326 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1848 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:16:25,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 186 transitions, 2368 flow [2024-06-27 23:16:25,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 186 transitions, 2287 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:25,432 INFO L231 Difference]: Finished difference. Result has 202 places, 176 transitions, 1862 flow [2024-06-27 23:16:25,433 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} [2024-06-27 23:16:25,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 23:16:25,433 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 176 transitions, 1862 flow [2024-06-27 23:16:25,433 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) [2024-06-27 23:16:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:25,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:25,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:16:25,434 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)] === [2024-06-27 23:16:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1971834596, now seen corresponding path program 7 times [2024-06-27 23:16:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:25,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95876832] [2024-06-27 23:16:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95876832] [2024-06-27 23:16:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95876832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:26,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753126787] [2024-06-27 23:16:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:26,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:26,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:26,688 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) [2024-06-27 23:16:26,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:26,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:26,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:27,174 INFO L124 PetriNetUnfolderBase]: 440/769 cut-off events. [2024-06-27 23:16:27,174 INFO L125 PetriNetUnfolderBase]: For 58230/58230 co-relation queries the response was YES. [2024-06-27 23:16:27,178 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. [2024-06-27 23:16:27,181 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 165 selfloop transitions, 26 changer transitions 0/193 dead transitions. [2024-06-27 23:16:27,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 193 transitions, 2533 flow [2024-06-27 23:16:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:16:27,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-27 23:16:27,182 INFO L175 Difference]: Start difference. First operand has 202 places, 176 transitions, 1862 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:16:27,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 193 transitions, 2533 flow [2024-06-27 23:16:27,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 193 transitions, 2468 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:27,279 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1905 flow [2024-06-27 23:16:27,279 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} [2024-06-27 23:16:27,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-27 23:16:27,279 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1905 flow [2024-06-27 23:16:27,280 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) [2024-06-27 23:16:27,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:27,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:27,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:16:27,280 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)] === [2024-06-27 23:16:27,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1485491864, now seen corresponding path program 1 times [2024-06-27 23:16:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338100415] [2024-06-27 23:16:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:28,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338100415] [2024-06-27 23:16:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338100415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:28,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:28,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160650538] [2024-06-27 23:16:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:28,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:28,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:28,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:28,741 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) [2024-06-27 23:16:28,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:28,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:28,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:29,135 INFO L124 PetriNetUnfolderBase]: 446/779 cut-off events. [2024-06-27 23:16:29,135 INFO L125 PetriNetUnfolderBase]: For 61946/61946 co-relation queries the response was YES. [2024-06-27 23:16:29,139 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. [2024-06-27 23:16:29,142 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 19 changer transitions 0/195 dead transitions. [2024-06-27 23:16:29,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 195 transitions, 2339 flow [2024-06-27 23:16:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:16:29,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 23:16:29,143 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1905 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:16:29,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 195 transitions, 2339 flow [2024-06-27 23:16:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 195 transitions, 2288 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:29,252 INFO L231 Difference]: Finished difference. Result has 210 places, 185 transitions, 1924 flow [2024-06-27 23:16:29,252 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} [2024-06-27 23:16:29,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-27 23:16:29,252 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 185 transitions, 1924 flow [2024-06-27 23:16:29,253 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) [2024-06-27 23:16:29,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:29,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:29,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:16:29,253 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)] === [2024-06-27 23:16:29,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1190033406, now seen corresponding path program 8 times [2024-06-27 23:16:29,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:29,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703264761] [2024-06-27 23:16:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703264761] [2024-06-27 23:16:30,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703264761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:30,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:30,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036204168] [2024-06-27 23:16:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:30,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:30,572 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) [2024-06-27 23:16:30,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:30,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:30,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:30,970 INFO L124 PetriNetUnfolderBase]: 449/784 cut-off events. [2024-06-27 23:16:30,970 INFO L125 PetriNetUnfolderBase]: For 62358/62358 co-relation queries the response was YES. [2024-06-27 23:16:30,975 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. [2024-06-27 23:16:30,977 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2024-06-27 23:16:30,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 197 transitions, 2572 flow [2024-06-27 23:16:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:16:30,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 23:16:30,979 INFO L175 Difference]: Start difference. First operand has 210 places, 185 transitions, 1924 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:16:30,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 197 transitions, 2572 flow [2024-06-27 23:16:31,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 197 transitions, 2520 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:16:31,088 INFO L231 Difference]: Finished difference. Result has 211 places, 187 transitions, 1947 flow [2024-06-27 23:16:31,089 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} [2024-06-27 23:16:31,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-27 23:16:31,089 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 187 transitions, 1947 flow [2024-06-27 23:16:31,089 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) [2024-06-27 23:16:31,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:31,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:31,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:16:31,090 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)] === [2024-06-27 23:16:31,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -533784156, now seen corresponding path program 9 times [2024-06-27 23:16:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277890749] [2024-06-27 23:16:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277890749] [2024-06-27 23:16:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277890749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:32,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:32,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:32,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188969083] [2024-06-27 23:16:32,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:32,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:32,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:32,375 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) [2024-06-27 23:16:32,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:32,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:32,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:32,654 INFO L124 PetriNetUnfolderBase]: 447/781 cut-off events. [2024-06-27 23:16:32,654 INFO L125 PetriNetUnfolderBase]: For 62944/62944 co-relation queries the response was YES. [2024-06-27 23:16:32,658 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. [2024-06-27 23:16:32,661 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 16 changer transitions 0/195 dead transitions. [2024-06-27 23:16:32,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 195 transitions, 2351 flow [2024-06-27 23:16:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:16:32,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 23:16:32,662 INFO L175 Difference]: Start difference. First operand has 211 places, 187 transitions, 1947 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:16:32,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 195 transitions, 2351 flow [2024-06-27 23:16:32,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 195 transitions, 2291 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:32,784 INFO L231 Difference]: Finished difference. Result has 215 places, 187 transitions, 1924 flow [2024-06-27 23:16:32,784 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} [2024-06-27 23:16:32,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 23:16:32,785 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 187 transitions, 1924 flow [2024-06-27 23:16:32,785 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) [2024-06-27 23:16:32,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:32,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:32,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:16:32,786 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)] === [2024-06-27 23:16:32,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026710, now seen corresponding path program 5 times [2024-06-27 23:16:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145011269] [2024-06-27 23:16:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:33,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145011269] [2024-06-27 23:16:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145011269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:33,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824347250] [2024-06-27 23:16:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:34,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:34,062 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) [2024-06-27 23:16:34,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:34,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:34,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:34,312 INFO L124 PetriNetUnfolderBase]: 445/778 cut-off events. [2024-06-27 23:16:34,312 INFO L125 PetriNetUnfolderBase]: For 63332/63332 co-relation queries the response was YES. [2024-06-27 23:16:34,316 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. [2024-06-27 23:16:34,318 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 16 changer transitions 0/195 dead transitions. [2024-06-27 23:16:34,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 195 transitions, 2328 flow [2024-06-27 23:16:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:16:34,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 23:16:34,319 INFO L175 Difference]: Start difference. First operand has 215 places, 187 transitions, 1924 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:16:34,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 195 transitions, 2328 flow [2024-06-27 23:16:34,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 195 transitions, 2273 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:34,435 INFO L231 Difference]: Finished difference. Result has 217 places, 187 transitions, 1906 flow [2024-06-27 23:16:34,436 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} [2024-06-27 23:16:34,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-27 23:16:34,436 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 187 transitions, 1906 flow [2024-06-27 23:16:34,436 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) [2024-06-27 23:16:34,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:34,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:16:34,437 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)] === [2024-06-27 23:16:34,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026896, now seen corresponding path program 10 times [2024-06-27 23:16:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:34,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082231488] [2024-06-27 23:16:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:34,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:35,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:35,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082231488] [2024-06-27 23:16:35,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082231488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773745823] [2024-06-27 23:16:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:35,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:35,735 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) [2024-06-27 23:16:35,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:35,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:35,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:36,027 INFO L124 PetriNetUnfolderBase]: 443/775 cut-off events. [2024-06-27 23:16:36,027 INFO L125 PetriNetUnfolderBase]: For 63665/63665 co-relation queries the response was YES. [2024-06-27 23:16:36,031 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. [2024-06-27 23:16:36,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-27 23:16:36,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2310 flow [2024-06-27 23:16:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:16:36,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:16:36,035 INFO L175 Difference]: Start difference. First operand has 217 places, 187 transitions, 1906 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:16:36,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2310 flow [2024-06-27 23:16:36,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 195 transitions, 2234 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:16:36,162 INFO L231 Difference]: Finished difference. Result has 216 places, 187 transitions, 1897 flow [2024-06-27 23:16:36,162 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} [2024-06-27 23:16:36,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-27 23:16:36,162 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 187 transitions, 1897 flow [2024-06-27 23:16:36,163 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) [2024-06-27 23:16:36,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:36,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:16:36,163 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)] === [2024-06-27 23:16:36,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:36,163 INFO L85 PathProgramCache]: Analyzing trace with hash -103752946, now seen corresponding path program 6 times [2024-06-27 23:16:36,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395495123] [2024-06-27 23:16:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395495123] [2024-06-27 23:16:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395495123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:37,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:37,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471284289] [2024-06-27 23:16:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:37,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:37,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:37,433 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) [2024-06-27 23:16:37,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:37,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:37,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:37,794 INFO L124 PetriNetUnfolderBase]: 455/795 cut-off events. [2024-06-27 23:16:37,794 INFO L125 PetriNetUnfolderBase]: For 67542/67542 co-relation queries the response was YES. [2024-06-27 23:16:37,801 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. [2024-06-27 23:16:37,803 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 39 changer transitions 0/214 dead transitions. [2024-06-27 23:16:37,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 214 transitions, 2565 flow [2024-06-27 23:16:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:16:37,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 23:16:37,804 INFO L175 Difference]: Start difference. First operand has 216 places, 187 transitions, 1897 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:16:37,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 214 transitions, 2565 flow [2024-06-27 23:16:37,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 214 transitions, 2483 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:37,941 INFO L231 Difference]: Finished difference. Result has 221 places, 194 transitions, 1986 flow [2024-06-27 23:16:37,942 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} [2024-06-27 23:16:37,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-27 23:16:37,942 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 194 transitions, 1986 flow [2024-06-27 23:16:37,942 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) [2024-06-27 23:16:37,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:37,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:37,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:16:37,943 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)] === [2024-06-27 23:16:37,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:37,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1918966008, now seen corresponding path program 7 times [2024-06-27 23:16:37,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:37,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836914991] [2024-06-27 23:16:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836914991] [2024-06-27 23:16:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836914991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:39,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:39,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:39,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422802476] [2024-06-27 23:16:39,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:39,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:39,375 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) [2024-06-27 23:16:39,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:39,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:39,818 INFO L124 PetriNetUnfolderBase]: 467/815 cut-off events. [2024-06-27 23:16:39,819 INFO L125 PetriNetUnfolderBase]: For 72028/72028 co-relation queries the response was YES. [2024-06-27 23:16:39,823 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. [2024-06-27 23:16:39,825 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 71 changer transitions 0/220 dead transitions. [2024-06-27 23:16:39,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 2816 flow [2024-06-27 23:16:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:16:39,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:16:39,826 INFO L175 Difference]: Start difference. First operand has 221 places, 194 transitions, 1986 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:16:39,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 2816 flow [2024-06-27 23:16:39,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 220 transitions, 2723 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:39,972 INFO L231 Difference]: Finished difference. Result has 226 places, 202 transitions, 2157 flow [2024-06-27 23:16:39,972 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} [2024-06-27 23:16:39,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-27 23:16:39,972 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 202 transitions, 2157 flow [2024-06-27 23:16:39,973 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) [2024-06-27 23:16:39,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:39,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:16:39,973 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)] === [2024-06-27 23:16:39,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1922689728, now seen corresponding path program 8 times [2024-06-27 23:16:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251458695] [2024-06-27 23:16:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251458695] [2024-06-27 23:16:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251458695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:41,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:41,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:41,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102111712] [2024-06-27 23:16:41,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:41,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:41,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:41,570 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) [2024-06-27 23:16:41,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:41,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:41,984 INFO L124 PetriNetUnfolderBase]: 465/812 cut-off events. [2024-06-27 23:16:41,984 INFO L125 PetriNetUnfolderBase]: For 72581/72581 co-relation queries the response was YES. [2024-06-27 23:16:41,988 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. [2024-06-27 23:16:41,991 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-27 23:16:41,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 219 transitions, 2637 flow [2024-06-27 23:16:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:16:41,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 23:16:41,999 INFO L175 Difference]: Start difference. First operand has 226 places, 202 transitions, 2157 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:16:42,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 219 transitions, 2637 flow [2024-06-27 23:16:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 219 transitions, 2542 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:42,115 INFO L231 Difference]: Finished difference. Result has 232 places, 202 transitions, 2135 flow [2024-06-27 23:16:42,115 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} [2024-06-27 23:16:42,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-27 23:16:42,115 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 202 transitions, 2135 flow [2024-06-27 23:16:42,116 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) [2024-06-27 23:16:42,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:42,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:42,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:16:42,116 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)] === [2024-06-27 23:16:42,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1918965822, now seen corresponding path program 11 times [2024-06-27 23:16:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:42,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836706678] [2024-06-27 23:16:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:43,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:43,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836706678] [2024-06-27 23:16:43,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836706678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:43,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:43,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825460558] [2024-06-27 23:16:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:43,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:43,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:43,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:43,527 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) [2024-06-27 23:16:43,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:43,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:43,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:43,957 INFO L124 PetriNetUnfolderBase]: 468/817 cut-off events. [2024-06-27 23:16:43,957 INFO L125 PetriNetUnfolderBase]: For 74505/74505 co-relation queries the response was YES. [2024-06-27 23:16:43,961 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. [2024-06-27 23:16:43,963 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 93 changer transitions 0/223 dead transitions. [2024-06-27 23:16:43,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 223 transitions, 2771 flow [2024-06-27 23:16:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:16:43,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:16:43,967 INFO L175 Difference]: Start difference. First operand has 232 places, 202 transitions, 2135 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:16:43,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 223 transitions, 2771 flow [2024-06-27 23:16:44,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 223 transitions, 2697 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:44,118 INFO L231 Difference]: Finished difference. Result has 233 places, 206 transitions, 2280 flow [2024-06-27 23:16:44,118 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} [2024-06-27 23:16:44,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-27 23:16:44,119 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 206 transitions, 2280 flow [2024-06-27 23:16:44,119 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) [2024-06-27 23:16:44,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:44,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:44,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:16:44,119 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)] === [2024-06-27 23:16:44,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1976900952, now seen corresponding path program 9 times [2024-06-27 23:16:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:44,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523143043] [2024-06-27 23:16:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:44,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523143043] [2024-06-27 23:16:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523143043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:45,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:45,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:45,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862570500] [2024-06-27 23:16:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:45,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:45,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:45,778 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) [2024-06-27 23:16:45,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:45,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:45,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:46,281 INFO L124 PetriNetUnfolderBase]: 475/829 cut-off events. [2024-06-27 23:16:46,281 INFO L125 PetriNetUnfolderBase]: For 77065/77065 co-relation queries the response was YES. [2024-06-27 23:16:46,286 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. [2024-06-27 23:16:46,289 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-06-27 23:16:46,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 226 transitions, 2820 flow [2024-06-27 23:16:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:16:46,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 23:16:46,291 INFO L175 Difference]: Start difference. First operand has 233 places, 206 transitions, 2280 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:16:46,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 226 transitions, 2820 flow [2024-06-27 23:16:46,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 226 transitions, 2734 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:46,443 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2319 flow [2024-06-27 23:16:46,443 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} [2024-06-27 23:16:46,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-27 23:16:46,444 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2319 flow [2024-06-27 23:16:46,444 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) [2024-06-27 23:16:46,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:46,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:46,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:16:46,444 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)] === [2024-06-27 23:16:46,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1883881894, now seen corresponding path program 10 times [2024-06-27 23:16:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:46,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984993228] [2024-06-27 23:16:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:48,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984993228] [2024-06-27 23:16:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984993228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:48,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:48,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264662880] [2024-06-27 23:16:48,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:48,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:48,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:48,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:48,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:48,158 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) [2024-06-27 23:16:48,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:48,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:48,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:48,637 INFO L124 PetriNetUnfolderBase]: 483/842 cut-off events. [2024-06-27 23:16:48,637 INFO L125 PetriNetUnfolderBase]: For 81557/81557 co-relation queries the response was YES. [2024-06-27 23:16:48,642 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. [2024-06-27 23:16:48,645 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 70 changer transitions 0/231 dead transitions. [2024-06-27 23:16:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 231 transitions, 3137 flow [2024-06-27 23:16:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:16:48,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 23:16:48,647 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2319 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:16:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 231 transitions, 3137 flow [2024-06-27 23:16:48,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 231 transitions, 3061 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:48,805 INFO L231 Difference]: Finished difference. Result has 240 places, 214 transitions, 2444 flow [2024-06-27 23:16:48,805 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} [2024-06-27 23:16:48,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-27 23:16:48,805 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 214 transitions, 2444 flow [2024-06-27 23:16:48,805 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) [2024-06-27 23:16:48,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:48,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:48,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:16:48,806 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)] === [2024-06-27 23:16:48,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:48,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1759364938, now seen corresponding path program 12 times [2024-06-27 23:16:48,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:48,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439225555] [2024-06-27 23:16:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:48,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:50,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439225555] [2024-06-27 23:16:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439225555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87859716] [2024-06-27 23:16:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:50,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:50,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:50,353 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) [2024-06-27 23:16:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:50,819 INFO L124 PetriNetUnfolderBase]: 491/855 cut-off events. [2024-06-27 23:16:50,819 INFO L125 PetriNetUnfolderBase]: For 86368/86368 co-relation queries the response was YES. [2024-06-27 23:16:50,824 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. [2024-06-27 23:16:50,827 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 81 changer transitions 0/235 dead transitions. [2024-06-27 23:16:50,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 235 transitions, 3246 flow [2024-06-27 23:16:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:16:50,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:16:50,828 INFO L175 Difference]: Start difference. First operand has 240 places, 214 transitions, 2444 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:16:50,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 235 transitions, 3246 flow [2024-06-27 23:16:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 235 transitions, 3130 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:51,015 INFO L231 Difference]: Finished difference. Result has 244 places, 218 transitions, 2523 flow [2024-06-27 23:16:51,015 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} [2024-06-27 23:16:51,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-27 23:16:51,016 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 218 transitions, 2523 flow [2024-06-27 23:16:51,016 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) [2024-06-27 23:16:51,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:51,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:16:51,016 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)] === [2024-06-27 23:16:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1740417118, now seen corresponding path program 13 times [2024-06-27 23:16:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8446167] [2024-06-27 23:16:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8446167] [2024-06-27 23:16:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8446167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:52,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:52,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:52,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906780327] [2024-06-27 23:16:52,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:52,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:52,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:52,634 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) [2024-06-27 23:16:52,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:52,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:52,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:53,164 INFO L124 PetriNetUnfolderBase]: 494/860 cut-off events. [2024-06-27 23:16:53,165 INFO L125 PetriNetUnfolderBase]: For 89106/89106 co-relation queries the response was YES. [2024-06-27 23:16:53,169 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. [2024-06-27 23:16:53,172 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 86 changer transitions 0/236 dead transitions. [2024-06-27 23:16:53,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 236 transitions, 3317 flow [2024-06-27 23:16:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:16:53,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:16:53,173 INFO L175 Difference]: Start difference. First operand has 244 places, 218 transitions, 2523 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:16:53,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 236 transitions, 3317 flow [2024-06-27 23:16:53,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 236 transitions, 3203 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:53,370 INFO L231 Difference]: Finished difference. Result has 248 places, 220 transitions, 2604 flow [2024-06-27 23:16:53,370 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} [2024-06-27 23:16:53,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-27 23:16:53,371 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 220 transitions, 2604 flow [2024-06-27 23:16:53,374 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) [2024-06-27 23:16:53,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:53,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:53,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:16:53,375 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)] === [2024-06-27 23:16:53,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1981662738, now seen corresponding path program 14 times [2024-06-27 23:16:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911177050] [2024-06-27 23:16:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:54,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911177050] [2024-06-27 23:16:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911177050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:54,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076850501] [2024-06-27 23:16:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:54,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:54,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:55,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:55,047 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) [2024-06-27 23:16:55,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:55,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:55,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:55,498 INFO L124 PetriNetUnfolderBase]: 492/857 cut-off events. [2024-06-27 23:16:55,498 INFO L125 PetriNetUnfolderBase]: For 89675/89675 co-relation queries the response was YES. [2024-06-27 23:16:55,503 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. [2024-06-27 23:16:55,506 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 84 changer transitions 0/235 dead transitions. [2024-06-27 23:16:55,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 235 transitions, 3244 flow [2024-06-27 23:16:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:16:55,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:16:55,526 INFO L175 Difference]: Start difference. First operand has 248 places, 220 transitions, 2604 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:16:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 235 transitions, 3244 flow [2024-06-27 23:16:55,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 235 transitions, 3083 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:55,709 INFO L231 Difference]: Finished difference. Result has 251 places, 220 transitions, 2616 flow [2024-06-27 23:16:55,724 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} [2024-06-27 23:16:55,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 23:16:55,724 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 220 transitions, 2616 flow [2024-06-27 23:16:55,725 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) [2024-06-27 23:16:55,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:55,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:55,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:16:55,725 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)] === [2024-06-27 23:16:55,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1759192144, now seen corresponding path program 11 times [2024-06-27 23:16:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:55,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026254598] [2024-06-27 23:16:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026254598] [2024-06-27 23:16:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026254598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:57,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381353774] [2024-06-27 23:16:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:57,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:57,391 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) [2024-06-27 23:16:57,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:57,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:57,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:57,925 INFO L124 PetriNetUnfolderBase]: 490/854 cut-off events. [2024-06-27 23:16:57,926 INFO L125 PetriNetUnfolderBase]: For 89932/89932 co-relation queries the response was YES. [2024-06-27 23:16:57,930 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. [2024-06-27 23:16:57,933 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 73 changer transitions 0/235 dead transitions. [2024-06-27 23:16:57,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 235 transitions, 3258 flow [2024-06-27 23:16:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:16:57,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 23:16:57,948 INFO L175 Difference]: Start difference. First operand has 251 places, 220 transitions, 2616 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:16:57,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 235 transitions, 3258 flow [2024-06-27 23:16:58,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 235 transitions, 3063 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:16:58,127 INFO L231 Difference]: Finished difference. Result has 251 places, 220 transitions, 2572 flow [2024-06-27 23:16:58,127 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} [2024-06-27 23:16:58,128 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 23:16:58,128 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 220 transitions, 2572 flow [2024-06-27 23:16:58,128 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) [2024-06-27 23:16:58,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:58,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:58,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:16:58,129 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)] === [2024-06-27 23:16:58,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1759185200, now seen corresponding path program 2 times [2024-06-27 23:16:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885957664] [2024-06-27 23:16:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885957664] [2024-06-27 23:16:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885957664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818393691] [2024-06-27 23:16:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:59,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:16:59,716 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) [2024-06-27 23:16:59,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:59,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:16:59,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:00,148 INFO L124 PetriNetUnfolderBase]: 499/869 cut-off events. [2024-06-27 23:17:00,149 INFO L125 PetriNetUnfolderBase]: For 94951/94951 co-relation queries the response was YES. [2024-06-27 23:17:00,155 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. [2024-06-27 23:17:00,158 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 70 changer transitions 0/244 dead transitions. [2024-06-27 23:17:00,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 244 transitions, 3306 flow [2024-06-27 23:17:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:17:00,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 23:17:00,159 INFO L175 Difference]: Start difference. First operand has 251 places, 220 transitions, 2572 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:17:00,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 244 transitions, 3306 flow [2024-06-27 23:17:00,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 244 transitions, 3147 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:00,341 INFO L231 Difference]: Finished difference. Result has 253 places, 226 transitions, 2675 flow [2024-06-27 23:17:00,341 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} [2024-06-27 23:17:00,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-27 23:17:00,342 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 226 transitions, 2675 flow [2024-06-27 23:17:00,342 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) [2024-06-27 23:17:00,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:00,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:00,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:17:00,342 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)] === [2024-06-27 23:17:00,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1230208810, now seen corresponding path program 12 times [2024-06-27 23:17:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:00,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394056866] [2024-06-27 23:17:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:00,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:01,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394056866] [2024-06-27 23:17:01,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394056866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:01,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:01,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:01,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003783843] [2024-06-27 23:17:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:01,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:01,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:01,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:02,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:02,081 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) [2024-06-27 23:17:02,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:02,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:02,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:02,598 INFO L124 PetriNetUnfolderBase]: 497/866 cut-off events. [2024-06-27 23:17:02,598 INFO L125 PetriNetUnfolderBase]: For 92771/92771 co-relation queries the response was YES. [2024-06-27 23:17:02,603 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. [2024-06-27 23:17:02,606 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 34 changer transitions 0/242 dead transitions. [2024-06-27 23:17:02,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 242 transitions, 3212 flow [2024-06-27 23:17:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:17:02,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 23:17:02,607 INFO L175 Difference]: Start difference. First operand has 253 places, 226 transitions, 2675 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:17:02,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 242 transitions, 3212 flow [2024-06-27 23:17:02,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 242 transitions, 3135 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:02,784 INFO L231 Difference]: Finished difference. Result has 257 places, 227 transitions, 2686 flow [2024-06-27 23:17:02,784 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} [2024-06-27 23:17:02,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-27 23:17:02,785 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 227 transitions, 2686 flow [2024-06-27 23:17:02,785 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) [2024-06-27 23:17:02,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:02,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:02,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:17:02,785 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)] === [2024-06-27 23:17:02,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1230328780, now seen corresponding path program 13 times [2024-06-27 23:17:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:02,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092005128] [2024-06-27 23:17:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092005128] [2024-06-27 23:17:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092005128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:04,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402998355] [2024-06-27 23:17:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:04,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:04,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:04,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:04,771 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) [2024-06-27 23:17:04,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:04,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:04,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:05,324 INFO L124 PetriNetUnfolderBase]: 500/871 cut-off events. [2024-06-27 23:17:05,324 INFO L125 PetriNetUnfolderBase]: For 95124/95124 co-relation queries the response was YES. [2024-06-27 23:17:05,330 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. [2024-06-27 23:17:05,332 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 71 changer transitions 0/244 dead transitions. [2024-06-27 23:17:05,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 244 transitions, 3384 flow [2024-06-27 23:17:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:17:05,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 23:17:05,334 INFO L175 Difference]: Start difference. First operand has 257 places, 227 transitions, 2686 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:17:05,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 244 transitions, 3384 flow [2024-06-27 23:17:05,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 3270 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:17:05,534 INFO L231 Difference]: Finished difference. Result has 257 places, 229 transitions, 2749 flow [2024-06-27 23:17:05,534 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} [2024-06-27 23:17:05,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-27 23:17:05,534 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 229 transitions, 2749 flow [2024-06-27 23:17:05,534 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) [2024-06-27 23:17:05,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:05,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:05,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:17:05,535 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)] === [2024-06-27 23:17:05,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1230328966, now seen corresponding path program 15 times [2024-06-27 23:17:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451300093] [2024-06-27 23:17:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451300093] [2024-06-27 23:17:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451300093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:07,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767895916] [2024-06-27 23:17:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:07,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:07,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:07,465 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) [2024-06-27 23:17:07,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:07,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:07,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:08,043 INFO L124 PetriNetUnfolderBase]: 503/876 cut-off events. [2024-06-27 23:17:08,043 INFO L125 PetriNetUnfolderBase]: For 97802/97802 co-relation queries the response was YES. [2024-06-27 23:17:08,048 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. [2024-06-27 23:17:08,051 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 82 changer transitions 0/246 dead transitions. [2024-06-27 23:17:08,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 246 transitions, 3439 flow [2024-06-27 23:17:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:17:08,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 23:17:08,053 INFO L175 Difference]: Start difference. First operand has 257 places, 229 transitions, 2749 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:17:08,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 246 transitions, 3439 flow [2024-06-27 23:17:08,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 246 transitions, 3176 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:17:08,263 INFO L231 Difference]: Finished difference. Result has 257 places, 231 transitions, 2671 flow [2024-06-27 23:17:08,263 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} [2024-06-27 23:17:08,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-27 23:17:08,264 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 231 transitions, 2671 flow [2024-06-27 23:17:08,264 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) [2024-06-27 23:17:08,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:08,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:08,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:17:08,264 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)] === [2024-06-27 23:17:08,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1234977354, now seen corresponding path program 3 times [2024-06-27 23:17:08,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706102517] [2024-06-27 23:17:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:08,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:09,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706102517] [2024-06-27 23:17:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706102517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:09,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:09,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250761066] [2024-06-27 23:17:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:09,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:09,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:09,887 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) [2024-06-27 23:17:09,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:09,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:10,346 INFO L124 PetriNetUnfolderBase]: 509/886 cut-off events. [2024-06-27 23:17:10,346 INFO L125 PetriNetUnfolderBase]: For 102788/102788 co-relation queries the response was YES. [2024-06-27 23:17:10,352 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. [2024-06-27 23:17:10,354 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 62 changer transitions 0/251 dead transitions. [2024-06-27 23:17:10,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 251 transitions, 3399 flow [2024-06-27 23:17:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:10,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:17:10,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:17:10,356 INFO L175 Difference]: Start difference. First operand has 257 places, 231 transitions, 2671 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:17:10,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 251 transitions, 3399 flow [2024-06-27 23:17:10,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 251 transitions, 3084 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:17:10,583 INFO L231 Difference]: Finished difference. Result has 257 places, 233 transitions, 2515 flow [2024-06-27 23:17:10,584 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} [2024-06-27 23:17:10,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-27 23:17:10,584 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 233 transitions, 2515 flow [2024-06-27 23:17:10,584 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) [2024-06-27 23:17:10,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:10,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:10,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:17:10,585 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)] === [2024-06-27 23:17:10,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1234977106, now seen corresponding path program 16 times [2024-06-27 23:17:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848394757] [2024-06-27 23:17:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:12,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848394757] [2024-06-27 23:17:12,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848394757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:12,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:12,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114877257] [2024-06-27 23:17:12,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:12,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:12,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:12,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:12,515 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) [2024-06-27 23:17:12,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:12,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:12,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:13,058 INFO L124 PetriNetUnfolderBase]: 517/899 cut-off events. [2024-06-27 23:17:13,059 INFO L125 PetriNetUnfolderBase]: For 105244/105244 co-relation queries the response was YES. [2024-06-27 23:17:13,064 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. [2024-06-27 23:17:13,067 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 84 changer transitions 0/252 dead transitions. [2024-06-27 23:17:13,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 252 transitions, 3373 flow [2024-06-27 23:17:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:17:13,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:17:13,069 INFO L175 Difference]: Start difference. First operand has 257 places, 233 transitions, 2515 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:17:13,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 252 transitions, 3373 flow [2024-06-27 23:17:13,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 252 transitions, 3247 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:13,295 INFO L231 Difference]: Finished difference. Result has 260 places, 237 transitions, 2582 flow [2024-06-27 23:17:13,296 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} [2024-06-27 23:17:13,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-27 23:17:13,296 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 237 transitions, 2582 flow [2024-06-27 23:17:13,296 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) [2024-06-27 23:17:13,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:13,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:13,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:17:13,297 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)] === [2024-06-27 23:17:13,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:13,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1234970596, now seen corresponding path program 17 times [2024-06-27 23:17:13,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:13,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086907354] [2024-06-27 23:17:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:15,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086907354] [2024-06-27 23:17:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086907354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:15,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:15,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504010727] [2024-06-27 23:17:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:15,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:15,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:15,105 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) [2024-06-27 23:17:15,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:15,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:15,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:15,605 INFO L124 PetriNetUnfolderBase]: 515/896 cut-off events. [2024-06-27 23:17:15,605 INFO L125 PetriNetUnfolderBase]: For 105333/105333 co-relation queries the response was YES. [2024-06-27 23:17:15,612 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. [2024-06-27 23:17:15,615 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 83 changer transitions 0/251 dead transitions. [2024-06-27 23:17:15,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 251 transitions, 3268 flow [2024-06-27 23:17:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:17:15,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:17:15,616 INFO L175 Difference]: Start difference. First operand has 260 places, 237 transitions, 2582 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:17:15,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 251 transitions, 3268 flow [2024-06-27 23:17:15,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 251 transitions, 3119 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:15,852 INFO L231 Difference]: Finished difference. Result has 264 places, 237 transitions, 2604 flow [2024-06-27 23:17:15,852 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} [2024-06-27 23:17:15,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-27 23:17:15,853 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 237 transitions, 2604 flow [2024-06-27 23:17:15,853 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) [2024-06-27 23:17:15,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:15,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:15,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:17:15,853 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)] === [2024-06-27 23:17:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1234970410, now seen corresponding path program 14 times [2024-06-27 23:17:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:15,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129449140] [2024-06-27 23:17:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:15,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:17,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129449140] [2024-06-27 23:17:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129449140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:17,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151328248] [2024-06-27 23:17:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:17,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:17,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:17,902 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) [2024-06-27 23:17:17,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:17,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:17,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:18,442 INFO L124 PetriNetUnfolderBase]: 518/901 cut-off events. [2024-06-27 23:17:18,442 INFO L125 PetriNetUnfolderBase]: For 108093/108093 co-relation queries the response was YES. [2024-06-27 23:17:18,448 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. [2024-06-27 23:17:18,451 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 72 changer transitions 0/253 dead transitions. [2024-06-27 23:17:18,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 253 transitions, 3320 flow [2024-06-27 23:17:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:17:18,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 23:17:18,453 INFO L175 Difference]: Start difference. First operand has 264 places, 237 transitions, 2604 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:17:18,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 253 transitions, 3320 flow [2024-06-27 23:17:18,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 253 transitions, 3148 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:18,709 INFO L231 Difference]: Finished difference. Result has 265 places, 239 transitions, 2605 flow [2024-06-27 23:17:18,710 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} [2024-06-27 23:17:18,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 23:17:18,710 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 239 transitions, 2605 flow [2024-06-27 23:17:18,710 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) [2024-06-27 23:17:18,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:18,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:17:18,711 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)] === [2024-06-27 23:17:18,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1987137530, now seen corresponding path program 4 times [2024-06-27 23:17:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222777155] [2024-06-27 23:17:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222777155] [2024-06-27 23:17:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222777155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:20,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:20,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931551474] [2024-06-27 23:17:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:20,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:20,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:20,290 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) [2024-06-27 23:17:20,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:20,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:20,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:20,760 INFO L124 PetriNetUnfolderBase]: 534/927 cut-off events. [2024-06-27 23:17:20,760 INFO L125 PetriNetUnfolderBase]: For 120165/120165 co-relation queries the response was YES. [2024-06-27 23:17:20,767 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. [2024-06-27 23:17:20,770 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 69 changer transitions 0/261 dead transitions. [2024-06-27 23:17:20,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 261 transitions, 3541 flow [2024-06-27 23:17:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:17:20,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:17:20,771 INFO L175 Difference]: Start difference. First operand has 265 places, 239 transitions, 2605 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:17:20,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 261 transitions, 3541 flow [2024-06-27 23:17:21,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 3394 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:21,044 INFO L231 Difference]: Finished difference. Result has 268 places, 243 transitions, 2657 flow [2024-06-27 23:17:21,044 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} [2024-06-27 23:17:21,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-27 23:17:21,044 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 243 transitions, 2657 flow [2024-06-27 23:17:21,045 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) [2024-06-27 23:17:21,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:21,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:21,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:17:21,045 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)] === [2024-06-27 23:17:21,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1405081902, now seen corresponding path program 18 times [2024-06-27 23:17:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:21,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80897520] [2024-06-27 23:17:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:22,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:22,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80897520] [2024-06-27 23:17:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80897520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:22,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555911424] [2024-06-27 23:17:22,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:22,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:22,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:22,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:22,965 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) [2024-06-27 23:17:22,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:22,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:22,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:23,466 INFO L124 PetriNetUnfolderBase]: 537/932 cut-off events. [2024-06-27 23:17:23,466 INFO L125 PetriNetUnfolderBase]: For 120302/120302 co-relation queries the response was YES. [2024-06-27 23:17:23,472 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. [2024-06-27 23:17:23,474 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 89 changer transitions 0/258 dead transitions. [2024-06-27 23:17:23,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 258 transitions, 3371 flow [2024-06-27 23:17:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:17:23,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:17:23,476 INFO L175 Difference]: Start difference. First operand has 268 places, 243 transitions, 2657 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:17:23,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 258 transitions, 3371 flow [2024-06-27 23:17:23,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 258 transitions, 3238 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:23,751 INFO L231 Difference]: Finished difference. Result has 272 places, 245 transitions, 2719 flow [2024-06-27 23:17:23,751 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} [2024-06-27 23:17:23,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-27 23:17:23,751 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 245 transitions, 2719 flow [2024-06-27 23:17:23,751 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) [2024-06-27 23:17:23,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:23,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:23,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:17:23,752 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)] === [2024-06-27 23:17:23,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1407697636, now seen corresponding path program 19 times [2024-06-27 23:17:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814570661] [2024-06-27 23:17:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:23,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:25,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814570661] [2024-06-27 23:17:25,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814570661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:25,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:25,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:25,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784569552] [2024-06-27 23:17:25,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:25,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:25,701 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) [2024-06-27 23:17:25,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:25,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:25,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:26,280 INFO L124 PetriNetUnfolderBase]: 540/937 cut-off events. [2024-06-27 23:17:26,280 INFO L125 PetriNetUnfolderBase]: For 123066/123066 co-relation queries the response was YES. [2024-06-27 23:17:26,286 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. [2024-06-27 23:17:26,289 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 97 changer transitions 0/260 dead transitions. [2024-06-27 23:17:26,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 260 transitions, 3443 flow [2024-06-27 23:17:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:17:26,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 23:17:26,291 INFO L175 Difference]: Start difference. First operand has 272 places, 245 transitions, 2719 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:17:26,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 260 transitions, 3443 flow [2024-06-27 23:17:26,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 260 transitions, 3236 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:26,606 INFO L231 Difference]: Finished difference. Result has 273 places, 247 transitions, 2727 flow [2024-06-27 23:17:26,607 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} [2024-06-27 23:17:26,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-27 23:17:26,607 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 247 transitions, 2727 flow [2024-06-27 23:17:26,607 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) [2024-06-27 23:17:26,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:26,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:26,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:17:26,608 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)] === [2024-06-27 23:17:26,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1407460300, now seen corresponding path program 15 times [2024-06-27 23:17:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145224334] [2024-06-27 23:17:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:28,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145224334] [2024-06-27 23:17:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145224334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:28,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:28,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:28,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093723520] [2024-06-27 23:17:28,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:28,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:28,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:28,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:28,498 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) [2024-06-27 23:17:28,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:28,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:28,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:28,971 INFO L124 PetriNetUnfolderBase]: 538/934 cut-off events. [2024-06-27 23:17:28,972 INFO L125 PetriNetUnfolderBase]: For 122782/122782 co-relation queries the response was YES. [2024-06-27 23:17:28,978 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. [2024-06-27 23:17:28,981 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 78 changer transitions 0/259 dead transitions. [2024-06-27 23:17:28,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 259 transitions, 3271 flow [2024-06-27 23:17:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:17:28,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-27 23:17:28,982 INFO L175 Difference]: Start difference. First operand has 273 places, 247 transitions, 2727 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:17:28,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 259 transitions, 3271 flow [2024-06-27 23:17:29,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 259 transitions, 3101 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:29,261 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2718 flow [2024-06-27 23:17:29,261 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} [2024-06-27 23:17:29,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-27 23:17:29,262 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2718 flow [2024-06-27 23:17:29,262 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) [2024-06-27 23:17:29,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:29,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:17:29,262 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)] === [2024-06-27 23:17:29,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1407706254, now seen corresponding path program 5 times [2024-06-27 23:17:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:29,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656104462] [2024-06-27 23:17:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:31,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656104462] [2024-06-27 23:17:31,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656104462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:31,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:31,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248527230] [2024-06-27 23:17:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:31,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:31,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:31,104 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) [2024-06-27 23:17:31,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:31,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:31,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:31,609 INFO L124 PetriNetUnfolderBase]: 534/928 cut-off events. [2024-06-27 23:17:31,610 INFO L125 PetriNetUnfolderBase]: For 122395/122395 co-relation queries the response was YES. [2024-06-27 23:17:31,615 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. [2024-06-27 23:17:31,617 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 71 changer transitions 0/263 dead transitions. [2024-06-27 23:17:31,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3448 flow [2024-06-27 23:17:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:17:31,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 23:17:31,619 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2718 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:17:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3448 flow [2024-06-27 23:17:31,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 3226 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:17:31,905 INFO L231 Difference]: Finished difference. Result has 274 places, 247 transitions, 2643 flow [2024-06-27 23:17:31,906 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} [2024-06-27 23:17:31,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-27 23:17:31,906 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 247 transitions, 2643 flow [2024-06-27 23:17:31,906 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) [2024-06-27 23:17:31,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:31,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:31,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:17:31,907 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)] === [2024-06-27 23:17:31,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1405088660, now seen corresponding path program 6 times [2024-06-27 23:17:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116925003] [2024-06-27 23:17:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:33,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116925003] [2024-06-27 23:17:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116925003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:33,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:33,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39642434] [2024-06-27 23:17:33,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:33,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:33,609 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) [2024-06-27 23:17:33,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:33,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:33,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:34,097 INFO L124 PetriNetUnfolderBase]: 530/922 cut-off events. [2024-06-27 23:17:34,097 INFO L125 PetriNetUnfolderBase]: For 118602/118602 co-relation queries the response was YES. [2024-06-27 23:17:34,103 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. [2024-06-27 23:17:34,106 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 67 changer transitions 0/263 dead transitions. [2024-06-27 23:17:34,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 263 transitions, 3211 flow [2024-06-27 23:17:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:17:34,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 23:17:34,107 INFO L175 Difference]: Start difference. First operand has 274 places, 247 transitions, 2643 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:17:34,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 263 transitions, 3211 flow [2024-06-27 23:17:34,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 263 transitions, 3065 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:34,399 INFO L231 Difference]: Finished difference. Result has 277 places, 247 transitions, 2636 flow [2024-06-27 23:17:34,399 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} [2024-06-27 23:17:34,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-27 23:17:34,400 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 247 transitions, 2636 flow [2024-06-27 23:17:34,400 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) [2024-06-27 23:17:34,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:34,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:34,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:17:34,400 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)] === [2024-06-27 23:17:34,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1407466996, now seen corresponding path program 20 times [2024-06-27 23:17:34,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:34,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915676873] [2024-06-27 23:17:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915676873] [2024-06-27 23:17:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915676873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:36,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:36,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:36,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566619669] [2024-06-27 23:17:36,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:36,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:36,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:36,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:36,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:36,194 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) [2024-06-27 23:17:36,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:36,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:36,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:36,737 INFO L124 PetriNetUnfolderBase]: 528/919 cut-off events. [2024-06-27 23:17:36,738 INFO L125 PetriNetUnfolderBase]: For 114377/114377 co-relation queries the response was YES. [2024-06-27 23:17:36,744 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. [2024-06-27 23:17:36,747 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 90 changer transitions 0/259 dead transitions. [2024-06-27 23:17:36,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 259 transitions, 3180 flow [2024-06-27 23:17:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:17:36,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:17:36,748 INFO L175 Difference]: Start difference. First operand has 277 places, 247 transitions, 2636 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:17:36,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 259 transitions, 3180 flow [2024-06-27 23:17:37,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 259 transitions, 3003 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:17:37,017 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2644 flow [2024-06-27 23:17:37,018 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} [2024-06-27 23:17:37,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-27 23:17:37,018 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2644 flow [2024-06-27 23:17:37,019 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) [2024-06-27 23:17:37,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:37,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:37,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:17:37,020 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)] === [2024-06-27 23:17:37,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1566595471, now seen corresponding path program 1 times [2024-06-27 23:17:37,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:37,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441138700] [2024-06-27 23:17:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:37,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441138700] [2024-06-27 23:17:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441138700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:38,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:17:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676912839] [2024-06-27 23:17:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:38,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:17:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:17:38,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:17:38,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:39,000 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) [2024-06-27 23:17:39,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:39,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:39,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:39,446 INFO L124 PetriNetUnfolderBase]: 540/940 cut-off events. [2024-06-27 23:17:39,447 INFO L125 PetriNetUnfolderBase]: For 120381/120381 co-relation queries the response was YES. [2024-06-27 23:17:39,453 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. [2024-06-27 23:17:39,455 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 22 changer transitions 0/269 dead transitions. [2024-06-27 23:17:39,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 269 transitions, 3442 flow [2024-06-27 23:17:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:17:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:17:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 23:17:39,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 23:17:39,457 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2644 flow. Second operand 12 states and 129 transitions. [2024-06-27 23:17:39,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 269 transitions, 3442 flow [2024-06-27 23:17:39,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 269 transitions, 3223 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:17:39,767 INFO L231 Difference]: Finished difference. Result has 279 places, 253 transitions, 2538 flow [2024-06-27 23:17:39,767 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} [2024-06-27 23:17:39,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-27 23:17:39,768 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 253 transitions, 2538 flow [2024-06-27 23:17:39,768 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) [2024-06-27 23:17:39,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:39,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:39,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:17:39,769 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)] === [2024-06-27 23:17:39,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1562930186, now seen corresponding path program 1 times [2024-06-27 23:17:39,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:39,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908408263] [2024-06-27 23:17:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:39,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908408263] [2024-06-27 23:17:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908408263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:41,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:41,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025302880] [2024-06-27 23:17:41,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:41,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:41,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:41,443 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) [2024-06-27 23:17:41,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:41,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:41,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:41,803 INFO L124 PetriNetUnfolderBase]: 543/945 cut-off events. [2024-06-27 23:17:41,803 INFO L125 PetriNetUnfolderBase]: For 122932/122932 co-relation queries the response was YES. [2024-06-27 23:17:41,809 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. [2024-06-27 23:17:41,812 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 18 changer transitions 0/268 dead transitions. [2024-06-27 23:17:41,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 268 transitions, 3120 flow [2024-06-27 23:17:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:17:41,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 23:17:41,813 INFO L175 Difference]: Start difference. First operand has 279 places, 253 transitions, 2538 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:17:41,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 268 transitions, 3120 flow [2024-06-27 23:17:42,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3073 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:42,062 INFO L231 Difference]: Finished difference. Result has 281 places, 255 transitions, 2550 flow [2024-06-27 23:17:42,062 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} [2024-06-27 23:17:42,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 23:17:42,063 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 255 transitions, 2550 flow [2024-06-27 23:17:42,063 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) [2024-06-27 23:17:42,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:42,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:42,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:17:42,063 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)] === [2024-06-27 23:17:42,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1566505261, now seen corresponding path program 2 times [2024-06-27 23:17:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:42,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18278505] [2024-06-27 23:17:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18278505] [2024-06-27 23:17:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18278505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:43,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:17:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596830554] [2024-06-27 23:17:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:43,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:17:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:17:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:17:43,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:43,803 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) [2024-06-27 23:17:43,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:43,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:43,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:44,255 INFO L124 PetriNetUnfolderBase]: 541/942 cut-off events. [2024-06-27 23:17:44,255 INFO L125 PetriNetUnfolderBase]: For 121902/121902 co-relation queries the response was YES. [2024-06-27 23:17:44,261 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. [2024-06-27 23:17:44,264 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 18 changer transitions 0/268 dead transitions. [2024-06-27 23:17:44,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 268 transitions, 3118 flow [2024-06-27 23:17:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:17:44,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 23:17:44,265 INFO L175 Difference]: Start difference. First operand has 281 places, 255 transitions, 2550 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:17:44,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 268 transitions, 3118 flow [2024-06-27 23:17:44,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 268 transitions, 3069 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:44,570 INFO L231 Difference]: Finished difference. Result has 284 places, 255 transitions, 2542 flow [2024-06-27 23:17:44,570 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} [2024-06-27 23:17:44,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-27 23:17:44,570 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2542 flow [2024-06-27 23:17:44,570 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) [2024-06-27 23:17:44,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:44,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:44,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:17:44,571 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)] === [2024-06-27 23:17:44,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1198148292, now seen corresponding path program 2 times [2024-06-27 23:17:44,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:44,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703107839] [2024-06-27 23:17:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:44,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:45,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:45,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703107839] [2024-06-27 23:17:45,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703107839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:45,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58875421] [2024-06-27 23:17:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:45,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:45,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:45,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:45,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:45,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:45,909 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) [2024-06-27 23:17:45,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:45,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:45,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:46,221 INFO L124 PetriNetUnfolderBase]: 554/963 cut-off events. [2024-06-27 23:17:46,221 INFO L125 PetriNetUnfolderBase]: For 132401/132401 co-relation queries the response was YES. [2024-06-27 23:17:46,228 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. [2024-06-27 23:17:46,231 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 63 changer transitions 0/275 dead transitions. [2024-06-27 23:17:46,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 275 transitions, 3530 flow [2024-06-27 23:17:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:17:46,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 23:17:46,233 INFO L175 Difference]: Start difference. First operand has 284 places, 255 transitions, 2542 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:17:46,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 275 transitions, 3530 flow [2024-06-27 23:17:46,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 275 transitions, 3495 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:46,561 INFO L231 Difference]: Finished difference. Result has 285 places, 261 transitions, 2696 flow [2024-06-27 23:17:46,561 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} [2024-06-27 23:17:46,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 23:17:46,561 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 261 transitions, 2696 flow [2024-06-27 23:17:46,561 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) [2024-06-27 23:17:46,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:46,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:46,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:17:46,562 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)] === [2024-06-27 23:17:46,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1198148075, now seen corresponding path program 1 times [2024-06-27 23:17:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:46,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808164483] [2024-06-27 23:17:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:46,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:48,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:48,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808164483] [2024-06-27 23:17:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808164483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:48,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:48,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506834060] [2024-06-27 23:17:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:48,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:48,152 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) [2024-06-27 23:17:48,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:48,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:48,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:48,592 INFO L124 PetriNetUnfolderBase]: 570/989 cut-off events. [2024-06-27 23:17:48,592 INFO L125 PetriNetUnfolderBase]: For 147595/147595 co-relation queries the response was YES. [2024-06-27 23:17:48,599 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. [2024-06-27 23:17:48,602 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 211 selfloop transitions, 69 changer transitions 0/282 dead transitions. [2024-06-27 23:17:48,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 282 transitions, 3524 flow [2024-06-27 23:17:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:17:48,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 23:17:48,603 INFO L175 Difference]: Start difference. First operand has 285 places, 261 transitions, 2696 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:17:48,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 282 transitions, 3524 flow [2024-06-27 23:17:48,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 282 transitions, 3453 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:48,995 INFO L231 Difference]: Finished difference. Result has 291 places, 265 transitions, 2812 flow [2024-06-27 23:17:48,995 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} [2024-06-27 23:17:48,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-27 23:17:48,995 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 265 transitions, 2812 flow [2024-06-27 23:17:48,996 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) [2024-06-27 23:17:48,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:48,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:17:48,996 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)] === [2024-06-27 23:17:48,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1198153872, now seen corresponding path program 3 times [2024-06-27 23:17:48,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963969738] [2024-06-27 23:17:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963969738] [2024-06-27 23:17:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963969738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:50,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:50,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:50,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393555321] [2024-06-27 23:17:50,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:50,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:50,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:50,430 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) [2024-06-27 23:17:50,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:50,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:50,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:50,844 INFO L124 PetriNetUnfolderBase]: 568/986 cut-off events. [2024-06-27 23:17:50,844 INFO L125 PetriNetUnfolderBase]: For 143078/143078 co-relation queries the response was YES. [2024-06-27 23:17:50,852 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. [2024-06-27 23:17:50,855 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 62 changer transitions 0/278 dead transitions. [2024-06-27 23:17:50,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 278 transitions, 3578 flow [2024-06-27 23:17:50,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:17:50,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 23:17:50,857 INFO L175 Difference]: Start difference. First operand has 291 places, 265 transitions, 2812 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:17:50,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 278 transitions, 3578 flow [2024-06-27 23:17:51,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 278 transitions, 3424 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:51,228 INFO L231 Difference]: Finished difference. Result has 293 places, 265 transitions, 2787 flow [2024-06-27 23:17:51,229 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} [2024-06-27 23:17:51,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-27 23:17:51,229 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 265 transitions, 2787 flow [2024-06-27 23:17:51,229 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) [2024-06-27 23:17:51,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:51,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:51,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:17:51,230 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)] === [2024-06-27 23:17:51,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1198154027, now seen corresponding path program 3 times [2024-06-27 23:17:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900318420] [2024-06-27 23:17:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:52,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:52,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900318420] [2024-06-27 23:17:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900318420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:52,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245652010] [2024-06-27 23:17:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:52,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:52,948 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) [2024-06-27 23:17:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:53,469 INFO L124 PetriNetUnfolderBase]: 571/991 cut-off events. [2024-06-27 23:17:53,469 INFO L125 PetriNetUnfolderBase]: For 146097/146097 co-relation queries the response was YES. [2024-06-27 23:17:53,476 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. [2024-06-27 23:17:53,479 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 39 changer transitions 0/279 dead transitions. [2024-06-27 23:17:53,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 279 transitions, 3397 flow [2024-06-27 23:17:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:17:53,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:17:53,480 INFO L175 Difference]: Start difference. First operand has 293 places, 265 transitions, 2787 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:17:53,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 279 transitions, 3397 flow [2024-06-27 23:17:53,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 279 transitions, 3261 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:53,880 INFO L231 Difference]: Finished difference. Result has 294 places, 267 transitions, 2762 flow [2024-06-27 23:17:53,881 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} [2024-06-27 23:17:53,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-27 23:17:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 267 transitions, 2762 flow [2024-06-27 23:17:53,881 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) [2024-06-27 23:17:53,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:53,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:53,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:17:53,881 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)] === [2024-06-27 23:17:53,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1054055735, now seen corresponding path program 2 times [2024-06-27 23:17:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657435322] [2024-06-27 23:17:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:53,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657435322] [2024-06-27 23:17:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657435322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305355437] [2024-06-27 23:17:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:55,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:55,526 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) [2024-06-27 23:17:55,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:55,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:55,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:56,001 INFO L124 PetriNetUnfolderBase]: 597/1033 cut-off events. [2024-06-27 23:17:56,001 INFO L125 PetriNetUnfolderBase]: For 170304/170304 co-relation queries the response was YES. [2024-06-27 23:17:56,009 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. [2024-06-27 23:17:56,012 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 227 selfloop transitions, 63 changer transitions 0/292 dead transitions. [2024-06-27 23:17:56,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 292 transitions, 4008 flow [2024-06-27 23:17:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:17:56,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 23:17:56,013 INFO L175 Difference]: Start difference. First operand has 294 places, 267 transitions, 2762 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:17:56,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 292 transitions, 4008 flow [2024-06-27 23:17:56,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 292 transitions, 3913 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:56,479 INFO L231 Difference]: Finished difference. Result has 297 places, 273 transitions, 2858 flow [2024-06-27 23:17:56,480 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} [2024-06-27 23:17:56,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-27 23:17:56,480 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 273 transitions, 2858 flow [2024-06-27 23:17:56,480 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) [2024-06-27 23:17:56,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:56,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:17:56,481 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)] === [2024-06-27 23:17:56,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1054048295, now seen corresponding path program 3 times [2024-06-27 23:17:56,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:56,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874328513] [2024-06-27 23:17:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:56,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874328513] [2024-06-27 23:17:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874328513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:58,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753773921] [2024-06-27 23:17:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:58,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:17:58,167 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) [2024-06-27 23:17:58,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:58,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:17:58,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:58,478 INFO L124 PetriNetUnfolderBase]: 593/1027 cut-off events. [2024-06-27 23:17:58,479 INFO L125 PetriNetUnfolderBase]: For 165402/165402 co-relation queries the response was YES. [2024-06-27 23:17:58,485 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. [2024-06-27 23:17:58,487 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 223 selfloop transitions, 65 changer transitions 0/290 dead transitions. [2024-06-27 23:17:58,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 290 transitions, 3854 flow [2024-06-27 23:17:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:17:58,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:17:58,488 INFO L175 Difference]: Start difference. First operand has 297 places, 273 transitions, 2858 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:17:58,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 290 transitions, 3854 flow [2024-06-27 23:17:58,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 290 transitions, 3755 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:58,941 INFO L231 Difference]: Finished difference. Result has 301 places, 273 transitions, 2894 flow [2024-06-27 23:17:58,941 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} [2024-06-27 23:17:58,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-27 23:17:58,941 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 273 transitions, 2894 flow [2024-06-27 23:17:58,942 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) [2024-06-27 23:17:58,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:58,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:58,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:17:58,942 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)] === [2024-06-27 23:17:58,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1054055952, now seen corresponding path program 4 times [2024-06-27 23:17:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495262891] [2024-06-27 23:17:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:00,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:00,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495262891] [2024-06-27 23:18:00,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495262891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:00,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:00,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626025295] [2024-06-27 23:18:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:00,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:00,335 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) [2024-06-27 23:18:00,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:00,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:00,683 INFO L124 PetriNetUnfolderBase]: 601/1040 cut-off events. [2024-06-27 23:18:00,684 INFO L125 PetriNetUnfolderBase]: For 169095/169095 co-relation queries the response was YES. [2024-06-27 23:18:00,692 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. [2024-06-27 23:18:00,695 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 62 changer transitions 0/290 dead transitions. [2024-06-27 23:18:00,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 290 transitions, 3918 flow [2024-06-27 23:18:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:18:00,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 23:18:00,697 INFO L175 Difference]: Start difference. First operand has 301 places, 273 transitions, 2894 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:18:00,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 290 transitions, 3918 flow [2024-06-27 23:18:01,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 290 transitions, 3791 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:01,262 INFO L231 Difference]: Finished difference. Result has 303 places, 277 transitions, 2936 flow [2024-06-27 23:18:01,262 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} [2024-06-27 23:18:01,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-27 23:18:01,262 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 277 transitions, 2936 flow [2024-06-27 23:18:01,262 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) [2024-06-27 23:18:01,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:01,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:01,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:18:01,263 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)] === [2024-06-27 23:18:01,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:01,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1418895506, now seen corresponding path program 5 times [2024-06-27 23:18:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:01,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850740512] [2024-06-27 23:18:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:01,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:02,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850740512] [2024-06-27 23:18:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850740512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217471413] [2024-06-27 23:18:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:02,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:02,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:02,816 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) [2024-06-27 23:18:02,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:02,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:02,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:03,361 INFO L124 PetriNetUnfolderBase]: 604/1045 cut-off events. [2024-06-27 23:18:03,361 INFO L125 PetriNetUnfolderBase]: For 172575/172575 co-relation queries the response was YES. [2024-06-27 23:18:03,369 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. [2024-06-27 23:18:03,372 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 62 changer transitions 0/292 dead transitions. [2024-06-27 23:18:03,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 292 transitions, 3952 flow [2024-06-27 23:18:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:18:03,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:18:03,374 INFO L175 Difference]: Start difference. First operand has 303 places, 277 transitions, 2936 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:18:03,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 292 transitions, 3952 flow [2024-06-27 23:18:03,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 292 transitions, 3857 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:18:03,973 INFO L231 Difference]: Finished difference. Result has 307 places, 279 transitions, 2994 flow [2024-06-27 23:18:03,973 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} [2024-06-27 23:18:03,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-27 23:18:03,974 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 279 transitions, 2994 flow [2024-06-27 23:18:03,975 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) [2024-06-27 23:18:03,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:03,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:03,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:18:03,975 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)] === [2024-06-27 23:18:03,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1054257762, now seen corresponding path program 6 times [2024-06-27 23:18:03,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167141260] [2024-06-27 23:18:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167141260] [2024-06-27 23:18:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167141260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:05,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:05,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:05,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141735390] [2024-06-27 23:18:05,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:05,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:05,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:05,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:05,429 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) [2024-06-27 23:18:05,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:05,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:05,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:05,776 INFO L124 PetriNetUnfolderBase]: 602/1042 cut-off events. [2024-06-27 23:18:05,777 INFO L125 PetriNetUnfolderBase]: For 171706/171706 co-relation queries the response was YES. [2024-06-27 23:18:05,784 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. [2024-06-27 23:18:05,788 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 61 changer transitions 0/291 dead transitions. [2024-06-27 23:18:05,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 291 transitions, 3794 flow [2024-06-27 23:18:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:18:05,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:18:05,790 INFO L175 Difference]: Start difference. First operand has 307 places, 279 transitions, 2994 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:18:05,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 291 transitions, 3794 flow [2024-06-27 23:18:06,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 291 transitions, 3662 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:06,424 INFO L231 Difference]: Finished difference. Result has 310 places, 279 transitions, 2989 flow [2024-06-27 23:18:06,440 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} [2024-06-27 23:18:06,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-27 23:18:06,440 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 279 transitions, 2989 flow [2024-06-27 23:18:06,441 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) [2024-06-27 23:18:06,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:06,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:06,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:18:06,441 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)] === [2024-06-27 23:18:06,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1054263497, now seen corresponding path program 4 times [2024-06-27 23:18:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912783639] [2024-06-27 23:18:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912783639] [2024-06-27 23:18:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912783639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:08,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:08,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:08,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132183646] [2024-06-27 23:18:08,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:08,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:08,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:08,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:08,116 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) [2024-06-27 23:18:08,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:08,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:08,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:08,617 INFO L124 PetriNetUnfolderBase]: 605/1047 cut-off events. [2024-06-27 23:18:08,617 INFO L125 PetriNetUnfolderBase]: For 175290/175290 co-relation queries the response was YES. [2024-06-27 23:18:08,625 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. [2024-06-27 23:18:08,628 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 37 changer transitions 0/292 dead transitions. [2024-06-27 23:18:08,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 292 transitions, 3625 flow [2024-06-27 23:18:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:18:08,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:18:08,629 INFO L175 Difference]: Start difference. First operand has 310 places, 279 transitions, 2989 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:18:08,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 292 transitions, 3625 flow [2024-06-27 23:18:09,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 292 transitions, 3477 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:18:09,255 INFO L231 Difference]: Finished difference. Result has 310 places, 281 transitions, 2952 flow [2024-06-27 23:18:09,255 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} [2024-06-27 23:18:09,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-27 23:18:09,255 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 281 transitions, 2952 flow [2024-06-27 23:18:09,256 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) [2024-06-27 23:18:09,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:09,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:09,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:18:09,256 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)] === [2024-06-27 23:18:09,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1418889709, now seen corresponding path program 4 times [2024-06-27 23:18:09,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295619271] [2024-06-27 23:18:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:10,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295619271] [2024-06-27 23:18:10,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295619271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:10,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:10,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:10,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856463632] [2024-06-27 23:18:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:10,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:10,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:10,893 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) [2024-06-27 23:18:10,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:10,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:10,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:11,354 INFO L124 PetriNetUnfolderBase]: 601/1041 cut-off events. [2024-06-27 23:18:11,354 INFO L125 PetriNetUnfolderBase]: For 174047/174047 co-relation queries the response was YES. [2024-06-27 23:18:11,362 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. [2024-06-27 23:18:11,366 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 62 changer transitions 0/298 dead transitions. [2024-06-27 23:18:11,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 298 transitions, 3790 flow [2024-06-27 23:18:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:18:11,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:18:11,367 INFO L175 Difference]: Start difference. First operand has 310 places, 281 transitions, 2952 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:18:11,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 298 transitions, 3790 flow [2024-06-27 23:18:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 298 transitions, 3687 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:11,919 INFO L231 Difference]: Finished difference. Result has 313 places, 281 transitions, 2978 flow [2024-06-27 23:18:11,920 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} [2024-06-27 23:18:11,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-27 23:18:11,920 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 281 transitions, 2978 flow [2024-06-27 23:18:11,920 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) [2024-06-27 23:18:11,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:11,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:18:11,921 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)] === [2024-06-27 23:18:11,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash -366676367, now seen corresponding path program 5 times [2024-06-27 23:18:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:11,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805629393] [2024-06-27 23:18:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:11,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:13,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:13,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805629393] [2024-06-27 23:18:13,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805629393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:13,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:18:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968847807] [2024-06-27 23:18:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:13,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:18:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:18:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:18:13,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:13,623 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) [2024-06-27 23:18:13,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:13,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:13,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:13,960 INFO L124 PetriNetUnfolderBase]: 604/1046 cut-off events. [2024-06-27 23:18:13,960 INFO L125 PetriNetUnfolderBase]: For 172897/172897 co-relation queries the response was YES. [2024-06-27 23:18:13,968 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. [2024-06-27 23:18:13,971 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 36 changer transitions 0/293 dead transitions. [2024-06-27 23:18:13,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 293 transitions, 3616 flow [2024-06-27 23:18:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:18:13,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 23:18:13,972 INFO L175 Difference]: Start difference. First operand has 313 places, 281 transitions, 2978 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:18:13,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 293 transitions, 3616 flow [2024-06-27 23:18:14,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 293 transitions, 3483 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:18:14,571 INFO L231 Difference]: Finished difference. Result has 314 places, 283 transitions, 2958 flow [2024-06-27 23:18:14,571 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} [2024-06-27 23:18:14,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-27 23:18:14,572 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 283 transitions, 2958 flow [2024-06-27 23:18:14,572 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) [2024-06-27 23:18:14,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:14,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:18:14,572 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)] === [2024-06-27 23:18:14,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash -359318982, now seen corresponding path program 7 times [2024-06-27 23:18:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:14,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849033092] [2024-06-27 23:18:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849033092] [2024-06-27 23:18:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849033092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:15,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698939840] [2024-06-27 23:18:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:15,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:15,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:15,991 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) [2024-06-27 23:18:15,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:15,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:15,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:16,397 INFO L124 PetriNetUnfolderBase]: 612/1059 cut-off events. [2024-06-27 23:18:16,398 INFO L125 PetriNetUnfolderBase]: For 181003/181003 co-relation queries the response was YES. [2024-06-27 23:18:16,406 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. [2024-06-27 23:18:16,410 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 68 changer transitions 0/299 dead transitions. [2024-06-27 23:18:16,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 299 transitions, 4024 flow [2024-06-27 23:18:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:18:16,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 23:18:16,411 INFO L175 Difference]: Start difference. First operand has 314 places, 283 transitions, 2958 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:18:16,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 299 transitions, 4024 flow [2024-06-27 23:18:17,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 299 transitions, 3927 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:17,025 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 3046 flow [2024-06-27 23:18:17,026 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} [2024-06-27 23:18:17,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-27 23:18:17,026 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 3046 flow [2024-06-27 23:18:17,026 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) [2024-06-27 23:18:17,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:17,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:18:17,026 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)] === [2024-06-27 23:18:17,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash -366676212, now seen corresponding path program 8 times [2024-06-27 23:18:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034483726] [2024-06-27 23:18:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:18,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034483726] [2024-06-27 23:18:18,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034483726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:18,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:18,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:18,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433898548] [2024-06-27 23:18:18,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:18,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:18,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:18,586 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) [2024-06-27 23:18:18,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:18,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:19,137 INFO L124 PetriNetUnfolderBase]: 615/1064 cut-off events. [2024-06-27 23:18:19,137 INFO L125 PetriNetUnfolderBase]: For 184663/184663 co-relation queries the response was YES. [2024-06-27 23:18:19,146 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. [2024-06-27 23:18:19,149 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 67 changer transitions 0/301 dead transitions. [2024-06-27 23:18:19,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 301 transitions, 4102 flow [2024-06-27 23:18:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:18:19,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:18:19,151 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 3046 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:18:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 301 transitions, 4102 flow [2024-06-27 23:18:19,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 301 transitions, 4004 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:18:19,861 INFO L231 Difference]: Finished difference. Result has 319 places, 289 transitions, 3113 flow [2024-06-27 23:18:19,864 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} [2024-06-27 23:18:19,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-27 23:18:19,864 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 289 transitions, 3113 flow [2024-06-27 23:18:19,864 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) [2024-06-27 23:18:19,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:19,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:18:19,865 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)] === [2024-06-27 23:18:19,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -366670632, now seen corresponding path program 9 times [2024-06-27 23:18:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557091793] [2024-06-27 23:18:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557091793] [2024-06-27 23:18:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557091793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:21,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:21,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479438064] [2024-06-27 23:18:21,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:21,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:21,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:21,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:21,295 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) [2024-06-27 23:18:21,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:21,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:21,677 INFO L124 PetriNetUnfolderBase]: 618/1069 cut-off events. [2024-06-27 23:18:21,677 INFO L125 PetriNetUnfolderBase]: For 188376/188376 co-relation queries the response was YES. [2024-06-27 23:18:21,686 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. [2024-06-27 23:18:21,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 67 changer transitions 0/303 dead transitions. [2024-06-27 23:18:21,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 303 transitions, 4177 flow [2024-06-27 23:18:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:18:21,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:18:21,691 INFO L175 Difference]: Start difference. First operand has 319 places, 289 transitions, 3113 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:18:21,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 303 transitions, 4177 flow [2024-06-27 23:18:22,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 303 transitions, 4040 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:22,426 INFO L231 Difference]: Finished difference. Result has 322 places, 291 transitions, 3141 flow [2024-06-27 23:18:22,426 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} [2024-06-27 23:18:22,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-27 23:18:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 291 transitions, 3141 flow [2024-06-27 23:18:22,426 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) [2024-06-27 23:18:22,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:22,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:18:22,427 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)] === [2024-06-27 23:18:22,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash 5590229, now seen corresponding path program 1 times [2024-06-27 23:18:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622946083] [2024-06-27 23:18:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622946083] [2024-06-27 23:18:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622946083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:18:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357180227] [2024-06-27 23:18:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:18:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:18:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:18:24,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:24,401 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) [2024-06-27 23:18:24,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:24,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:24,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:24,762 INFO L124 PetriNetUnfolderBase]: 572/1022 cut-off events. [2024-06-27 23:18:24,762 INFO L125 PetriNetUnfolderBase]: For 201484/201487 co-relation queries the response was YES. [2024-06-27 23:18:24,770 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. [2024-06-27 23:18:24,774 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 27 changer transitions 0/304 dead transitions. [2024-06-27 23:18:24,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 304 transitions, 3725 flow [2024-06-27 23:18:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:18:24,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 23:18:24,775 INFO L175 Difference]: Start difference. First operand has 322 places, 291 transitions, 3141 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:18:24,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 304 transitions, 3725 flow [2024-06-27 23:18:25,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 304 transitions, 3598 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:25,496 INFO L231 Difference]: Finished difference. Result has 325 places, 292 transitions, 3090 flow [2024-06-27 23:18:25,497 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} [2024-06-27 23:18:25,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-27 23:18:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 292 transitions, 3090 flow [2024-06-27 23:18:25,497 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) [2024-06-27 23:18:25,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:25,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:25,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:18:25,498 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)] === [2024-06-27 23:18:25,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 5580309, now seen corresponding path program 5 times [2024-06-27 23:18:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528205666] [2024-06-27 23:18:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528205666] [2024-06-27 23:18:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528205666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:27,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:27,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:18:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961547731] [2024-06-27 23:18:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:18:27,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:18:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:18:27,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:27,350 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) [2024-06-27 23:18:27,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:27,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:27,996 INFO L124 PetriNetUnfolderBase]: 644/1113 cut-off events. [2024-06-27 23:18:27,996 INFO L125 PetriNetUnfolderBase]: For 211873/211873 co-relation queries the response was YES. [2024-06-27 23:18:28,005 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. [2024-06-27 23:18:28,008 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 241 selfloop transitions, 71 changer transitions 0/314 dead transitions. [2024-06-27 23:18:28,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 314 transitions, 4237 flow [2024-06-27 23:18:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:18:28,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 23:18:28,009 INFO L175 Difference]: Start difference. First operand has 325 places, 292 transitions, 3090 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:18:28,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 314 transitions, 4237 flow [2024-06-27 23:18:28,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 314 transitions, 4121 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:18:28,824 INFO L231 Difference]: Finished difference. Result has 327 places, 298 transitions, 3189 flow [2024-06-27 23:18:28,824 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} [2024-06-27 23:18:28,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-27 23:18:28,824 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 298 transitions, 3189 flow [2024-06-27 23:18:28,824 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) [2024-06-27 23:18:28,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:28,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:28,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:18:28,825 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)] === [2024-06-27 23:18:28,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash 5320839, now seen corresponding path program 6 times [2024-06-27 23:18:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:28,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107783267] [2024-06-27 23:18:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:30,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:30,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107783267] [2024-06-27 23:18:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107783267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293579459] [2024-06-27 23:18:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:30,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:30,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:30,400 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) [2024-06-27 23:18:30,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:30,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:30,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:30,730 INFO L124 PetriNetUnfolderBase]: 660/1139 cut-off events. [2024-06-27 23:18:30,730 INFO L125 PetriNetUnfolderBase]: For 227248/227248 co-relation queries the response was YES. [2024-06-27 23:18:30,740 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. [2024-06-27 23:18:30,743 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 68 changer transitions 0/320 dead transitions. [2024-06-27 23:18:30,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 320 transitions, 4557 flow [2024-06-27 23:18:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:18:30,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 23:18:30,745 INFO L175 Difference]: Start difference. First operand has 327 places, 298 transitions, 3189 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:18:30,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 320 transitions, 4557 flow [2024-06-27 23:18:31,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 320 transitions, 4438 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:18:31,608 INFO L231 Difference]: Finished difference. Result has 331 places, 302 transitions, 3263 flow [2024-06-27 23:18:31,608 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} [2024-06-27 23:18:31,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-27 23:18:31,609 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 302 transitions, 3263 flow [2024-06-27 23:18:31,609 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) [2024-06-27 23:18:31,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:31,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:18:31,609 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)] === [2024-06-27 23:18:31,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 5313399, now seen corresponding path program 7 times [2024-06-27 23:18:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231307299] [2024-06-27 23:18:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231307299] [2024-06-27 23:18:33,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231307299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:33,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:33,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352985683] [2024-06-27 23:18:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:33,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:33,242 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) [2024-06-27 23:18:33,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:33,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:33,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:33,768 INFO L124 PetriNetUnfolderBase]: 656/1133 cut-off events. [2024-06-27 23:18:33,769 INFO L125 PetriNetUnfolderBase]: For 220619/220619 co-relation queries the response was YES. [2024-06-27 23:18:33,776 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. [2024-06-27 23:18:33,779 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 248 selfloop transitions, 69 changer transitions 0/319 dead transitions. [2024-06-27 23:18:33,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 319 transitions, 4369 flow [2024-06-27 23:18:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:18:33,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:18:33,780 INFO L175 Difference]: Start difference. First operand has 331 places, 302 transitions, 3263 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:18:33,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 319 transitions, 4369 flow [2024-06-27 23:18:34,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 319 transitions, 4245 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:34,482 INFO L231 Difference]: Finished difference. Result has 335 places, 302 transitions, 3282 flow [2024-06-27 23:18:34,482 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} [2024-06-27 23:18:34,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-27 23:18:34,483 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 302 transitions, 3282 flow [2024-06-27 23:18:34,483 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) [2024-06-27 23:18:34,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:34,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:34,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:18:34,483 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)] === [2024-06-27 23:18:34,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2038251, now seen corresponding path program 8 times [2024-06-27 23:18:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:34,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340746893] [2024-06-27 23:18:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:34,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:35,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340746893] [2024-06-27 23:18:35,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340746893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:35,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:35,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:35,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61775661] [2024-06-27 23:18:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:35,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:36,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:36,063 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) [2024-06-27 23:18:36,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:36,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:36,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:36,540 INFO L124 PetriNetUnfolderBase]: 662/1143 cut-off events. [2024-06-27 23:18:36,540 INFO L125 PetriNetUnfolderBase]: For 224967/224967 co-relation queries the response was YES. [2024-06-27 23:18:36,550 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. [2024-06-27 23:18:36,554 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 249 selfloop transitions, 70 changer transitions 0/321 dead transitions. [2024-06-27 23:18:36,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 321 transitions, 4422 flow [2024-06-27 23:18:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:18:36,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 23:18:36,563 INFO L175 Difference]: Start difference. First operand has 335 places, 302 transitions, 3282 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:18:36,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 321 transitions, 4422 flow [2024-06-27 23:18:37,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 321 transitions, 4283 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:37,212 INFO L231 Difference]: Finished difference. Result has 337 places, 304 transitions, 3314 flow [2024-06-27 23:18:37,213 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} [2024-06-27 23:18:37,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-27 23:18:37,213 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 304 transitions, 3314 flow [2024-06-27 23:18:37,213 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) [2024-06-27 23:18:37,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:37,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:37,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:18:37,214 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)] === [2024-06-27 23:18:37,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:37,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1836441, now seen corresponding path program 9 times [2024-06-27 23:18:37,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:37,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565129857] [2024-06-27 23:18:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:38,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565129857] [2024-06-27 23:18:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565129857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269065470] [2024-06-27 23:18:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:38,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:38,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:38,771 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) [2024-06-27 23:18:38,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:38,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:39,304 INFO L124 PetriNetUnfolderBase]: 668/1153 cut-off events. [2024-06-27 23:18:39,304 INFO L125 PetriNetUnfolderBase]: For 229125/229125 co-relation queries the response was YES. [2024-06-27 23:18:39,312 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. [2024-06-27 23:18:39,316 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 253 selfloop transitions, 69 changer transitions 0/324 dead transitions. [2024-06-27 23:18:39,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 324 transitions, 4468 flow [2024-06-27 23:18:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:18:39,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:18:39,317 INFO L175 Difference]: Start difference. First operand has 337 places, 304 transitions, 3314 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:18:39,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 324 transitions, 4468 flow [2024-06-27 23:18:40,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 324 transitions, 4339 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:40,064 INFO L231 Difference]: Finished difference. Result has 340 places, 306 transitions, 3354 flow [2024-06-27 23:18:40,064 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} [2024-06-27 23:18:40,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-27 23:18:40,065 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 306 transitions, 3354 flow [2024-06-27 23:18:40,065 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) [2024-06-27 23:18:40,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:40,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:18:40,065 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)] === [2024-06-27 23:18:40,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:40,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1836658, now seen corresponding path program 10 times [2024-06-27 23:18:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:40,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598943579] [2024-06-27 23:18:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:41,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:41,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598943579] [2024-06-27 23:18:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598943579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:41,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858272293] [2024-06-27 23:18:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:41,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:41,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:41,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:41,513 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) [2024-06-27 23:18:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:41,885 INFO L124 PetriNetUnfolderBase]: 666/1150 cut-off events. [2024-06-27 23:18:41,885 INFO L125 PetriNetUnfolderBase]: For 221496/221496 co-relation queries the response was YES. [2024-06-27 23:18:41,895 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. [2024-06-27 23:18:41,898 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 66 changer transitions 0/317 dead transitions. [2024-06-27 23:18:41,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 317 transitions, 4228 flow [2024-06-27 23:18:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:18:41,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:18:41,899 INFO L175 Difference]: Start difference. First operand has 340 places, 306 transitions, 3354 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:18:41,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 317 transitions, 4228 flow [2024-06-27 23:18:42,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 317 transitions, 4033 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:18:42,589 INFO L231 Difference]: Finished difference. Result has 340 places, 306 transitions, 3296 flow [2024-06-27 23:18:42,589 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} [2024-06-27 23:18:42,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-27 23:18:42,590 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 306 transitions, 3296 flow [2024-06-27 23:18:42,590 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) [2024-06-27 23:18:42,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:42,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:42,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:18:42,591 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)] === [2024-06-27 23:18:42,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1829001, now seen corresponding path program 10 times [2024-06-27 23:18:42,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:42,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053604476] [2024-06-27 23:18:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:42,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:44,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:44,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053604476] [2024-06-27 23:18:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053604476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:44,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:44,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797225555] [2024-06-27 23:18:44,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:44,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:44,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:44,137 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) [2024-06-27 23:18:44,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:44,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:44,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:44,481 INFO L124 PetriNetUnfolderBase]: 662/1144 cut-off events. [2024-06-27 23:18:44,482 INFO L125 PetriNetUnfolderBase]: For 218921/218921 co-relation queries the response was YES. [2024-06-27 23:18:44,491 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. [2024-06-27 23:18:44,494 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 70 changer transitions 0/322 dead transitions. [2024-06-27 23:18:44,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 322 transitions, 4202 flow [2024-06-27 23:18:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:18:44,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 23:18:44,496 INFO L175 Difference]: Start difference. First operand has 340 places, 306 transitions, 3296 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:18:44,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 322 transitions, 4202 flow [2024-06-27 23:18:45,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 322 transitions, 4004 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:45,261 INFO L231 Difference]: Finished difference. Result has 339 places, 306 transitions, 3243 flow [2024-06-27 23:18:45,261 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} [2024-06-27 23:18:45,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-27 23:18:45,262 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 306 transitions, 3243 flow [2024-06-27 23:18:45,262 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) [2024-06-27 23:18:45,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:45,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:45,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:18:45,262 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)] === [2024-06-27 23:18:45,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash 997338949, now seen corresponding path program 11 times [2024-06-27 23:18:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426135094] [2024-06-27 23:18:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426135094] [2024-06-27 23:18:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426135094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:46,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:46,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:46,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423765588] [2024-06-27 23:18:46,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:46,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:47,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:47,011 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) [2024-06-27 23:18:47,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:47,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:47,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:47,395 INFO L124 PetriNetUnfolderBase]: 678/1170 cut-off events. [2024-06-27 23:18:47,395 INFO L125 PetriNetUnfolderBase]: For 229157/229157 co-relation queries the response was YES. [2024-06-27 23:18:47,405 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. [2024-06-27 23:18:47,409 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 35 changer transitions 0/326 dead transitions. [2024-06-27 23:18:47,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 326 transitions, 4436 flow [2024-06-27 23:18:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:18:47,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 23:18:47,410 INFO L175 Difference]: Start difference. First operand has 339 places, 306 transitions, 3243 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:18:47,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 326 transitions, 4436 flow [2024-06-27 23:18:48,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 326 transitions, 4261 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:48,329 INFO L231 Difference]: Finished difference. Result has 341 places, 313 transitions, 3212 flow [2024-06-27 23:18:48,329 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} [2024-06-27 23:18:48,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-27 23:18:48,330 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 313 transitions, 3212 flow [2024-06-27 23:18:48,330 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) [2024-06-27 23:18:48,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:48,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:48,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:18:48,330 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)] === [2024-06-27 23:18:48,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:48,331 INFO L85 PathProgramCache]: Analyzing trace with hash 384399930, now seen corresponding path program 11 times [2024-06-27 23:18:48,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:48,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270045654] [2024-06-27 23:18:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:49,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270045654] [2024-06-27 23:18:49,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270045654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:49,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:49,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:49,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599932146] [2024-06-27 23:18:49,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:49,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:49,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:49,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:49,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:49,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:49,745 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) [2024-06-27 23:18:49,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:49,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:49,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:50,169 INFO L124 PetriNetUnfolderBase]: 686/1183 cut-off events. [2024-06-27 23:18:50,169 INFO L125 PetriNetUnfolderBase]: For 239253/239253 co-relation queries the response was YES. [2024-06-27 23:18:50,179 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. [2024-06-27 23:18:50,182 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 32 changer transitions 0/328 dead transitions. [2024-06-27 23:18:50,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 328 transitions, 4384 flow [2024-06-27 23:18:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:18:50,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-27 23:18:50,184 INFO L175 Difference]: Start difference. First operand has 341 places, 313 transitions, 3212 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:18:50,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 328 transitions, 4384 flow [2024-06-27 23:18:50,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 328 transitions, 4348 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 23:18:50,983 INFO L231 Difference]: Finished difference. Result has 347 places, 317 transitions, 3293 flow [2024-06-27 23:18:50,984 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} [2024-06-27 23:18:50,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 23:18:50,984 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 317 transitions, 3293 flow [2024-06-27 23:18:50,984 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) [2024-06-27 23:18:50,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:50,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:50,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:18:50,985 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)] === [2024-06-27 23:18:50,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1756519061, now seen corresponding path program 12 times [2024-06-27 23:18:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338775880] [2024-06-27 23:18:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338775880] [2024-06-27 23:18:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338775880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:52,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:52,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547110625] [2024-06-27 23:18:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:52,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:52,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:52,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:52,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:52,711 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) [2024-06-27 23:18:52,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:52,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:52,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:53,274 INFO L124 PetriNetUnfolderBase]: 707/1217 cut-off events. [2024-06-27 23:18:53,275 INFO L125 PetriNetUnfolderBase]: For 269315/269315 co-relation queries the response was YES. [2024-06-27 23:18:53,283 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. [2024-06-27 23:18:53,286 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 296 selfloop transitions, 42 changer transitions 0/340 dead transitions. [2024-06-27 23:18:53,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 340 transitions, 4780 flow [2024-06-27 23:18:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:18:53,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:18:53,288 INFO L175 Difference]: Start difference. First operand has 347 places, 317 transitions, 3293 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:18:53,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 340 transitions, 4780 flow [2024-06-27 23:18:54,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 340 transitions, 4704 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:54,069 INFO L231 Difference]: Finished difference. Result has 351 places, 323 transitions, 3385 flow [2024-06-27 23:18:54,069 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} [2024-06-27 23:18:54,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-27 23:18:54,069 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 323 transitions, 3385 flow [2024-06-27 23:18:54,069 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) [2024-06-27 23:18:54,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:54,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:18:54,070 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)] === [2024-06-27 23:18:54,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1756242231, now seen corresponding path program 2 times [2024-06-27 23:18:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173255092] [2024-06-27 23:18:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173255092] [2024-06-27 23:18:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173255092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:55,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:55,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490268655] [2024-06-27 23:18:55,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:55,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:55,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:56,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:56,063 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) [2024-06-27 23:18:56,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:56,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:56,574 INFO L124 PetriNetUnfolderBase]: 650/1155 cut-off events. [2024-06-27 23:18:56,574 INFO L125 PetriNetUnfolderBase]: For 286165/286178 co-relation queries the response was YES. [2024-06-27 23:18:56,584 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. [2024-06-27 23:18:56,588 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 22 changer transitions 0/336 dead transitions. [2024-06-27 23:18:56,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 336 transitions, 4035 flow [2024-06-27 23:18:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:18:56,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 23:18:56,590 INFO L175 Difference]: Start difference. First operand has 351 places, 323 transitions, 3385 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:18:56,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 336 transitions, 4035 flow [2024-06-27 23:18:57,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 336 transitions, 3934 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:57,544 INFO L231 Difference]: Finished difference. Result has 353 places, 324 transitions, 3352 flow [2024-06-27 23:18:57,544 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} [2024-06-27 23:18:57,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-27 23:18:57,544 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 324 transitions, 3352 flow [2024-06-27 23:18:57,544 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) [2024-06-27 23:18:57,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:57,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:18:57,545 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)] === [2024-06-27 23:18:57,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1763876508, now seen corresponding path program 12 times [2024-06-27 23:18:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102672718] [2024-06-27 23:18:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102672718] [2024-06-27 23:18:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102672718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865217131] [2024-06-27 23:18:58,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:58,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:18:58,967 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) [2024-06-27 23:18:58,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:58,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:18:58,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:59,535 INFO L124 PetriNetUnfolderBase]: 714/1230 cut-off events. [2024-06-27 23:18:59,536 INFO L125 PetriNetUnfolderBase]: For 272130/272130 co-relation queries the response was YES. [2024-06-27 23:18:59,545 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. [2024-06-27 23:18:59,549 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 40 changer transitions 0/336 dead transitions. [2024-06-27 23:18:59,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 336 transitions, 4294 flow [2024-06-27 23:18:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:18:59,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 23:18:59,550 INFO L175 Difference]: Start difference. First operand has 353 places, 324 transitions, 3352 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:18:59,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 336 transitions, 4294 flow [2024-06-27 23:19:00,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 336 transitions, 4214 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:00,297 INFO L231 Difference]: Finished difference. Result has 354 places, 326 transitions, 3379 flow [2024-06-27 23:19:00,297 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} [2024-06-27 23:19:00,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-27 23:19:00,298 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 326 transitions, 3379 flow [2024-06-27 23:19:00,298 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) [2024-06-27 23:19:00,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:00,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:00,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:19:00,298 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)] === [2024-06-27 23:19:00,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash 384667057, now seen corresponding path program 13 times [2024-06-27 23:19:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:00,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389752673] [2024-06-27 23:19:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389752673] [2024-06-27 23:19:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389752673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:01,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:01,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090748303] [2024-06-27 23:19:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:01,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:01,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:01,935 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) [2024-06-27 23:19:01,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:01,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:01,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:02,356 INFO L124 PetriNetUnfolderBase]: 718/1237 cut-off events. [2024-06-27 23:19:02,356 INFO L125 PetriNetUnfolderBase]: For 276612/276612 co-relation queries the response was YES. [2024-06-27 23:19:02,367 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. [2024-06-27 23:19:02,370 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 296 selfloop transitions, 47 changer transitions 0/345 dead transitions. [2024-06-27 23:19:02,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 345 transitions, 4623 flow [2024-06-27 23:19:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:19:02,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 23:19:02,372 INFO L175 Difference]: Start difference. First operand has 354 places, 326 transitions, 3379 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:19:02,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 345 transitions, 4623 flow [2024-06-27 23:19:03,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 345 transitions, 4458 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:03,200 INFO L231 Difference]: Finished difference. Result has 357 places, 330 transitions, 3364 flow [2024-06-27 23:19:03,200 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} [2024-06-27 23:19:03,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-27 23:19:03,201 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 330 transitions, 3364 flow [2024-06-27 23:19:03,201 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) [2024-06-27 23:19:03,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:03,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:19:03,202 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)] === [2024-06-27 23:19:03,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 377042545, now seen corresponding path program 6 times [2024-06-27 23:19:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507472569] [2024-06-27 23:19:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:04,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507472569] [2024-06-27 23:19:04,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507472569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:04,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:04,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072743364] [2024-06-27 23:19:04,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:04,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:04,818 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) [2024-06-27 23:19:04,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:04,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:04,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:05,370 INFO L124 PetriNetUnfolderBase]: 721/1242 cut-off events. [2024-06-27 23:19:05,371 INFO L125 PetriNetUnfolderBase]: For 274573/274573 co-relation queries the response was YES. [2024-06-27 23:19:05,380 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. [2024-06-27 23:19:05,384 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 321 selfloop transitions, 18 changer transitions 0/341 dead transitions. [2024-06-27 23:19:05,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 341 transitions, 4098 flow [2024-06-27 23:19:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 23:19:05,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-27 23:19:05,385 INFO L175 Difference]: Start difference. First operand has 357 places, 330 transitions, 3364 flow. Second operand 11 states and 113 transitions. [2024-06-27 23:19:05,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 341 transitions, 4098 flow [2024-06-27 23:19:06,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 341 transitions, 4010 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:06,269 INFO L231 Difference]: Finished difference. Result has 361 places, 332 transitions, 3357 flow [2024-06-27 23:19:06,269 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} [2024-06-27 23:19:06,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-27 23:19:06,269 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 332 transitions, 3357 flow [2024-06-27 23:19:06,270 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) [2024-06-27 23:19:06,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:06,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:06,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:19:06,270 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)] === [2024-06-27 23:19:06,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 377257747, now seen corresponding path program 14 times [2024-06-27 23:19:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274265425] [2024-06-27 23:19:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:07,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274265425] [2024-06-27 23:19:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274265425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:07,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292812230] [2024-06-27 23:19:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:07,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:07,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:07,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:07,970 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) [2024-06-27 23:19:07,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:07,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:07,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:08,367 INFO L124 PetriNetUnfolderBase]: 724/1247 cut-off events. [2024-06-27 23:19:08,367 INFO L125 PetriNetUnfolderBase]: For 279179/279179 co-relation queries the response was YES. [2024-06-27 23:19:08,378 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. [2024-06-27 23:19:08,382 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 38 changer transitions 0/351 dead transitions. [2024-06-27 23:19:08,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 351 transitions, 4614 flow [2024-06-27 23:19:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:19:08,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 23:19:08,383 INFO L175 Difference]: Start difference. First operand has 361 places, 332 transitions, 3357 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:19:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 351 transitions, 4614 flow [2024-06-27 23:19:09,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 351 transitions, 4549 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:09,441 INFO L231 Difference]: Finished difference. Result has 364 places, 339 transitions, 3452 flow [2024-06-27 23:19:09,441 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} [2024-06-27 23:19:09,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-27 23:19:09,441 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 339 transitions, 3452 flow [2024-06-27 23:19:09,441 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) [2024-06-27 23:19:09,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:09,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:09,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:19:09,442 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)] === [2024-06-27 23:19:09,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1763669118, now seen corresponding path program 13 times [2024-06-27 23:19:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541966243] [2024-06-27 23:19:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:10,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:10,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541966243] [2024-06-27 23:19:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541966243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:10,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:10,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896590488] [2024-06-27 23:19:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:10,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:10,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:10,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:10,793 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) [2024-06-27 23:19:10,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:10,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:10,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:11,253 INFO L124 PetriNetUnfolderBase]: 727/1252 cut-off events. [2024-06-27 23:19:11,254 INFO L125 PetriNetUnfolderBase]: For 283830/283830 co-relation queries the response was YES. [2024-06-27 23:19:11,265 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. [2024-06-27 23:19:11,268 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 313 selfloop transitions, 37 changer transitions 0/352 dead transitions. [2024-06-27 23:19:11,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 352 transitions, 4670 flow [2024-06-27 23:19:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:19:11,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:19:11,270 INFO L175 Difference]: Start difference. First operand has 364 places, 339 transitions, 3452 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:19:11,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 352 transitions, 4670 flow [2024-06-27 23:19:12,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 352 transitions, 4636 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:12,106 INFO L231 Difference]: Finished difference. Result has 370 places, 341 transitions, 3515 flow [2024-06-27 23:19:12,106 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} [2024-06-27 23:19:12,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-27 23:19:12,107 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 341 transitions, 3515 flow [2024-06-27 23:19:12,107 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) [2024-06-27 23:19:12,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:12,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:12,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:19:12,107 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)] === [2024-06-27 23:19:12,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash 377250307, now seen corresponding path program 15 times [2024-06-27 23:19:12,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:12,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099120542] [2024-06-27 23:19:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:12,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099120542] [2024-06-27 23:19:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099120542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:13,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:13,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862493801] [2024-06-27 23:19:13,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:13,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:13,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:13,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:13,718 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) [2024-06-27 23:19:13,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:13,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:13,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:14,238 INFO L124 PetriNetUnfolderBase]: 738/1270 cut-off events. [2024-06-27 23:19:14,238 INFO L125 PetriNetUnfolderBase]: For 303382/303382 co-relation queries the response was YES. [2024-06-27 23:19:14,250 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. [2024-06-27 23:19:14,254 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 56 changer transitions 0/361 dead transitions. [2024-06-27 23:19:14,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 361 transitions, 5062 flow [2024-06-27 23:19:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:19:14,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 23:19:14,256 INFO L175 Difference]: Start difference. First operand has 370 places, 341 transitions, 3515 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:19:14,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 361 transitions, 5062 flow [2024-06-27 23:19:15,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 361 transitions, 4993 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:15,096 INFO L231 Difference]: Finished difference. Result has 374 places, 346 transitions, 3626 flow [2024-06-27 23:19:15,096 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} [2024-06-27 23:19:15,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-27 23:19:15,097 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 346 transitions, 3626 flow [2024-06-27 23:19:15,097 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) [2024-06-27 23:19:15,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:15,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:15,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:19:15,097 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)] === [2024-06-27 23:19:15,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -393429485, now seen corresponding path program 16 times [2024-06-27 23:19:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:15,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049986934] [2024-06-27 23:19:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:16,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049986934] [2024-06-27 23:19:16,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049986934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:16,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:16,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434476459] [2024-06-27 23:19:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:16,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:16,724 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) [2024-06-27 23:19:16,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:16,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:16,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:17,228 INFO L124 PetriNetUnfolderBase]: 734/1264 cut-off events. [2024-06-27 23:19:17,228 INFO L125 PetriNetUnfolderBase]: For 294092/294092 co-relation queries the response was YES. [2024-06-27 23:19:17,239 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. [2024-06-27 23:19:17,242 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 63 changer transitions 0/363 dead transitions. [2024-06-27 23:19:17,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 363 transitions, 4657 flow [2024-06-27 23:19:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:19:17,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-27 23:19:17,243 INFO L175 Difference]: Start difference. First operand has 374 places, 346 transitions, 3626 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:19:17,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 363 transitions, 4657 flow [2024-06-27 23:19:18,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 363 transitions, 4495 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:18,057 INFO L231 Difference]: Finished difference. Result has 377 places, 346 transitions, 3596 flow [2024-06-27 23:19:18,058 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} [2024-06-27 23:19:18,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 23:19:18,058 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 346 transitions, 3596 flow [2024-06-27 23:19:18,058 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) [2024-06-27 23:19:18,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:18,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:18,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:19:18,059 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)] === [2024-06-27 23:19:18,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash -393429702, now seen corresponding path program 14 times [2024-06-27 23:19:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:18,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429831719] [2024-06-27 23:19:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:19,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429831719] [2024-06-27 23:19:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429831719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:19,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785843081] [2024-06-27 23:19:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:19,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:19,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:19,401 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) [2024-06-27 23:19:19,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:19,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:19,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:19,854 INFO L124 PetriNetUnfolderBase]: 732/1261 cut-off events. [2024-06-27 23:19:19,854 INFO L125 PetriNetUnfolderBase]: For 283780/283780 co-relation queries the response was YES. [2024-06-27 23:19:19,866 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. [2024-06-27 23:19:19,869 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 315 selfloop transitions, 39 changer transitions 0/356 dead transitions. [2024-06-27 23:19:19,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 356 transitions, 4570 flow [2024-06-27 23:19:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:19:19,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 23:19:19,871 INFO L175 Difference]: Start difference. First operand has 377 places, 346 transitions, 3596 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:19:19,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 356 transitions, 4570 flow [2024-06-27 23:19:20,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 356 transitions, 4370 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:19:20,723 INFO L231 Difference]: Finished difference. Result has 377 places, 346 transitions, 3479 flow [2024-06-27 23:19:20,723 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} [2024-06-27 23:19:20,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 23:19:20,724 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 346 transitions, 3479 flow [2024-06-27 23:19:20,724 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) [2024-06-27 23:19:20,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:20,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:20,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:19:20,724 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)] === [2024-06-27 23:19:20,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash 632561308, now seen corresponding path program 15 times [2024-06-27 23:19:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192283424] [2024-06-27 23:19:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192283424] [2024-06-27 23:19:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192283424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:21,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:21,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881266419] [2024-06-27 23:19:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:21,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:21,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:21,986 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) [2024-06-27 23:19:21,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:21,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:21,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:22,440 INFO L124 PetriNetUnfolderBase]: 730/1258 cut-off events. [2024-06-27 23:19:22,440 INFO L125 PetriNetUnfolderBase]: For 280259/280259 co-relation queries the response was YES. [2024-06-27 23:19:22,453 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. [2024-06-27 23:19:22,458 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 18 changer transitions 0/355 dead transitions. [2024-06-27 23:19:22,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 355 transitions, 4205 flow [2024-06-27 23:19:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:19:22,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 23:19:22,459 INFO L175 Difference]: Start difference. First operand has 377 places, 346 transitions, 3479 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:19:22,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 355 transitions, 4205 flow [2024-06-27 23:19:23,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 355 transitions, 4128 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:23,317 INFO L231 Difference]: Finished difference. Result has 379 places, 346 transitions, 3443 flow [2024-06-27 23:19:23,317 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} [2024-06-27 23:19:23,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-27 23:19:23,318 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 346 transitions, 3443 flow [2024-06-27 23:19:23,318 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) [2024-06-27 23:19:23,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:23,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:23,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:19:23,318 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)] === [2024-06-27 23:19:23,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash 957579475, now seen corresponding path program 3 times [2024-06-27 23:19:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167008539] [2024-06-27 23:19:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:24,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167008539] [2024-06-27 23:19:24,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167008539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:24,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:24,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670051463] [2024-06-27 23:19:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:24,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:24,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:24,869 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) [2024-06-27 23:19:24,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:24,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:24,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:25,359 INFO L124 PetriNetUnfolderBase]: 672/1195 cut-off events. [2024-06-27 23:19:25,359 INFO L125 PetriNetUnfolderBase]: For 306329/306342 co-relation queries the response was YES. [2024-06-27 23:19:25,370 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. [2024-06-27 23:19:25,373 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 297 selfloop transitions, 19 changer transitions 0/356 dead transitions. [2024-06-27 23:19:25,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 356 transitions, 4115 flow [2024-06-27 23:19:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:19:25,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 23:19:25,375 INFO L175 Difference]: Start difference. First operand has 379 places, 346 transitions, 3443 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:19:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 356 transitions, 4115 flow [2024-06-27 23:19:26,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 356 transitions, 4022 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 23:19:26,200 INFO L231 Difference]: Finished difference. Result has 377 places, 347 transitions, 3415 flow [2024-06-27 23:19:26,201 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} [2024-06-27 23:19:26,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-27 23:19:26,201 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 347 transitions, 3415 flow [2024-06-27 23:19:26,201 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) [2024-06-27 23:19:26,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:26,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:26,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:19:26,202 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)] === [2024-06-27 23:19:26,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash 632568965, now seen corresponding path program 17 times [2024-06-27 23:19:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:26,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199590995] [2024-06-27 23:19:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:26,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:27,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:27,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199590995] [2024-06-27 23:19:27,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199590995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:27,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:27,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:27,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900239958] [2024-06-27 23:19:27,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:27,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:27,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:27,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:27,729 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) [2024-06-27 23:19:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:28,154 INFO L124 PetriNetUnfolderBase]: 756/1302 cut-off events. [2024-06-27 23:19:28,154 INFO L125 PetriNetUnfolderBase]: For 313079/313079 co-relation queries the response was YES. [2024-06-27 23:19:28,168 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. [2024-06-27 23:19:28,171 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 335 selfloop transitions, 31 changer transitions 0/368 dead transitions. [2024-06-27 23:19:28,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 368 transitions, 4775 flow [2024-06-27 23:19:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:19:28,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 23:19:28,173 INFO L175 Difference]: Start difference. First operand has 377 places, 347 transitions, 3415 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:19:28,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 368 transitions, 4775 flow [2024-06-27 23:19:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 368 transitions, 4722 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:29,117 INFO L231 Difference]: Finished difference. Result has 380 places, 353 transitions, 3509 flow [2024-06-27 23:19:29,117 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} [2024-06-27 23:19:29,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 23:19:29,117 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 353 transitions, 3509 flow [2024-06-27 23:19:29,118 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) [2024-06-27 23:19:29,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:29,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:29,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:19:29,118 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)] === [2024-06-27 23:19:29,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash 632561525, now seen corresponding path program 18 times [2024-06-27 23:19:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:29,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978134546] [2024-06-27 23:19:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:30,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:30,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978134546] [2024-06-27 23:19:30,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978134546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:30,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:30,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968111531] [2024-06-27 23:19:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:30,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:30,711 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) [2024-06-27 23:19:30,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:30,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:30,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:31,222 INFO L124 PetriNetUnfolderBase]: 752/1296 cut-off events. [2024-06-27 23:19:31,222 INFO L125 PetriNetUnfolderBase]: For 302269/302269 co-relation queries the response was YES. [2024-06-27 23:19:31,235 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. [2024-06-27 23:19:31,238 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 333 selfloop transitions, 33 changer transitions 0/368 dead transitions. [2024-06-27 23:19:31,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 368 transitions, 4553 flow [2024-06-27 23:19:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:19:31,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 23:19:31,239 INFO L175 Difference]: Start difference. First operand has 380 places, 353 transitions, 3509 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:19:31,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 368 transitions, 4553 flow [2024-06-27 23:19:32,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 368 transitions, 4433 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:32,159 INFO L231 Difference]: Finished difference. Result has 384 places, 353 transitions, 3460 flow [2024-06-27 23:19:32,159 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} [2024-06-27 23:19:32,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 23:19:32,160 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 353 transitions, 3460 flow [2024-06-27 23:19:32,160 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) [2024-06-27 23:19:32,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:32,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:19:32,162 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)] === [2024-06-27 23:19:32,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 957965425, now seen corresponding path program 4 times [2024-06-27 23:19:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:32,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591638067] [2024-06-27 23:19:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:32,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:33,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591638067] [2024-06-27 23:19:33,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591638067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:33,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:33,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:33,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543280634] [2024-06-27 23:19:33,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:33,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:33,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:33,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:33,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:33,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:33,871 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) [2024-06-27 23:19:33,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:33,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:33,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:34,326 INFO L124 PetriNetUnfolderBase]: 690/1227 cut-off events. [2024-06-27 23:19:34,326 INFO L125 PetriNetUnfolderBase]: For 320923/320942 co-relation queries the response was YES. [2024-06-27 23:19:34,338 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. [2024-06-27 23:19:34,342 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 308 selfloop transitions, 15 changer transitions 0/364 dead transitions. [2024-06-27 23:19:34,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 364 transitions, 4150 flow [2024-06-27 23:19:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:19:34,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 23:19:34,346 INFO L175 Difference]: Start difference. First operand has 384 places, 353 transitions, 3460 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:19:34,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 364 transitions, 4150 flow [2024-06-27 23:19:35,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 364 transitions, 4039 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:19:35,244 INFO L231 Difference]: Finished difference. Result has 384 places, 354 transitions, 3407 flow [2024-06-27 23:19:35,244 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} [2024-06-27 23:19:35,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-27 23:19:35,262 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 354 transitions, 3407 flow [2024-06-27 23:19:35,262 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) [2024-06-27 23:19:35,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:35,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:35,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:19:35,263 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)] === [2024-06-27 23:19:35,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash 946527665, now seen corresponding path program 19 times [2024-06-27 23:19:35,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:35,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481933224] [2024-06-27 23:19:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:36,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:36,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481933224] [2024-06-27 23:19:36,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481933224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:36,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:36,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670515931] [2024-06-27 23:19:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:36,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:36,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:36,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:36,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:36,813 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) [2024-06-27 23:19:36,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:36,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:36,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:37,282 INFO L124 PetriNetUnfolderBase]: 760/1311 cut-off events. [2024-06-27 23:19:37,283 INFO L125 PetriNetUnfolderBase]: For 311523/311523 co-relation queries the response was YES. [2024-06-27 23:19:37,297 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. [2024-06-27 23:19:37,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 339 selfloop transitions, 27 changer transitions 0/368 dead transitions. [2024-06-27 23:19:37,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 368 transitions, 4211 flow [2024-06-27 23:19:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:19:37,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 23:19:37,302 INFO L175 Difference]: Start difference. First operand has 384 places, 354 transitions, 3407 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:19:37,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 368 transitions, 4211 flow [2024-06-27 23:19:38,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 368 transitions, 4163 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:38,275 INFO L231 Difference]: Finished difference. Result has 387 places, 358 transitions, 3476 flow [2024-06-27 23:19:38,275 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} [2024-06-27 23:19:38,275 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-27 23:19:38,275 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 358 transitions, 3476 flow [2024-06-27 23:19:38,275 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) [2024-06-27 23:19:38,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:38,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:19:38,276 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)] === [2024-06-27 23:19:38,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 632838355, now seen corresponding path program 5 times [2024-06-27 23:19:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328077835] [2024-06-27 23:19:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:39,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328077835] [2024-06-27 23:19:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328077835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:39,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:39,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364309412] [2024-06-27 23:19:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:39,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:39,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:39,969 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) [2024-06-27 23:19:39,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:39,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:39,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:40,487 INFO L124 PetriNetUnfolderBase]: 694/1236 cut-off events. [2024-06-27 23:19:40,487 INFO L125 PetriNetUnfolderBase]: For 314010/314029 co-relation queries the response was YES. [2024-06-27 23:19:40,499 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. [2024-06-27 23:19:40,503 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 309 selfloop transitions, 19 changer transitions 0/369 dead transitions. [2024-06-27 23:19:40,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 369 transitions, 4184 flow [2024-06-27 23:19:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:19:40,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-27 23:19:40,504 INFO L175 Difference]: Start difference. First operand has 387 places, 358 transitions, 3476 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:19:40,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 369 transitions, 4184 flow [2024-06-27 23:19:41,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 369 transitions, 4109 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:41,304 INFO L231 Difference]: Finished difference. Result has 388 places, 359 transitions, 3469 flow [2024-06-27 23:19:41,305 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} [2024-06-27 23:19:41,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-27 23:19:41,305 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 359 transitions, 3469 flow [2024-06-27 23:19:41,305 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) [2024-06-27 23:19:41,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:41,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:41,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:19:41,306 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)] === [2024-06-27 23:19:41,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 632828435, now seen corresponding path program 20 times [2024-06-27 23:19:41,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:41,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091480279] [2024-06-27 23:19:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:41,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:43,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:43,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091480279] [2024-06-27 23:19:43,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091480279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:43,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:43,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:43,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488266648] [2024-06-27 23:19:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:43,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:43,097 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) [2024-06-27 23:19:43,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:43,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:43,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:43,854 INFO L124 PetriNetUnfolderBase]: 760/1313 cut-off events. [2024-06-27 23:19:43,855 INFO L125 PetriNetUnfolderBase]: For 295771/295771 co-relation queries the response was YES. [2024-06-27 23:19:43,867 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. [2024-06-27 23:19:43,871 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 338 selfloop transitions, 31 changer transitions 0/371 dead transitions. [2024-06-27 23:19:43,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 371 transitions, 4251 flow [2024-06-27 23:19:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:19:43,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 23:19:43,872 INFO L175 Difference]: Start difference. First operand has 388 places, 359 transitions, 3469 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:19:43,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 371 transitions, 4251 flow [2024-06-27 23:19:44,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 371 transitions, 4166 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:44,743 INFO L231 Difference]: Finished difference. Result has 390 places, 359 transitions, 3451 flow [2024-06-27 23:19:44,743 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} [2024-06-27 23:19:44,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-27 23:19:44,743 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 359 transitions, 3451 flow [2024-06-27 23:19:44,743 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) [2024-06-27 23:19:44,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:44,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:44,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:19:44,744 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)] === [2024-06-27 23:19:44,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash -735497351, now seen corresponding path program 7 times [2024-06-27 23:19:44,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:44,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659199671] [2024-06-27 23:19:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:44,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659199671] [2024-06-27 23:19:45,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659199671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:45,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:45,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403423010] [2024-06-27 23:19:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:45,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:46,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:46,028 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) [2024-06-27 23:19:46,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:46,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:46,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:46,581 INFO L124 PetriNetUnfolderBase]: 772/1334 cut-off events. [2024-06-27 23:19:46,581 INFO L125 PetriNetUnfolderBase]: For 300303/300303 co-relation queries the response was YES. [2024-06-27 23:19:46,595 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. [2024-06-27 23:19:46,600 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 330 selfloop transitions, 54 changer transitions 0/386 dead transitions. [2024-06-27 23:19:46,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 386 transitions, 4639 flow [2024-06-27 23:19:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:19:46,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 23:19:46,601 INFO L175 Difference]: Start difference. First operand has 390 places, 359 transitions, 3451 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:19:46,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 386 transitions, 4639 flow [2024-06-27 23:19:47,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 386 transitions, 4578 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:47,484 INFO L231 Difference]: Finished difference. Result has 394 places, 366 transitions, 3634 flow [2024-06-27 23:19:47,485 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} [2024-06-27 23:19:47,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-27 23:19:47,485 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 366 transitions, 3634 flow [2024-06-27 23:19:47,485 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) [2024-06-27 23:19:47,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:47,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:47,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:19:47,485 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)] === [2024-06-27 23:19:47,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:47,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2089082614, now seen corresponding path program 16 times [2024-06-27 23:19:47,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:47,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018022442] [2024-06-27 23:19:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:47,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018022442] [2024-06-27 23:19:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018022442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:48,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:48,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571000587] [2024-06-27 23:19:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:48,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:48,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:48,925 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) [2024-06-27 23:19:48,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:48,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:48,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:49,537 INFO L124 PetriNetUnfolderBase]: 780/1346 cut-off events. [2024-06-27 23:19:49,537 INFO L125 PetriNetUnfolderBase]: For 313767/313767 co-relation queries the response was YES. [2024-06-27 23:19:49,547 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. [2024-06-27 23:19:49,551 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 339 selfloop transitions, 50 changer transitions 0/391 dead transitions. [2024-06-27 23:19:49,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 391 transitions, 4774 flow [2024-06-27 23:19:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:19:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:19:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:19:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 23:19:49,552 INFO L175 Difference]: Start difference. First operand has 394 places, 366 transitions, 3634 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:19:49,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 391 transitions, 4774 flow [2024-06-27 23:19:50,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 391 transitions, 4673 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:50,468 INFO L231 Difference]: Finished difference. Result has 400 places, 370 transitions, 3688 flow [2024-06-27 23:19:50,468 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} [2024-06-27 23:19:50,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-27 23:19:50,468 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 370 transitions, 3688 flow [2024-06-27 23:19:50,468 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) [2024-06-27 23:19:50,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:50,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:50,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:19:50,469 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)] === [2024-06-27 23:19:50,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2092480059, now seen corresponding path program 8 times [2024-06-27 23:19:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560437785] [2024-06-27 23:19:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560437785] [2024-06-27 23:19:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560437785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:52,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:52,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:52,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111204367] [2024-06-27 23:19:52,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:52,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:52,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:52,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:52,103 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) [2024-06-27 23:19:52,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:52,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:52,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:52,595 INFO L124 PetriNetUnfolderBase]: 783/1351 cut-off events. [2024-06-27 23:19:52,595 INFO L125 PetriNetUnfolderBase]: For 313670/313670 co-relation queries the response was YES. [2024-06-27 23:19:52,609 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. [2024-06-27 23:19:52,613 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 328 selfloop transitions, 63 changer transitions 0/393 dead transitions. [2024-06-27 23:19:52,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 393 transitions, 4826 flow [2024-06-27 23:19:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:19:52,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:19:52,615 INFO L175 Difference]: Start difference. First operand has 400 places, 370 transitions, 3688 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:19:52,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 393 transitions, 4826 flow [2024-06-27 23:19:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 393 transitions, 4747 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:53,618 INFO L231 Difference]: Finished difference. Result has 403 places, 372 transitions, 3784 flow [2024-06-27 23:19:53,618 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} [2024-06-27 23:19:53,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-27 23:19:53,619 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 372 transitions, 3784 flow [2024-06-27 23:19:53,619 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) [2024-06-27 23:19:53,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:53,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:53,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:19:53,619 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)] === [2024-06-27 23:19:53,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2107583259, now seen corresponding path program 9 times [2024-06-27 23:19:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085162136] [2024-06-27 23:19:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:53,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:55,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085162136] [2024-06-27 23:19:55,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085162136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:55,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:55,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:55,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358902979] [2024-06-27 23:19:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:55,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:55,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:55,482 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) [2024-06-27 23:19:55,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:55,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:55,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:56,043 INFO L124 PetriNetUnfolderBase]: 781/1348 cut-off events. [2024-06-27 23:19:56,043 INFO L125 PetriNetUnfolderBase]: For 309490/309490 co-relation queries the response was YES. [2024-06-27 23:19:56,057 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. [2024-06-27 23:19:56,061 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 336 selfloop transitions, 51 changer transitions 0/389 dead transitions. [2024-06-27 23:19:56,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 389 transitions, 4602 flow [2024-06-27 23:19:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:19:56,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:19:56,063 INFO L175 Difference]: Start difference. First operand has 403 places, 372 transitions, 3784 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:19:56,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 389 transitions, 4602 flow [2024-06-27 23:19:57,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 389 transitions, 4447 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:57,173 INFO L231 Difference]: Finished difference. Result has 404 places, 372 transitions, 3742 flow [2024-06-27 23:19:57,173 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} [2024-06-27 23:19:57,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-27 23:19:57,173 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 372 transitions, 3742 flow [2024-06-27 23:19:57,173 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) [2024-06-27 23:19:57,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:57,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:57,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:19:57,174 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)] === [2024-06-27 23:19:57,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash 637610132, now seen corresponding path program 17 times [2024-06-27 23:19:57,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:57,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74437652] [2024-06-27 23:19:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:57,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:58,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74437652] [2024-06-27 23:19:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74437652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:58,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:58,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076537745] [2024-06-27 23:19:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:58,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:58,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:58,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:19:58,940 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) [2024-06-27 23:19:58,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:58,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:19:58,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:59,512 INFO L124 PetriNetUnfolderBase]: 784/1353 cut-off events. [2024-06-27 23:19:59,512 INFO L125 PetriNetUnfolderBase]: For 309486/309486 co-relation queries the response was YES. [2024-06-27 23:19:59,526 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. [2024-06-27 23:19:59,530 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 351 selfloop transitions, 39 changer transitions 0/392 dead transitions. [2024-06-27 23:19:59,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 392 transitions, 4592 flow [2024-06-27 23:19:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:19:59,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:19:59,531 INFO L175 Difference]: Start difference. First operand has 404 places, 372 transitions, 3742 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:19:59,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 392 transitions, 4592 flow [2024-06-27 23:20:00,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 392 transitions, 4473 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:20:00,719 INFO L231 Difference]: Finished difference. Result has 405 places, 374 transitions, 3732 flow [2024-06-27 23:20:00,719 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} [2024-06-27 23:20:00,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-27 23:20:00,719 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 374 transitions, 3732 flow [2024-06-27 23:20:00,719 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) [2024-06-27 23:20:00,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:00,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:00,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:20:00,720 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)] === [2024-06-27 23:20:00,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash 641597042, now seen corresponding path program 18 times [2024-06-27 23:20:00,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:00,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761726344] [2024-06-27 23:20:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:02,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761726344] [2024-06-27 23:20:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761726344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:02,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:02,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924096273] [2024-06-27 23:20:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:02,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:02,446 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) [2024-06-27 23:20:02,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:02,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:02,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:03,131 INFO L124 PetriNetUnfolderBase]: 792/1366 cut-off events. [2024-06-27 23:20:03,131 INFO L125 PetriNetUnfolderBase]: For 318401/318401 co-relation queries the response was YES. [2024-06-27 23:20:03,145 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. [2024-06-27 23:20:03,149 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 142 changer transitions 0/399 dead transitions. [2024-06-27 23:20:03,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 399 transitions, 5184 flow [2024-06-27 23:20:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:20:03,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:20:03,151 INFO L175 Difference]: Start difference. First operand has 405 places, 374 transitions, 3732 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:20:03,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 399 transitions, 5184 flow [2024-06-27 23:20:04,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 399 transitions, 5095 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:04,205 INFO L231 Difference]: Finished difference. Result has 407 places, 380 transitions, 4014 flow [2024-06-27 23:20:04,205 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} [2024-06-27 23:20:04,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-27 23:20:04,206 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 380 transitions, 4014 flow [2024-06-27 23:20:04,206 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) [2024-06-27 23:20:04,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:04,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:20:04,206 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)] === [2024-06-27 23:20:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 68715957, now seen corresponding path program 10 times [2024-06-27 23:20:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973874418] [2024-06-27 23:20:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:05,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973874418] [2024-06-27 23:20:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973874418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:20:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695798954] [2024-06-27 23:20:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:20:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:20:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:20:05,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:05,899 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) [2024-06-27 23:20:05,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:05,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:05,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:06,408 INFO L124 PetriNetUnfolderBase]: 795/1371 cut-off events. [2024-06-27 23:20:06,408 INFO L125 PetriNetUnfolderBase]: For 323737/323737 co-relation queries the response was YES. [2024-06-27 23:20:06,422 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. [2024-06-27 23:20:06,427 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 94 changer transitions 0/397 dead transitions. [2024-06-27 23:20:06,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 397 transitions, 4882 flow [2024-06-27 23:20:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:20:06,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 23:20:06,428 INFO L175 Difference]: Start difference. First operand has 407 places, 380 transitions, 4014 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:20:06,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 397 transitions, 4882 flow [2024-06-27 23:20:07,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 397 transitions, 4753 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:07,542 INFO L231 Difference]: Finished difference. Result has 411 places, 382 transitions, 4127 flow [2024-06-27 23:20:07,542 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} [2024-06-27 23:20:07,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-27 23:20:07,542 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 382 transitions, 4127 flow [2024-06-27 23:20:07,542 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) [2024-06-27 23:20:07,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:07,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:20:07,543 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)] === [2024-06-27 23:20:07,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash 642236882, now seen corresponding path program 19 times [2024-06-27 23:20:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:07,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185588907] [2024-06-27 23:20:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:09,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:09,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185588907] [2024-06-27 23:20:09,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185588907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:09,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:09,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:09,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656352637] [2024-06-27 23:20:09,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:09,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:09,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:09,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:09,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:09,234 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) [2024-06-27 23:20:09,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:09,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:09,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:09,869 INFO L124 PetriNetUnfolderBase]: 793/1368 cut-off events. [2024-06-27 23:20:09,869 INFO L125 PetriNetUnfolderBase]: For 319069/319069 co-relation queries the response was YES. [2024-06-27 23:20:09,884 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. [2024-06-27 23:20:09,889 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 144 changer transitions 0/400 dead transitions. [2024-06-27 23:20:09,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 400 transitions, 5239 flow [2024-06-27 23:20:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:20:09,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 23:20:09,890 INFO L175 Difference]: Start difference. First operand has 411 places, 382 transitions, 4127 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:20:09,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 400 transitions, 5239 flow [2024-06-27 23:20:11,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 400 transitions, 5011 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:11,151 INFO L231 Difference]: Finished difference. Result has 414 places, 382 transitions, 4194 flow [2024-06-27 23:20:11,152 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} [2024-06-27 23:20:11,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-27 23:20:11,152 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 382 transitions, 4194 flow [2024-06-27 23:20:11,152 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) [2024-06-27 23:20:11,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:11,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:11,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:20:11,153 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)] === [2024-06-27 23:20:11,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash 622834509, now seen corresponding path program 21 times [2024-06-27 23:20:11,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234361754] [2024-06-27 23:20:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:11,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:12,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:12,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234361754] [2024-06-27 23:20:12,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234361754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:12,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:12,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:12,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941082573] [2024-06-27 23:20:12,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:12,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:12,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:12,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:12,841 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) [2024-06-27 23:20:12,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:12,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:12,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:13,513 INFO L124 PetriNetUnfolderBase]: 799/1378 cut-off events. [2024-06-27 23:20:13,513 INFO L125 PetriNetUnfolderBase]: For 328527/328527 co-relation queries the response was YES. [2024-06-27 23:20:13,527 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. [2024-06-27 23:20:13,531 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 239 selfloop transitions, 170 changer transitions 0/411 dead transitions. [2024-06-27 23:20:13,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 411 transitions, 5432 flow [2024-06-27 23:20:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:20:13,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:20:13,532 INFO L175 Difference]: Start difference. First operand has 414 places, 382 transitions, 4194 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:20:13,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 411 transitions, 5432 flow [2024-06-27 23:20:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 411 transitions, 5139 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:20:14,634 INFO L231 Difference]: Finished difference. Result has 415 places, 386 transitions, 4306 flow [2024-06-27 23:20:14,635 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} [2024-06-27 23:20:14,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-27 23:20:14,635 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 386 transitions, 4306 flow [2024-06-27 23:20:14,635 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) [2024-06-27 23:20:14,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:14,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:14,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:20:14,636 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)] === [2024-06-27 23:20:14,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1154388514, now seen corresponding path program 20 times [2024-06-27 23:20:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567606826] [2024-06-27 23:20:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567606826] [2024-06-27 23:20:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567606826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:16,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:16,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170207047] [2024-06-27 23:20:16,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:16,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:16,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:16,636 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) [2024-06-27 23:20:16,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:16,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:16,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:17,250 INFO L124 PetriNetUnfolderBase]: 802/1383 cut-off events. [2024-06-27 23:20:17,250 INFO L125 PetriNetUnfolderBase]: For 324392/324392 co-relation queries the response was YES. [2024-06-27 23:20:17,265 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. [2024-06-27 23:20:17,270 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 366 selfloop transitions, 37 changer transitions 0/405 dead transitions. [2024-06-27 23:20:17,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 405 transitions, 5188 flow [2024-06-27 23:20:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:20:17,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:20:17,271 INFO L175 Difference]: Start difference. First operand has 415 places, 386 transitions, 4306 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:20:17,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 405 transitions, 5188 flow [2024-06-27 23:20:18,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 405 transitions, 5048 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:18,729 INFO L231 Difference]: Finished difference. Result has 419 places, 388 transitions, 4279 flow [2024-06-27 23:20:18,730 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} [2024-06-27 23:20:18,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-27 23:20:18,730 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 388 transitions, 4279 flow [2024-06-27 23:20:18,730 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) [2024-06-27 23:20:18,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:18,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:18,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:20:18,731 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)] === [2024-06-27 23:20:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1729210373, now seen corresponding path program 22 times [2024-06-27 23:20:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844731900] [2024-06-27 23:20:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:20,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:20,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844731900] [2024-06-27 23:20:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844731900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:20,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:20,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339735045] [2024-06-27 23:20:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:20,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:20,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:20,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:20,473 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) [2024-06-27 23:20:20,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:20,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:20,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:21,150 INFO L124 PetriNetUnfolderBase]: 818/1409 cut-off events. [2024-06-27 23:20:21,151 INFO L125 PetriNetUnfolderBase]: For 357031/357031 co-relation queries the response was YES. [2024-06-27 23:20:21,166 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. [2024-06-27 23:20:21,171 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 142 changer transitions 0/415 dead transitions. [2024-06-27 23:20:21,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 415 transitions, 5795 flow [2024-06-27 23:20:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:20:21,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 23:20:21,172 INFO L175 Difference]: Start difference. First operand has 419 places, 388 transitions, 4279 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:20:21,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 415 transitions, 5795 flow [2024-06-27 23:20:22,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 415 transitions, 5706 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:22,439 INFO L231 Difference]: Finished difference. Result has 421 places, 392 transitions, 4535 flow [2024-06-27 23:20:22,439 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} [2024-06-27 23:20:22,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-27 23:20:22,439 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 392 transitions, 4535 flow [2024-06-27 23:20:22,439 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) [2024-06-27 23:20:22,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:22,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:22,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:20:22,440 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)] === [2024-06-27 23:20:22,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1296641314, now seen corresponding path program 21 times [2024-06-27 23:20:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:22,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486659647] [2024-06-27 23:20:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:22,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:24,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486659647] [2024-06-27 23:20:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486659647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:24,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:24,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485894232] [2024-06-27 23:20:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:24,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:24,343 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) [2024-06-27 23:20:24,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:24,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:25,186 INFO L124 PetriNetUnfolderBase]: 831/1430 cut-off events. [2024-06-27 23:20:25,187 INFO L125 PetriNetUnfolderBase]: For 372343/372343 co-relation queries the response was YES. [2024-06-27 23:20:25,198 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. [2024-06-27 23:20:25,202 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 134 changer transitions 0/417 dead transitions. [2024-06-27 23:20:25,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 417 transitions, 6325 flow [2024-06-27 23:20:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:20:25,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:20:25,204 INFO L175 Difference]: Start difference. First operand has 421 places, 392 transitions, 4535 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:20:25,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 417 transitions, 6325 flow [2024-06-27 23:20:26,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 417 transitions, 6137 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:26,568 INFO L231 Difference]: Finished difference. Result has 425 places, 398 transitions, 4704 flow [2024-06-27 23:20:26,568 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} [2024-06-27 23:20:26,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-27 23:20:26,568 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 398 transitions, 4704 flow [2024-06-27 23:20:26,568 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) [2024-06-27 23:20:26,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:26,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:20:26,569 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)] === [2024-06-27 23:20:26,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1158107584, now seen corresponding path program 22 times [2024-06-27 23:20:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560172805] [2024-06-27 23:20:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560172805] [2024-06-27 23:20:28,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560172805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:28,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:28,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123954032] [2024-06-27 23:20:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:28,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:28,507 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) [2024-06-27 23:20:28,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:28,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:28,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:29,232 INFO L124 PetriNetUnfolderBase]: 829/1427 cut-off events. [2024-06-27 23:20:29,232 INFO L125 PetriNetUnfolderBase]: For 368464/368464 co-relation queries the response was YES. [2024-06-27 23:20:29,247 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. [2024-06-27 23:20:29,252 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 133 changer transitions 0/416 dead transitions. [2024-06-27 23:20:29,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 416 transitions, 6134 flow [2024-06-27 23:20:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:20:29,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:20:29,254 INFO L175 Difference]: Start difference. First operand has 425 places, 398 transitions, 4704 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:20:29,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 416 transitions, 6134 flow [2024-06-27 23:20:30,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 416 transitions, 5935 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:30,653 INFO L231 Difference]: Finished difference. Result has 430 places, 398 transitions, 4776 flow [2024-06-27 23:20:30,653 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} [2024-06-27 23:20:30,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-27 23:20:30,654 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 398 transitions, 4776 flow [2024-06-27 23:20:30,654 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) [2024-06-27 23:20:30,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:30,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:20:30,654 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)] === [2024-06-27 23:20:30,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash 754408044, now seen corresponding path program 23 times [2024-06-27 23:20:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832549477] [2024-06-27 23:20:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832549477] [2024-06-27 23:20:32,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832549477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:32,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:32,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:32,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121026812] [2024-06-27 23:20:32,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:32,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:32,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:32,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:32,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:32,534 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) [2024-06-27 23:20:32,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:32,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:32,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:33,342 INFO L124 PetriNetUnfolderBase]: 832/1432 cut-off events. [2024-06-27 23:20:33,342 INFO L125 PetriNetUnfolderBase]: For 374086/374086 co-relation queries the response was YES. [2024-06-27 23:20:33,357 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. [2024-06-27 23:20:33,361 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 145 changer transitions 0/417 dead transitions. [2024-06-27 23:20:33,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 417 transitions, 6238 flow [2024-06-27 23:20:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:20:33,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 23:20:33,363 INFO L175 Difference]: Start difference. First operand has 430 places, 398 transitions, 4776 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:20:33,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 417 transitions, 6238 flow [2024-06-27 23:20:34,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 417 transitions, 5956 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:20:34,777 INFO L231 Difference]: Finished difference. Result has 431 places, 400 transitions, 4819 flow [2024-06-27 23:20:34,778 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} [2024-06-27 23:20:34,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-27 23:20:34,778 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 400 transitions, 4819 flow [2024-06-27 23:20:34,778 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) [2024-06-27 23:20:34,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:34,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:34,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:20:34,778 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)] === [2024-06-27 23:20:34,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1302213161, now seen corresponding path program 23 times [2024-06-27 23:20:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247007308] [2024-06-27 23:20:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:34,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:36,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:36,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247007308] [2024-06-27 23:20:36,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247007308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:36,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:36,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276008242] [2024-06-27 23:20:36,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:36,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:36,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:36,397 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) [2024-06-27 23:20:36,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:36,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:36,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:37,067 INFO L124 PetriNetUnfolderBase]: 838/1442 cut-off events. [2024-06-27 23:20:37,068 INFO L125 PetriNetUnfolderBase]: For 389470/389470 co-relation queries the response was YES. [2024-06-27 23:20:37,084 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. [2024-06-27 23:20:37,090 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 150 changer transitions 0/423 dead transitions. [2024-06-27 23:20:37,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 423 transitions, 6325 flow [2024-06-27 23:20:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:20:37,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:20:37,098 INFO L175 Difference]: Start difference. First operand has 431 places, 400 transitions, 4819 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:20:37,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 423 transitions, 6325 flow [2024-06-27 23:20:38,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 423 transitions, 6051 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:38,716 INFO L231 Difference]: Finished difference. Result has 434 places, 402 transitions, 4876 flow [2024-06-27 23:20:38,716 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} [2024-06-27 23:20:38,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-27 23:20:38,716 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 402 transitions, 4876 flow [2024-06-27 23:20:38,716 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) [2024-06-27 23:20:38,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:38,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:38,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:20:38,717 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)] === [2024-06-27 23:20:38,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1299625327, now seen corresponding path program 24 times [2024-06-27 23:20:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:38,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776380250] [2024-06-27 23:20:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:38,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:40,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:40,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776380250] [2024-06-27 23:20:40,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776380250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:40,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:40,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:40,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13983547] [2024-06-27 23:20:40,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:40,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:40,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:40,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:40,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:40,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:40,467 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) [2024-06-27 23:20:40,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:40,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:40,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:41,148 INFO L124 PetriNetUnfolderBase]: 844/1452 cut-off events. [2024-06-27 23:20:41,149 INFO L125 PetriNetUnfolderBase]: For 395513/395513 co-relation queries the response was YES. [2024-06-27 23:20:41,165 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. [2024-06-27 23:20:41,169 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 277 selfloop transitions, 147 changer transitions 0/426 dead transitions. [2024-06-27 23:20:41,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 426 transitions, 6404 flow [2024-06-27 23:20:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:20:41,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 23:20:41,171 INFO L175 Difference]: Start difference. First operand has 434 places, 402 transitions, 4876 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:20:41,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 426 transitions, 6404 flow [2024-06-27 23:20:42,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 426 transitions, 6094 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:42,671 INFO L231 Difference]: Finished difference. Result has 437 places, 404 transitions, 4895 flow [2024-06-27 23:20:42,672 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} [2024-06-27 23:20:42,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-27 23:20:42,672 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 404 transitions, 4895 flow [2024-06-27 23:20:42,672 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) [2024-06-27 23:20:42,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:42,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:20:42,673 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)] === [2024-06-27 23:20:42,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1301998114, now seen corresponding path program 24 times [2024-06-27 23:20:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118665393] [2024-06-27 23:20:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118665393] [2024-06-27 23:20:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118665393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:44,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056306557] [2024-06-27 23:20:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:44,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:44,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:44,579 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) [2024-06-27 23:20:44,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:44,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:44,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:45,322 INFO L124 PetriNetUnfolderBase]: 847/1457 cut-off events. [2024-06-27 23:20:45,322 INFO L125 PetriNetUnfolderBase]: For 390807/390807 co-relation queries the response was YES. [2024-06-27 23:20:45,338 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. [2024-06-27 23:20:45,342 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 141 changer transitions 0/423 dead transitions. [2024-06-27 23:20:45,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 423 transitions, 6377 flow [2024-06-27 23:20:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:20:45,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 23:20:45,344 INFO L175 Difference]: Start difference. First operand has 437 places, 404 transitions, 4895 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:20:45,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 423 transitions, 6377 flow [2024-06-27 23:20:47,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 423 transitions, 6069 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:47,084 INFO L231 Difference]: Finished difference. Result has 439 places, 406 transitions, 4900 flow [2024-06-27 23:20:47,084 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} [2024-06-27 23:20:47,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-27 23:20:47,085 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 406 transitions, 4900 flow [2024-06-27 23:20:47,085 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) [2024-06-27 23:20:47,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:47,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:47,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:20:47,086 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)] === [2024-06-27 23:20:47,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1299827137, now seen corresponding path program 25 times [2024-06-27 23:20:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:47,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384892962] [2024-06-27 23:20:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:48,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384892962] [2024-06-27 23:20:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384892962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:48,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691785905] [2024-06-27 23:20:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:48,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:48,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:48,731 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) [2024-06-27 23:20:48,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:48,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:48,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:49,438 INFO L124 PetriNetUnfolderBase]: 843/1451 cut-off events. [2024-06-27 23:20:49,439 INFO L125 PetriNetUnfolderBase]: For 385458/385458 co-relation queries the response was YES. [2024-06-27 23:20:49,451 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. [2024-06-27 23:20:49,455 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 276 selfloop transitions, 149 changer transitions 0/427 dead transitions. [2024-06-27 23:20:49,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 427 transitions, 6118 flow [2024-06-27 23:20:49,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:20:49,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:20:49,457 INFO L175 Difference]: Start difference. First operand has 439 places, 406 transitions, 4900 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:20:49,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 427 transitions, 6118 flow [2024-06-27 23:20:51,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 427 transitions, 5801 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:51,106 INFO L231 Difference]: Finished difference. Result has 441 places, 406 transitions, 4886 flow [2024-06-27 23:20:51,107 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} [2024-06-27 23:20:51,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-27 23:20:51,107 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 406 transitions, 4886 flow [2024-06-27 23:20:51,107 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) [2024-06-27 23:20:51,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:51,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:20:51,108 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)] === [2024-06-27 23:20:51,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1299625110, now seen corresponding path program 25 times [2024-06-27 23:20:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:51,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478367305] [2024-06-27 23:20:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:52,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:52,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478367305] [2024-06-27 23:20:52,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478367305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:52,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:52,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:52,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074398637] [2024-06-27 23:20:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:52,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:52,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:53,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:20:53,059 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) [2024-06-27 23:20:53,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:53,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:20:53,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:53,812 INFO L124 PetriNetUnfolderBase]: 841/1448 cut-off events. [2024-06-27 23:20:53,812 INFO L125 PetriNetUnfolderBase]: For 369841/369841 co-relation queries the response was YES. [2024-06-27 23:20:53,828 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. [2024-06-27 23:20:53,832 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 140 changer transitions 0/422 dead transitions. [2024-06-27 23:20:53,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 422 transitions, 6056 flow [2024-06-27 23:20:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:20:53,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 23:20:53,834 INFO L175 Difference]: Start difference. First operand has 441 places, 406 transitions, 4886 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:20:53,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 422 transitions, 6056 flow [2024-06-27 23:20:55,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 422 transitions, 5728 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:20:55,461 INFO L231 Difference]: Finished difference. Result has 441 places, 406 transitions, 4843 flow [2024-06-27 23:20:55,462 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} [2024-06-27 23:20:55,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-27 23:20:55,462 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 406 transitions, 4843 flow [2024-06-27 23:20:55,462 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) [2024-06-27 23:20:55,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:55,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:55,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:20:55,462 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)] === [2024-06-27 23:20:55,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1299619375, now seen corresponding path program 11 times [2024-06-27 23:20:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493405178] [2024-06-27 23:20:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:56,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:56,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493405178] [2024-06-27 23:20:56,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493405178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:56,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:56,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045347571] [2024-06-27 23:20:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:56,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:57,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:57,081 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) [2024-06-27 23:20:57,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:57,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:57,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:57,693 INFO L124 PetriNetUnfolderBase]: 844/1453 cut-off events. [2024-06-27 23:20:57,693 INFO L125 PetriNetUnfolderBase]: For 374634/374634 co-relation queries the response was YES. [2024-06-27 23:20:57,710 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. [2024-06-27 23:20:57,714 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 330 selfloop transitions, 89 changer transitions 0/421 dead transitions. [2024-06-27 23:20:57,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 421 transitions, 5753 flow [2024-06-27 23:20:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:20:57,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 23:20:57,716 INFO L175 Difference]: Start difference. First operand has 441 places, 406 transitions, 4843 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:20:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 421 transitions, 5753 flow [2024-06-27 23:20:59,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 421 transitions, 5434 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:20:59,391 INFO L231 Difference]: Finished difference. Result has 440 places, 408 transitions, 4755 flow [2024-06-27 23:20:59,392 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} [2024-06-27 23:20:59,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-27 23:20:59,392 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 4755 flow [2024-06-27 23:20:59,392 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) [2024-06-27 23:20:59,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:59,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:59,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:20:59,393 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)] === [2024-06-27 23:20:59,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -518231408, now seen corresponding path program 26 times [2024-06-27 23:20:59,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:59,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644526451] [2024-06-27 23:20:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:59,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:01,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:01,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644526451] [2024-06-27 23:21:01,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644526451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:01,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:01,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111417677] [2024-06-27 23:21:01,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:01,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:01,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:01,568 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) [2024-06-27 23:21:01,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:01,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:02,252 INFO L124 PetriNetUnfolderBase]: 842/1450 cut-off events. [2024-06-27 23:21:02,253 INFO L125 PetriNetUnfolderBase]: For 368419/368419 co-relation queries the response was YES. [2024-06-27 23:21:02,269 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. [2024-06-27 23:21:02,274 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 386 selfloop transitions, 36 changer transitions 0/424 dead transitions. [2024-06-27 23:21:02,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 424 transitions, 5643 flow [2024-06-27 23:21:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:21:02,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:21:02,275 INFO L175 Difference]: Start difference. First operand has 440 places, 408 transitions, 4755 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:21:02,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 424 transitions, 5643 flow [2024-06-27 23:21:03,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 424 transitions, 5432 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:03,681 INFO L231 Difference]: Finished difference. Result has 443 places, 408 transitions, 4621 flow [2024-06-27 23:21:03,681 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} [2024-06-27 23:21:03,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-27 23:21:03,682 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 408 transitions, 4621 flow [2024-06-27 23:21:03,682 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) [2024-06-27 23:21:03,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:03,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:03,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:21:03,683 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)] === [2024-06-27 23:21:03,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash -514512338, now seen corresponding path program 27 times [2024-06-27 23:21:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022809921] [2024-06-27 23:21:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:03,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:05,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022809921] [2024-06-27 23:21:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022809921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:05,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334879211] [2024-06-27 23:21:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:05,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:05,829 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) [2024-06-27 23:21:05,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:05,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:06,639 INFO L124 PetriNetUnfolderBase]: 850/1463 cut-off events. [2024-06-27 23:21:06,639 INFO L125 PetriNetUnfolderBase]: For 379193/379193 co-relation queries the response was YES. [2024-06-27 23:21:06,656 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. [2024-06-27 23:21:06,661 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 138 changer transitions 0/429 dead transitions. [2024-06-27 23:21:06,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 429 transitions, 6167 flow [2024-06-27 23:21:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:21:06,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:21:06,663 INFO L175 Difference]: Start difference. First operand has 443 places, 408 transitions, 4621 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:21:06,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 429 transitions, 6167 flow [2024-06-27 23:21:08,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 429 transitions, 6062 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:08,268 INFO L231 Difference]: Finished difference. Result has 444 places, 412 transitions, 4857 flow [2024-06-27 23:21:08,268 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} [2024-06-27 23:21:08,268 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-27 23:21:08,268 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 412 transitions, 4857 flow [2024-06-27 23:21:08,268 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) [2024-06-27 23:21:08,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:08,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:21:08,269 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)] === [2024-06-27 23:21:08,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash -514506541, now seen corresponding path program 26 times [2024-06-27 23:21:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:08,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97566383] [2024-06-27 23:21:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:10,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:10,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97566383] [2024-06-27 23:21:10,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97566383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:10,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:10,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261345707] [2024-06-27 23:21:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:10,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:10,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:10,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:10,161 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) [2024-06-27 23:21:10,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:10,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:10,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:10,873 INFO L124 PetriNetUnfolderBase]: 856/1473 cut-off events. [2024-06-27 23:21:10,874 INFO L125 PetriNetUnfolderBase]: For 395688/395688 co-relation queries the response was YES. [2024-06-27 23:21:10,890 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. [2024-06-27 23:21:10,895 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 143 changer transitions 0/436 dead transitions. [2024-06-27 23:21:10,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 436 transitions, 6431 flow [2024-06-27 23:21:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:21:10,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 23:21:10,896 INFO L175 Difference]: Start difference. First operand has 444 places, 412 transitions, 4857 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:21:10,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 436 transitions, 6431 flow [2024-06-27 23:21:12,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 436 transitions, 5895 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:12,575 INFO L231 Difference]: Finished difference. Result has 445 places, 414 transitions, 4642 flow [2024-06-27 23:21:12,575 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} [2024-06-27 23:21:12,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 414 predicate places. [2024-06-27 23:21:12,576 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 414 transitions, 4642 flow [2024-06-27 23:21:12,576 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) [2024-06-27 23:21:12,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:12,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:21:12,576 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)] === [2024-06-27 23:21:12,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -514506758, now seen corresponding path program 28 times [2024-06-27 23:21:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293709352] [2024-06-27 23:21:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293709352] [2024-06-27 23:21:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293709352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:14,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:14,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:14,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468361057] [2024-06-27 23:21:14,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:14,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:14,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:14,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:14,686 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) [2024-06-27 23:21:14,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:14,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:14,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:15,514 INFO L124 PetriNetUnfolderBase]: 854/1470 cut-off events. [2024-06-27 23:21:15,515 INFO L125 PetriNetUnfolderBase]: For 378413/378413 co-relation queries the response was YES. [2024-06-27 23:21:15,530 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. [2024-06-27 23:21:15,534 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 139 changer transitions 0/430 dead transitions. [2024-06-27 23:21:15,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 430 transitions, 5838 flow [2024-06-27 23:21:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:21:15,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 23:21:15,536 INFO L175 Difference]: Start difference. First operand has 445 places, 414 transitions, 4642 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:21:15,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 430 transitions, 5838 flow [2024-06-27 23:21:17,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 430 transitions, 5308 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:17,160 INFO L231 Difference]: Finished difference. Result has 446 places, 414 transitions, 4395 flow [2024-06-27 23:21:17,160 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} [2024-06-27 23:21:17,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-27 23:21:17,160 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 414 transitions, 4395 flow [2024-06-27 23:21:17,160 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) [2024-06-27 23:21:17,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:17,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:17,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:21:17,161 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)] === [2024-06-27 23:21:17,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:17,161 INFO L85 PathProgramCache]: Analyzing trace with hash -370406761, now seen corresponding path program 27 times [2024-06-27 23:21:17,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:17,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622393790] [2024-06-27 23:21:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:17,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:18,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:18,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622393790] [2024-06-27 23:21:18,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622393790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:18,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:18,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115704101] [2024-06-27 23:21:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:19,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:19,011 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) [2024-06-27 23:21:19,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:19,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:19,889 INFO L124 PetriNetUnfolderBase]: 870/1496 cut-off events. [2024-06-27 23:21:19,890 INFO L125 PetriNetUnfolderBase]: For 415990/415990 co-relation queries the response was YES. [2024-06-27 23:21:19,903 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. [2024-06-27 23:21:19,907 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 144 changer transitions 0/440 dead transitions. [2024-06-27 23:21:19,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 440 transitions, 6301 flow [2024-06-27 23:21:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:21:19,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 23:21:19,908 INFO L175 Difference]: Start difference. First operand has 446 places, 414 transitions, 4395 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:21:19,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 440 transitions, 6301 flow [2024-06-27 23:21:21,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 440 transitions, 6018 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:21,647 INFO L231 Difference]: Finished difference. Result has 447 places, 418 transitions, 4453 flow [2024-06-27 23:21:21,647 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} [2024-06-27 23:21:21,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-27 23:21:21,647 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 418 transitions, 4453 flow [2024-06-27 23:21:21,647 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) [2024-06-27 23:21:21,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:21,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:21,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:21:21,648 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)] === [2024-06-27 23:21:21,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash -370414418, now seen corresponding path program 29 times [2024-06-27 23:21:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768632129] [2024-06-27 23:21:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768632129] [2024-06-27 23:21:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768632129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:23,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:23,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75565025] [2024-06-27 23:21:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:23,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:23,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:23,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:23,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:23,828 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) [2024-06-27 23:21:23,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:23,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:23,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:24,628 INFO L124 PetriNetUnfolderBase]: 878/1509 cut-off events. [2024-06-27 23:21:24,629 INFO L125 PetriNetUnfolderBase]: For 421746/421746 co-relation queries the response was YES. [2024-06-27 23:21:24,645 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. [2024-06-27 23:21:24,650 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 142 changer transitions 0/438 dead transitions. [2024-06-27 23:21:24,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 438 transitions, 6017 flow [2024-06-27 23:21:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:21:24,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:21:24,652 INFO L175 Difference]: Start difference. First operand has 447 places, 418 transitions, 4453 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:21:24,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 438 transitions, 6017 flow [2024-06-27 23:21:26,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 438 transitions, 5738 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:26,274 INFO L231 Difference]: Finished difference. Result has 451 places, 422 transitions, 4511 flow [2024-06-27 23:21:26,277 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} [2024-06-27 23:21:26,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-27 23:21:26,280 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 422 transitions, 4511 flow [2024-06-27 23:21:26,280 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) [2024-06-27 23:21:26,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:26,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:26,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:21:26,280 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)] === [2024-06-27 23:21:26,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash 413927552, now seen corresponding path program 30 times [2024-06-27 23:21:26,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375634669] [2024-06-27 23:21:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:28,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:28,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375634669] [2024-06-27 23:21:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375634669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:28,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613793688] [2024-06-27 23:21:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:28,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:28,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:28,579 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) [2024-06-27 23:21:28,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:28,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:28,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:29,385 INFO L124 PetriNetUnfolderBase]: 881/1514 cut-off events. [2024-06-27 23:21:29,385 INFO L125 PetriNetUnfolderBase]: For 427116/427116 co-relation queries the response was YES. [2024-06-27 23:21:29,403 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. [2024-06-27 23:21:29,408 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 141 changer transitions 0/440 dead transitions. [2024-06-27 23:21:29,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 440 transitions, 6063 flow [2024-06-27 23:21:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:21:29,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:21:29,424 INFO L175 Difference]: Start difference. First operand has 451 places, 422 transitions, 4511 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:21:29,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 440 transitions, 6063 flow [2024-06-27 23:21:31,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 440 transitions, 5793 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:31,227 INFO L231 Difference]: Finished difference. Result has 455 places, 424 transitions, 4556 flow [2024-06-27 23:21:31,228 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} [2024-06-27 23:21:31,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-27 23:21:31,228 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 424 transitions, 4556 flow [2024-06-27 23:21:31,228 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) [2024-06-27 23:21:31,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:31,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:31,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:21:31,229 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)] === [2024-06-27 23:21:31,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash -370621808, now seen corresponding path program 31 times [2024-06-27 23:21:31,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:31,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120344903] [2024-06-27 23:21:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:31,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120344903] [2024-06-27 23:21:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120344903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410952199] [2024-06-27 23:21:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:33,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:33,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:33,367 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) [2024-06-27 23:21:33,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:33,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:33,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:34,178 INFO L124 PetriNetUnfolderBase]: 879/1511 cut-off events. [2024-06-27 23:21:34,178 INFO L125 PetriNetUnfolderBase]: For 421133/421133 co-relation queries the response was YES. [2024-06-27 23:21:34,192 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. [2024-06-27 23:21:34,196 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 142 changer transitions 0/439 dead transitions. [2024-06-27 23:21:34,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 439 transitions, 5774 flow [2024-06-27 23:21:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:21:34,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:21:34,198 INFO L175 Difference]: Start difference. First operand has 455 places, 424 transitions, 4556 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:21:34,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 439 transitions, 5774 flow [2024-06-27 23:21:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 439 transitions, 5455 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:35,700 INFO L231 Difference]: Finished difference. Result has 457 places, 424 transitions, 4526 flow [2024-06-27 23:21:35,700 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} [2024-06-27 23:21:35,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-27 23:21:35,700 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 424 transitions, 4526 flow [2024-06-27 23:21:35,700 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) [2024-06-27 23:21:35,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:35,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:35,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:21:35,701 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)] === [2024-06-27 23:21:35,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -370414201, now seen corresponding path program 28 times [2024-06-27 23:21:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307163808] [2024-06-27 23:21:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:35,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:37,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:37,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307163808] [2024-06-27 23:21:37,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307163808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:37,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:37,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001280038] [2024-06-27 23:21:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:37,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:37,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:37,727 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) [2024-06-27 23:21:37,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:37,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:37,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:38,536 INFO L124 PetriNetUnfolderBase]: 885/1521 cut-off events. [2024-06-27 23:21:38,537 INFO L125 PetriNetUnfolderBase]: For 438548/438548 co-relation queries the response was YES. [2024-06-27 23:21:38,554 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. [2024-06-27 23:21:38,560 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 144 changer transitions 0/449 dead transitions. [2024-06-27 23:21:38,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 449 transitions, 6456 flow [2024-06-27 23:21:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:21:38,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 23:21:38,561 INFO L175 Difference]: Start difference. First operand has 457 places, 424 transitions, 4526 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:21:38,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 449 transitions, 6456 flow [2024-06-27 23:21:40,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 449 transitions, 6167 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:40,185 INFO L231 Difference]: Finished difference. Result has 458 places, 426 transitions, 4552 flow [2024-06-27 23:21:40,185 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} [2024-06-27 23:21:40,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 427 predicate places. [2024-06-27 23:21:40,186 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 426 transitions, 4552 flow [2024-06-27 23:21:40,186 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) [2024-06-27 23:21:40,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:40,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:21:40,186 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)] === [2024-06-27 23:21:40,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash -370616011, now seen corresponding path program 29 times [2024-06-27 23:21:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144155806] [2024-06-27 23:21:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:40,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:41,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144155806] [2024-06-27 23:21:41,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144155806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:41,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:41,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:41,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584961864] [2024-06-27 23:21:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:41,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:41,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:41,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:42,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:42,147 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) [2024-06-27 23:21:42,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:42,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:42,938 INFO L124 PetriNetUnfolderBase]: 881/1515 cut-off events. [2024-06-27 23:21:42,938 INFO L125 PetriNetUnfolderBase]: For 420520/420520 co-relation queries the response was YES. [2024-06-27 23:21:42,956 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. [2024-06-27 23:21:42,960 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 143 changer transitions 0/448 dead transitions. [2024-06-27 23:21:42,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 448 transitions, 6152 flow [2024-06-27 23:21:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:21:42,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 23:21:42,962 INFO L175 Difference]: Start difference. First operand has 458 places, 426 transitions, 4552 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:21:42,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 448 transitions, 6152 flow [2024-06-27 23:21:44,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 448 transitions, 5855 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:44,552 INFO L231 Difference]: Finished difference. Result has 461 places, 426 transitions, 4546 flow [2024-06-27 23:21:44,552 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} [2024-06-27 23:21:44,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-27 23:21:44,552 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 426 transitions, 4546 flow [2024-06-27 23:21:44,552 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) [2024-06-27 23:21:44,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:44,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:44,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:21:44,553 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)] === [2024-06-27 23:21:44,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 344485109, now seen corresponding path program 30 times [2024-06-27 23:21:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094729234] [2024-06-27 23:21:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:44,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:46,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094729234] [2024-06-27 23:21:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094729234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:46,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:46,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756261675] [2024-06-27 23:21:46,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:46,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:46,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:46,363 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) [2024-06-27 23:21:46,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:46,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:46,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:47,210 INFO L124 PetriNetUnfolderBase]: 907/1557 cut-off events. [2024-06-27 23:21:47,210 INFO L125 PetriNetUnfolderBase]: For 474689/474689 co-relation queries the response was YES. [2024-06-27 23:21:47,226 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. [2024-06-27 23:21:47,230 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 293 selfloop transitions, 159 changer transitions 0/454 dead transitions. [2024-06-27 23:21:47,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 454 transitions, 6868 flow [2024-06-27 23:21:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:21:47,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 23:21:47,232 INFO L175 Difference]: Start difference. First operand has 461 places, 426 transitions, 4546 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:21:47,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 454 transitions, 6868 flow [2024-06-27 23:21:48,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 454 transitions, 6549 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:21:48,961 INFO L231 Difference]: Finished difference. Result has 461 places, 432 transitions, 4640 flow [2024-06-27 23:21:48,962 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} [2024-06-27 23:21:48,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-27 23:21:48,962 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 432 transitions, 4640 flow [2024-06-27 23:21:48,962 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) [2024-06-27 23:21:48,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:48,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:48,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:21:48,963 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)] === [2024-06-27 23:21:48,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash 689231763, now seen corresponding path program 6 times [2024-06-27 23:21:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:48,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959582486] [2024-06-27 23:21:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959582486] [2024-06-27 23:21:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959582486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818825174] [2024-06-27 23:21:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:51,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:51,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:51,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:21:51,149 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) [2024-06-27 23:21:51,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:51,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:21:51,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:51,790 INFO L124 PetriNetUnfolderBase]: 822/1450 cut-off events. [2024-06-27 23:21:51,790 INFO L125 PetriNetUnfolderBase]: For 465223/465250 co-relation queries the response was YES. [2024-06-27 23:21:51,807 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. [2024-06-27 23:21:51,812 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 372 selfloop transitions, 34 changer transitions 0/447 dead transitions. [2024-06-27 23:21:51,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 447 transitions, 5500 flow [2024-06-27 23:21:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:21:51,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 23:21:51,813 INFO L175 Difference]: Start difference. First operand has 461 places, 432 transitions, 4640 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:21:51,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 447 transitions, 5500 flow [2024-06-27 23:21:53,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 447 transitions, 5220 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:53,356 INFO L231 Difference]: Finished difference. Result has 465 places, 432 transitions, 4432 flow [2024-06-27 23:21:53,356 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} [2024-06-27 23:21:53,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 434 predicate places. [2024-06-27 23:21:53,356 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 432 transitions, 4432 flow [2024-06-27 23:21:53,356 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) [2024-06-27 23:21:53,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:53,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:53,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:21:53,357 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)] === [2024-06-27 23:21:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 615485739, now seen corresponding path program 31 times [2024-06-27 23:21:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263043553] [2024-06-27 23:21:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:55,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263043553] [2024-06-27 23:21:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263043553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:55,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:55,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:55,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288345444] [2024-06-27 23:21:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:55,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:55,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:55,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:55,240 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) [2024-06-27 23:21:55,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:55,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:55,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:56,029 INFO L124 PetriNetUnfolderBase]: 900/1547 cut-off events. [2024-06-27 23:21:56,029 INFO L125 PetriNetUnfolderBase]: For 436525/436525 co-relation queries the response was YES. [2024-06-27 23:21:56,046 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. [2024-06-27 23:21:56,051 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 171 changer transitions 0/451 dead transitions. [2024-06-27 23:21:56,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 451 transitions, 6030 flow [2024-06-27 23:21:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:21:56,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 23:21:56,052 INFO L175 Difference]: Start difference. First operand has 465 places, 432 transitions, 4432 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:21:56,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 451 transitions, 6030 flow [2024-06-27 23:21:57,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 451 transitions, 5898 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:57,630 INFO L231 Difference]: Finished difference. Result has 467 places, 432 transitions, 4647 flow [2024-06-27 23:21:57,630 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} [2024-06-27 23:21:57,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-27 23:21:57,630 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 432 transitions, 4647 flow [2024-06-27 23:21:57,631 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) [2024-06-27 23:21:57,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:57,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:21:57,631 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)] === [2024-06-27 23:21:57,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash 681812533, now seen corresponding path program 32 times [2024-06-27 23:21:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:57,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031667845] [2024-06-27 23:21:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031667845] [2024-06-27 23:21:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031667845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501347542] [2024-06-27 23:21:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:59,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:21:59,428 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) [2024-06-27 23:21:59,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:59,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:21:59,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:00,170 INFO L124 PetriNetUnfolderBase]: 906/1556 cut-off events. [2024-06-27 23:22:00,170 INFO L125 PetriNetUnfolderBase]: For 442334/442334 co-relation queries the response was YES. [2024-06-27 23:22:00,185 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. [2024-06-27 23:22:00,189 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 155 changer transitions 0/455 dead transitions. [2024-06-27 23:22:00,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 455 transitions, 6615 flow [2024-06-27 23:22:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:22:00,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 23:22:00,190 INFO L175 Difference]: Start difference. First operand has 467 places, 432 transitions, 4647 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:22:00,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 455 transitions, 6615 flow [2024-06-27 23:22:01,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 455 transitions, 6278 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:01,788 INFO L231 Difference]: Finished difference. Result has 467 places, 434 transitions, 4655 flow [2024-06-27 23:22:01,789 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} [2024-06-27 23:22:01,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-27 23:22:01,789 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 434 transitions, 4655 flow [2024-06-27 23:22:01,789 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) [2024-06-27 23:22:01,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:01,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:01,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:22:01,790 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)] === [2024-06-27 23:22:01,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 681804876, now seen corresponding path program 32 times [2024-06-27 23:22:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:01,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153669948] [2024-06-27 23:22:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:03,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153669948] [2024-06-27 23:22:03,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153669948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:03,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079121434] [2024-06-27 23:22:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:03,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:03,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:03,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:03,908 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) [2024-06-27 23:22:03,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:03,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:03,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:04,751 INFO L124 PetriNetUnfolderBase]: 914/1569 cut-off events. [2024-06-27 23:22:04,752 INFO L125 PetriNetUnfolderBase]: For 448123/448123 co-relation queries the response was YES. [2024-06-27 23:22:04,771 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. [2024-06-27 23:22:04,776 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 151 changer transitions 0/453 dead transitions. [2024-06-27 23:22:04,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 453 transitions, 6285 flow [2024-06-27 23:22:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:22:04,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:22:04,778 INFO L175 Difference]: Start difference. First operand has 467 places, 434 transitions, 4655 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:22:04,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 453 transitions, 6285 flow [2024-06-27 23:22:06,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 453 transitions, 5855 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:06,408 INFO L231 Difference]: Finished difference. Result has 467 places, 438 transitions, 4584 flow [2024-06-27 23:22:06,409 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} [2024-06-27 23:22:06,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-27 23:22:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 438 transitions, 4584 flow [2024-06-27 23:22:06,409 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) [2024-06-27 23:22:06,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:06,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:06,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:22:06,410 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)] === [2024-06-27 23:22:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 615218612, now seen corresponding path program 33 times [2024-06-27 23:22:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406265081] [2024-06-27 23:22:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:08,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406265081] [2024-06-27 23:22:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406265081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:08,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:08,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651169382] [2024-06-27 23:22:08,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:08,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:08,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:08,558 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) [2024-06-27 23:22:08,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:08,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:08,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:09,338 INFO L124 PetriNetUnfolderBase]: 912/1566 cut-off events. [2024-06-27 23:22:09,338 INFO L125 PetriNetUnfolderBase]: For 439806/439806 co-relation queries the response was YES. [2024-06-27 23:22:09,356 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. [2024-06-27 23:22:09,361 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 167 changer transitions 0/452 dead transitions. [2024-06-27 23:22:09,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 452 transitions, 5840 flow [2024-06-27 23:22:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:22:09,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:22:09,363 INFO L175 Difference]: Start difference. First operand has 467 places, 438 transitions, 4584 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:22:09,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 452 transitions, 5840 flow [2024-06-27 23:22:11,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 452 transitions, 5474 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:11,126 INFO L231 Difference]: Finished difference. Result has 469 places, 438 transitions, 4557 flow [2024-06-27 23:22:11,126 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} [2024-06-27 23:22:11,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-27 23:22:11,127 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 438 transitions, 4557 flow [2024-06-27 23:22:11,127 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) [2024-06-27 23:22:11,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:11,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:22:11,127 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)] === [2024-06-27 23:22:11,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash 615218829, now seen corresponding path program 33 times [2024-06-27 23:22:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667275272] [2024-06-27 23:22:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:11,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667275272] [2024-06-27 23:22:12,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667275272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:12,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:12,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515134874] [2024-06-27 23:22:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:12,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:12,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:12,966 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) [2024-06-27 23:22:12,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:12,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:12,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:13,649 INFO L124 PetriNetUnfolderBase]: 908/1560 cut-off events. [2024-06-27 23:22:13,649 INFO L125 PetriNetUnfolderBase]: For 432040/432040 co-relation queries the response was YES. [2024-06-27 23:22:13,668 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. [2024-06-27 23:22:13,673 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 162 changer transitions 0/458 dead transitions. [2024-06-27 23:22:13,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 458 transitions, 6193 flow [2024-06-27 23:22:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:22:13,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:22:13,675 INFO L175 Difference]: Start difference. First operand has 469 places, 438 transitions, 4557 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:22:13,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 458 transitions, 6193 flow [2024-06-27 23:22:15,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 458 transitions, 5836 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:15,128 INFO L231 Difference]: Finished difference. Result has 470 places, 438 transitions, 4529 flow [2024-06-27 23:22:15,129 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} [2024-06-27 23:22:15,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-27 23:22:15,129 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 438 transitions, 4529 flow [2024-06-27 23:22:15,129 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) [2024-06-27 23:22:15,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:15,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:22:15,130 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)] === [2024-06-27 23:22:15,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 608068989, now seen corresponding path program 34 times [2024-06-27 23:22:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:15,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841818896] [2024-06-27 23:22:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:17,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:17,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841818896] [2024-06-27 23:22:17,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841818896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:17,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:17,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097760801] [2024-06-27 23:22:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:17,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:17,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:17,171 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) [2024-06-27 23:22:17,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:17,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:17,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:17,944 INFO L124 PetriNetUnfolderBase]: 914/1570 cut-off events. [2024-06-27 23:22:17,945 INFO L125 PetriNetUnfolderBase]: For 437663/437663 co-relation queries the response was YES. [2024-06-27 23:22:17,964 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. [2024-06-27 23:22:17,969 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 156 changer transitions 0/461 dead transitions. [2024-06-27 23:22:17,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 461 transitions, 6209 flow [2024-06-27 23:22:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:22:17,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 23:22:17,971 INFO L175 Difference]: Start difference. First operand has 470 places, 438 transitions, 4529 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:22:17,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 461 transitions, 6209 flow [2024-06-27 23:22:19,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 461 transitions, 5878 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:19,407 INFO L231 Difference]: Finished difference. Result has 471 places, 440 transitions, 4541 flow [2024-06-27 23:22:19,408 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} [2024-06-27 23:22:19,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-27 23:22:19,408 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 440 transitions, 4541 flow [2024-06-27 23:22:19,408 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) [2024-06-27 23:22:19,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:19,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:19,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:22:19,408 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)] === [2024-06-27 23:22:19,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 607866962, now seen corresponding path program 34 times [2024-06-27 23:22:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157395560] [2024-06-27 23:22:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:21,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157395560] [2024-06-27 23:22:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157395560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:21,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:21,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442758523] [2024-06-27 23:22:21,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:21,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:21,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:21,483 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) [2024-06-27 23:22:21,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:21,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:21,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:22,304 INFO L124 PetriNetUnfolderBase]: 917/1575 cut-off events. [2024-06-27 23:22:22,304 INFO L125 PetriNetUnfolderBase]: For 429501/429501 co-relation queries the response was YES. [2024-06-27 23:22:22,323 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. [2024-06-27 23:22:22,328 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 154 changer transitions 0/456 dead transitions. [2024-06-27 23:22:22,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 456 transitions, 5831 flow [2024-06-27 23:22:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:22:22,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 23:22:22,330 INFO L175 Difference]: Start difference. First operand has 471 places, 440 transitions, 4541 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:22:22,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 456 transitions, 5831 flow [2024-06-27 23:22:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 456 transitions, 5518 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:23,859 INFO L231 Difference]: Finished difference. Result has 474 places, 442 transitions, 4561 flow [2024-06-27 23:22:23,860 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} [2024-06-27 23:22:23,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-27 23:22:23,860 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 442 transitions, 4561 flow [2024-06-27 23:22:23,860 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) [2024-06-27 23:22:23,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:23,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:23,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:22:23,861 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)] === [2024-06-27 23:22:23,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 607861382, now seen corresponding path program 35 times [2024-06-27 23:22:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196324413] [2024-06-27 23:22:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:25,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196324413] [2024-06-27 23:22:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196324413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:25,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234201392] [2024-06-27 23:22:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:25,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:26,069 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) [2024-06-27 23:22:26,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:26,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:26,864 INFO L124 PetriNetUnfolderBase]: 915/1572 cut-off events. [2024-06-27 23:22:26,864 INFO L125 PetriNetUnfolderBase]: For 420878/420878 co-relation queries the response was YES. [2024-06-27 23:22:26,882 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. [2024-06-27 23:22:26,887 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 156 changer transitions 0/455 dead transitions. [2024-06-27 23:22:26,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 455 transitions, 5499 flow [2024-06-27 23:22:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:22:26,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:22:26,888 INFO L175 Difference]: Start difference. First operand has 474 places, 442 transitions, 4561 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:22:26,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 455 transitions, 5499 flow [2024-06-27 23:22:28,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 455 transitions, 5142 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:28,256 INFO L231 Difference]: Finished difference. Result has 475 places, 442 transitions, 4521 flow [2024-06-27 23:22:28,257 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} [2024-06-27 23:22:28,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-27 23:22:28,257 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 442 transitions, 4521 flow [2024-06-27 23:22:28,257 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) [2024-06-27 23:22:28,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:28,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:28,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:22:28,258 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)] === [2024-06-27 23:22:28,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash 607861227, now seen corresponding path program 12 times [2024-06-27 23:22:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:28,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805367349] [2024-06-27 23:22:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:28,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805367349] [2024-06-27 23:22:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805367349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259388474] [2024-06-27 23:22:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:29,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:29,856 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) [2024-06-27 23:22:29,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:29,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:29,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:30,452 INFO L124 PetriNetUnfolderBase]: 913/1569 cut-off events. [2024-06-27 23:22:30,453 INFO L125 PetriNetUnfolderBase]: For 412126/412126 co-relation queries the response was YES. [2024-06-27 23:22:30,472 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. [2024-06-27 23:22:30,477 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 368 selfloop transitions, 85 changer transitions 0/455 dead transitions. [2024-06-27 23:22:30,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 455 transitions, 5491 flow [2024-06-27 23:22:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:22:30,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 23:22:30,478 INFO L175 Difference]: Start difference. First operand has 475 places, 442 transitions, 4521 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:22:30,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 455 transitions, 5491 flow [2024-06-27 23:22:31,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 455 transitions, 5174 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:31,914 INFO L231 Difference]: Finished difference. Result has 475 places, 444 transitions, 4424 flow [2024-06-27 23:22:31,915 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} [2024-06-27 23:22:31,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-27 23:22:31,915 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 444 transitions, 4424 flow [2024-06-27 23:22:31,915 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) [2024-06-27 23:22:31,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:31,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:31,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:22:31,915 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)] === [2024-06-27 23:22:31,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:31,916 INFO L85 PathProgramCache]: Analyzing trace with hash 607867179, now seen corresponding path program 35 times [2024-06-27 23:22:31,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:31,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149585788] [2024-06-27 23:22:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:31,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149585788] [2024-06-27 23:22:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149585788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:33,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:33,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668418547] [2024-06-27 23:22:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:33,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:33,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:33,876 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) [2024-06-27 23:22:33,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:33,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:33,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:34,663 INFO L124 PetriNetUnfolderBase]: 909/1563 cut-off events. [2024-06-27 23:22:34,663 INFO L125 PetriNetUnfolderBase]: For 402964/402964 co-relation queries the response was YES. [2024-06-27 23:22:34,683 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. [2024-06-27 23:22:34,688 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 302 selfloop transitions, 159 changer transitions 0/463 dead transitions. [2024-06-27 23:22:34,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 463 transitions, 5754 flow [2024-06-27 23:22:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:22:34,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:22:34,690 INFO L175 Difference]: Start difference. First operand has 475 places, 444 transitions, 4424 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:22:34,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 463 transitions, 5754 flow [2024-06-27 23:22:36,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 463 transitions, 5540 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:36,105 INFO L231 Difference]: Finished difference. Result has 478 places, 444 transitions, 4535 flow [2024-06-27 23:22:36,105 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} [2024-06-27 23:22:36,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-27 23:22:36,105 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 444 transitions, 4535 flow [2024-06-27 23:22:36,106 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) [2024-06-27 23:22:36,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:36,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:22:36,106 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)] === [2024-06-27 23:22:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1319878773, now seen corresponding path program 1 times [2024-06-27 23:22:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217950093] [2024-06-27 23:22:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:37,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217950093] [2024-06-27 23:22:37,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217950093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:37,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:37,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:22:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376107826] [2024-06-27 23:22:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:37,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:22:37,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:22:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:22:37,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:37,986 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) [2024-06-27 23:22:37,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:37,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:37,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:38,610 INFO L124 PetriNetUnfolderBase]: 925/1597 cut-off events. [2024-06-27 23:22:38,611 INFO L125 PetriNetUnfolderBase]: For 432950/432950 co-relation queries the response was YES. [2024-06-27 23:22:38,630 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. [2024-06-27 23:22:38,635 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 441 selfloop transitions, 24 changer transitions 0/467 dead transitions. [2024-06-27 23:22:38,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 467 transitions, 5905 flow [2024-06-27 23:22:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:22:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:22:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-27 23:22:38,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2024-06-27 23:22:38,636 INFO L175 Difference]: Start difference. First operand has 478 places, 444 transitions, 4535 flow. Second operand 13 states and 140 transitions. [2024-06-27 23:22:38,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 467 transitions, 5905 flow [2024-06-27 23:22:39,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 467 transitions, 5536 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 23:22:40,001 INFO L231 Difference]: Finished difference. Result has 480 places, 447 transitions, 4279 flow [2024-06-27 23:22:40,001 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} [2024-06-27 23:22:40,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 449 predicate places. [2024-06-27 23:22:40,002 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 447 transitions, 4279 flow [2024-06-27 23:22:40,002 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) [2024-06-27 23:22:40,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:40,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:40,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:22:40,002 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)] === [2024-06-27 23:22:40,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:40,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1319818323, now seen corresponding path program 2 times [2024-06-27 23:22:40,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:40,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027610482] [2024-06-27 23:22:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:40,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:41,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:41,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027610482] [2024-06-27 23:22:41,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027610482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:41,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:41,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:22:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88884822] [2024-06-27 23:22:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:41,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:22:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:22:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:22:42,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:42,006 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) [2024-06-27 23:22:42,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:42,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:42,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:42,729 INFO L124 PetriNetUnfolderBase]: 929/1605 cut-off events. [2024-06-27 23:22:42,729 INFO L125 PetriNetUnfolderBase]: For 436383/436383 co-relation queries the response was YES. [2024-06-27 23:22:42,747 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. [2024-06-27 23:22:42,751 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 440 selfloop transitions, 23 changer transitions 0/465 dead transitions. [2024-06-27 23:22:42,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 465 transitions, 5278 flow [2024-06-27 23:22:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:22:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:22:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-27 23:22:42,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3293269230769231 [2024-06-27 23:22:42,753 INFO L175 Difference]: Start difference. First operand has 480 places, 447 transitions, 4279 flow. Second operand 13 states and 137 transitions. [2024-06-27 23:22:42,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 465 transitions, 5278 flow [2024-06-27 23:22:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 465 transitions, 5210 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:44,227 INFO L231 Difference]: Finished difference. Result has 484 places, 448 transitions, 4290 flow [2024-06-27 23:22:44,227 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} [2024-06-27 23:22:44,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 23:22:44,228 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 448 transitions, 4290 flow [2024-06-27 23:22:44,228 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) [2024-06-27 23:22:44,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:44,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:22:44,228 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)] === [2024-06-27 23:22:44,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1319818199, now seen corresponding path program 1 times [2024-06-27 23:22:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962234855] [2024-06-27 23:22:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:44,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962234855] [2024-06-27 23:22:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962234855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:45,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6289018] [2024-06-27 23:22:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:45,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:45,993 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) [2024-06-27 23:22:45,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:45,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:46,626 INFO L124 PetriNetUnfolderBase]: 937/1618 cut-off events. [2024-06-27 23:22:46,626 INFO L125 PetriNetUnfolderBase]: For 443328/443328 co-relation queries the response was YES. [2024-06-27 23:22:46,646 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. [2024-06-27 23:22:46,651 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 441 selfloop transitions, 26 changer transitions 0/469 dead transitions. [2024-06-27 23:22:46,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 469 transitions, 5656 flow [2024-06-27 23:22:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:22:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:22:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:22:46,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-27 23:22:46,653 INFO L175 Difference]: Start difference. First operand has 484 places, 448 transitions, 4290 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:22:46,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 469 transitions, 5656 flow [2024-06-27 23:22:48,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 469 transitions, 5598 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:48,306 INFO L231 Difference]: Finished difference. Result has 485 places, 452 transitions, 4341 flow [2024-06-27 23:22:48,306 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} [2024-06-27 23:22:48,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-27 23:22:48,307 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 452 transitions, 4341 flow [2024-06-27 23:22:48,307 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) [2024-06-27 23:22:48,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:48,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:22:48,307 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)] === [2024-06-27 23:22:48,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1317016853, now seen corresponding path program 1 times [2024-06-27 23:22:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:48,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117242772] [2024-06-27 23:22:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:48,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117242772] [2024-06-27 23:22:49,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117242772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:49,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:49,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900961989] [2024-06-27 23:22:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:49,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:49,940 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) [2024-06-27 23:22:49,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:49,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:49,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:50,539 INFO L124 PetriNetUnfolderBase]: 943/1628 cut-off events. [2024-06-27 23:22:50,539 INFO L125 PetriNetUnfolderBase]: For 463021/463021 co-relation queries the response was YES. [2024-06-27 23:22:50,560 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. [2024-06-27 23:22:50,566 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 447 selfloop transitions, 20 changer transitions 0/469 dead transitions. [2024-06-27 23:22:50,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 469 transitions, 5351 flow [2024-06-27 23:22:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:22:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:22:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:22:50,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-27 23:22:50,567 INFO L175 Difference]: Start difference. First operand has 485 places, 452 transitions, 4341 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:22:50,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 469 transitions, 5351 flow [2024-06-27 23:22:52,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 469 transitions, 5298 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:52,258 INFO L231 Difference]: Finished difference. Result has 489 places, 454 transitions, 4367 flow [2024-06-27 23:22:52,258 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} [2024-06-27 23:22:52,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-27 23:22:52,258 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 454 transitions, 4367 flow [2024-06-27 23:22:52,259 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) [2024-06-27 23:22:52,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:52,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:52,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:22:52,259 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)] === [2024-06-27 23:22:52,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1317021813, now seen corresponding path program 3 times [2024-06-27 23:22:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:52,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172903864] [2024-06-27 23:22:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:54,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:54,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172903864] [2024-06-27 23:22:54,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172903864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:54,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:54,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:22:54,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370019104] [2024-06-27 23:22:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:54,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:22:54,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:54,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:22:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:22:54,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:54,152 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) [2024-06-27 23:22:54,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:54,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:54,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:54,816 INFO L124 PetriNetUnfolderBase]: 940/1623 cut-off events. [2024-06-27 23:22:54,816 INFO L125 PetriNetUnfolderBase]: For 438775/438775 co-relation queries the response was YES. [2024-06-27 23:22:54,836 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. [2024-06-27 23:22:54,841 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 448 selfloop transitions, 19 changer transitions 0/469 dead transitions. [2024-06-27 23:22:54,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 469 transitions, 5341 flow [2024-06-27 23:22:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:22:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:22:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 23:22:54,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 23:22:54,842 INFO L175 Difference]: Start difference. First operand has 489 places, 454 transitions, 4367 flow. Second operand 12 states and 126 transitions. [2024-06-27 23:22:54,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 469 transitions, 5341 flow [2024-06-27 23:22:56,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 469 transitions, 5264 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:56,649 INFO L231 Difference]: Finished difference. Result has 491 places, 454 transitions, 4332 flow [2024-06-27 23:22:56,649 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} [2024-06-27 23:22:56,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 460 predicate places. [2024-06-27 23:22:56,650 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 454 transitions, 4332 flow [2024-06-27 23:22:56,650 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) [2024-06-27 23:22:56,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:56,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:56,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:22:56,650 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)] === [2024-06-27 23:22:56,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1317021689, now seen corresponding path program 2 times [2024-06-27 23:22:56,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:56,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259968565] [2024-06-27 23:22:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:58,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:58,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259968565] [2024-06-27 23:22:58,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259968565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:58,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:58,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685482758] [2024-06-27 23:22:58,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:58,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:58,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:22:58,464 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) [2024-06-27 23:22:58,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:58,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:22:58,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:59,163 INFO L124 PetriNetUnfolderBase]: 943/1628 cut-off events. [2024-06-27 23:22:59,163 INFO L125 PetriNetUnfolderBase]: For 429626/429626 co-relation queries the response was YES. [2024-06-27 23:22:59,181 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. [2024-06-27 23:22:59,186 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 446 selfloop transitions, 23 changer transitions 0/471 dead transitions. [2024-06-27 23:22:59,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 471 transitions, 5676 flow [2024-06-27 23:22:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:22:59,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 23:22:59,188 INFO L175 Difference]: Start difference. First operand has 491 places, 454 transitions, 4332 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:22:59,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 471 transitions, 5676 flow [2024-06-27 23:23:01,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 471 transitions, 5638 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:01,043 INFO L231 Difference]: Finished difference. Result has 492 places, 456 transitions, 4367 flow [2024-06-27 23:23:01,043 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} [2024-06-27 23:23:01,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-27 23:23:01,044 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 456 transitions, 4367 flow [2024-06-27 23:23:01,044 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) [2024-06-27 23:23:01,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:01,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:01,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:23:01,044 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)] === [2024-06-27 23:23:01,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1317017039, now seen corresponding path program 3 times [2024-06-27 23:23:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:01,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560798147] [2024-06-27 23:23:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:02,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560798147] [2024-06-27 23:23:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560798147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192118698] [2024-06-27 23:23:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:02,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:02,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:02,850 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) [2024-06-27 23:23:02,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:02,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:02,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:03,470 INFO L124 PetriNetUnfolderBase]: 941/1625 cut-off events. [2024-06-27 23:23:03,470 INFO L125 PetriNetUnfolderBase]: For 419728/419728 co-relation queries the response was YES. [2024-06-27 23:23:03,490 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. [2024-06-27 23:23:03,495 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 448 selfloop transitions, 20 changer transitions 0/470 dead transitions. [2024-06-27 23:23:03,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 470 transitions, 5341 flow [2024-06-27 23:23:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:23:03,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 23:23:03,497 INFO L175 Difference]: Start difference. First operand has 492 places, 456 transitions, 4367 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:23:03,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 470 transitions, 5341 flow [2024-06-27 23:23:05,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 470 transitions, 5268 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:05,299 INFO L231 Difference]: Finished difference. Result has 494 places, 456 transitions, 4339 flow [2024-06-27 23:23:05,299 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} [2024-06-27 23:23:05,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 463 predicate places. [2024-06-27 23:23:05,299 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 456 transitions, 4339 flow [2024-06-27 23:23:05,299 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) [2024-06-27 23:23:05,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:05,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:23:05,300 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)] === [2024-06-27 23:23:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1511936623, now seen corresponding path program 4 times [2024-06-27 23:23:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614265407] [2024-06-27 23:23:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:07,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614265407] [2024-06-27 23:23:07,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614265407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:07,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:07,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:07,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529549770] [2024-06-27 23:23:07,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:07,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:07,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:07,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:07,219 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) [2024-06-27 23:23:07,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:07,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:07,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:07,781 INFO L124 PetriNetUnfolderBase]: 944/1630 cut-off events. [2024-06-27 23:23:07,781 INFO L125 PetriNetUnfolderBase]: For 424563/424563 co-relation queries the response was YES. [2024-06-27 23:23:07,802 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. [2024-06-27 23:23:07,807 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 383 selfloop transitions, 86 changer transitions 0/471 dead transitions. [2024-06-27 23:23:07,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 471 transitions, 5339 flow [2024-06-27 23:23:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:23:07,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 23:23:07,808 INFO L175 Difference]: Start difference. First operand has 494 places, 456 transitions, 4339 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:23:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 471 transitions, 5339 flow [2024-06-27 23:23:09,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 471 transitions, 5294 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:09,654 INFO L231 Difference]: Finished difference. Result has 496 places, 458 transitions, 4503 flow [2024-06-27 23:23:09,654 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} [2024-06-27 23:23:09,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 465 predicate places. [2024-06-27 23:23:09,655 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 458 transitions, 4503 flow [2024-06-27 23:23:09,655 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) [2024-06-27 23:23:09,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:09,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:09,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:23:09,655 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)] === [2024-06-27 23:23:09,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1201725683, now seen corresponding path program 2 times [2024-06-27 23:23:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:09,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848314758] [2024-06-27 23:23:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:11,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:11,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848314758] [2024-06-27 23:23:11,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848314758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:11,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313315418] [2024-06-27 23:23:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:11,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:11,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:11,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:11,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:11,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:11,202 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) [2024-06-27 23:23:11,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:11,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:11,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:11,870 INFO L124 PetriNetUnfolderBase]: 970/1672 cut-off events. [2024-06-27 23:23:11,871 INFO L125 PetriNetUnfolderBase]: For 505930/505930 co-relation queries the response was YES. [2024-06-27 23:23:11,892 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. [2024-06-27 23:23:11,898 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 374 selfloop transitions, 112 changer transitions 0/488 dead transitions. [2024-06-27 23:23:11,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 488 transitions, 6379 flow [2024-06-27 23:23:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 23:23:11,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 23:23:11,900 INFO L175 Difference]: Start difference. First operand has 496 places, 458 transitions, 4503 flow. Second operand 12 states and 151 transitions. [2024-06-27 23:23:11,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 488 transitions, 6379 flow [2024-06-27 23:23:14,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 488 transitions, 6186 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:14,067 INFO L231 Difference]: Finished difference. Result has 498 places, 464 transitions, 4645 flow [2024-06-27 23:23:14,067 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} [2024-06-27 23:23:14,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-27 23:23:14,068 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 464 transitions, 4645 flow [2024-06-27 23:23:14,068 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) [2024-06-27 23:23:14,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:14,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:14,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:23:14,068 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)] === [2024-06-27 23:23:14,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1201546193, now seen corresponding path program 3 times [2024-06-27 23:23:14,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:14,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490510027] [2024-06-27 23:23:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:15,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490510027] [2024-06-27 23:23:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490510027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:15,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977305532] [2024-06-27 23:23:15,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:15,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:15,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:15,779 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) [2024-06-27 23:23:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:16,378 INFO L124 PetriNetUnfolderBase]: 976/1682 cut-off events. [2024-06-27 23:23:16,379 INFO L125 PetriNetUnfolderBase]: For 512319/512319 co-relation queries the response was YES. [2024-06-27 23:23:16,397 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. [2024-06-27 23:23:16,402 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 370 selfloop transitions, 117 changer transitions 0/489 dead transitions. [2024-06-27 23:23:16,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 489 transitions, 6455 flow [2024-06-27 23:23:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 23:23:16,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:23:16,403 INFO L175 Difference]: Start difference. First operand has 498 places, 464 transitions, 4645 flow. Second operand 12 states and 148 transitions. [2024-06-27 23:23:16,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 489 transitions, 6455 flow [2024-06-27 23:23:18,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 489 transitions, 6325 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:18,478 INFO L231 Difference]: Finished difference. Result has 503 places, 466 transitions, 4792 flow [2024-06-27 23:23:18,478 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} [2024-06-27 23:23:18,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-27 23:23:18,478 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 466 transitions, 4792 flow [2024-06-27 23:23:18,478 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) [2024-06-27 23:23:18,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:18,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:18,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:23:18,479 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)] === [2024-06-27 23:23:18,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1201730519, now seen corresponding path program 5 times [2024-06-27 23:23:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486048997] [2024-06-27 23:23:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:20,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486048997] [2024-06-27 23:23:20,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486048997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:20,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:20,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:20,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79413042] [2024-06-27 23:23:20,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:20,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:20,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:20,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:20,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:20,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:20,286 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) [2024-06-27 23:23:20,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:20,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:20,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:21,055 INFO L124 PetriNetUnfolderBase]: 984/1695 cut-off events. [2024-06-27 23:23:21,056 INFO L125 PetriNetUnfolderBase]: For 518289/518289 co-relation queries the response was YES. [2024-06-27 23:23:21,078 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. [2024-06-27 23:23:21,083 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 391 selfloop transitions, 91 changer transitions 0/484 dead transitions. [2024-06-27 23:23:21,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 484 transitions, 6210 flow [2024-06-27 23:23:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:23:21,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 23:23:21,085 INFO L175 Difference]: Start difference. First operand has 503 places, 466 transitions, 4792 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:23:21,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 484 transitions, 6210 flow [2024-06-27 23:23:23,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 484 transitions, 5963 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:23,475 INFO L231 Difference]: Finished difference. Result has 505 places, 470 transitions, 4800 flow [2024-06-27 23:23:23,475 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} [2024-06-27 23:23:23,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 23:23:23,476 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 470 transitions, 4800 flow [2024-06-27 23:23:23,476 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) [2024-06-27 23:23:23,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:23,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:23,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:23:23,476 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)] === [2024-06-27 23:23:23,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1511931849, now seen corresponding path program 4 times [2024-06-27 23:23:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:23,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722157618] [2024-06-27 23:23:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722157618] [2024-06-27 23:23:25,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722157618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:25,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:25,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:25,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73900413] [2024-06-27 23:23:25,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:25,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:25,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:25,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:25,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:25,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:25,152 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) [2024-06-27 23:23:25,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:25,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:25,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:25,772 INFO L124 PetriNetUnfolderBase]: 988/1703 cut-off events. [2024-06-27 23:23:25,773 INFO L125 PetriNetUnfolderBase]: For 540013/540013 co-relation queries the response was YES. [2024-06-27 23:23:25,794 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. [2024-06-27 23:23:25,799 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 443 selfloop transitions, 40 changer transitions 0/485 dead transitions. [2024-06-27 23:23:25,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 485 transitions, 5828 flow [2024-06-27 23:23:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:23:25,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 23:23:25,801 INFO L175 Difference]: Start difference. First operand has 505 places, 470 transitions, 4800 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:23:25,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 485 transitions, 5828 flow [2024-06-27 23:23:28,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 485 transitions, 5680 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:28,225 INFO L231 Difference]: Finished difference. Result has 509 places, 471 transitions, 4764 flow [2024-06-27 23:23:28,225 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} [2024-06-27 23:23:28,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-27 23:23:28,225 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 471 transitions, 4764 flow [2024-06-27 23:23:28,225 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) [2024-06-27 23:23:28,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:28,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:28,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:23:28,226 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)] === [2024-06-27 23:23:28,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1512109603, now seen corresponding path program 6 times [2024-06-27 23:23:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201430521] [2024-06-27 23:23:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201430521] [2024-06-27 23:23:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201430521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:29,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946449481] [2024-06-27 23:23:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:30,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:30,058 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) [2024-06-27 23:23:30,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:30,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:30,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:30,670 INFO L124 PetriNetUnfolderBase]: 986/1700 cut-off events. [2024-06-27 23:23:30,670 INFO L125 PetriNetUnfolderBase]: For 513832/513832 co-relation queries the response was YES. [2024-06-27 23:23:30,692 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. [2024-06-27 23:23:30,697 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 395 selfloop transitions, 87 changer transitions 0/484 dead transitions. [2024-06-27 23:23:30,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 484 transitions, 5762 flow [2024-06-27 23:23:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:23:30,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:23:30,698 INFO L175 Difference]: Start difference. First operand has 509 places, 471 transitions, 4764 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:23:30,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 484 transitions, 5762 flow [2024-06-27 23:23:32,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 484 transitions, 5650 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:32,753 INFO L231 Difference]: Finished difference. Result has 512 places, 471 transitions, 4831 flow [2024-06-27 23:23:32,753 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} [2024-06-27 23:23:32,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-27 23:23:32,753 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 471 transitions, 4831 flow [2024-06-27 23:23:32,753 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) [2024-06-27 23:23:32,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:32,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:32,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:23:32,754 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)] === [2024-06-27 23:23:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1512109789, now seen corresponding path program 4 times [2024-06-27 23:23:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897298937] [2024-06-27 23:23:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:34,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897298937] [2024-06-27 23:23:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897298937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:34,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936731575] [2024-06-27 23:23:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:34,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:34,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:34,445 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) [2024-06-27 23:23:34,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:34,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:35,044 INFO L124 PetriNetUnfolderBase]: 982/1694 cut-off events. [2024-06-27 23:23:35,044 INFO L125 PetriNetUnfolderBase]: For 503183/503183 co-relation queries the response was YES. [2024-06-27 23:23:35,065 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. [2024-06-27 23:23:35,070 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 377 selfloop transitions, 115 changer transitions 0/494 dead transitions. [2024-06-27 23:23:35,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 494 transitions, 6275 flow [2024-06-27 23:23:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 23:23:35,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 23:23:35,072 INFO L175 Difference]: Start difference. First operand has 512 places, 471 transitions, 4831 flow. Second operand 12 states and 149 transitions. [2024-06-27 23:23:35,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 494 transitions, 6275 flow [2024-06-27 23:23:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 494 transitions, 6069 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:37,364 INFO L231 Difference]: Finished difference. Result has 513 places, 471 transitions, 4860 flow [2024-06-27 23:23:37,364 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} [2024-06-27 23:23:37,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 482 predicate places. [2024-06-27 23:23:37,364 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 471 transitions, 4860 flow [2024-06-27 23:23:37,365 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) [2024-06-27 23:23:37,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:37,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:37,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:23:37,365 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)] === [2024-06-27 23:23:37,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1029411381, now seen corresponding path program 1 times [2024-06-27 23:23:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:37,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051824238] [2024-06-27 23:23:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:37,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:39,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051824238] [2024-06-27 23:23:39,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051824238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495487986] [2024-06-27 23:23:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:39,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:39,320 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) [2024-06-27 23:23:39,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:39,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:39,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:39,921 INFO L124 PetriNetUnfolderBase]: 986/1702 cut-off events. [2024-06-27 23:23:39,921 INFO L125 PetriNetUnfolderBase]: For 509081/509081 co-relation queries the response was YES. [2024-06-27 23:23:39,941 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. [2024-06-27 23:23:39,945 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 428 selfloop transitions, 60 changer transitions 0/490 dead transitions. [2024-06-27 23:23:39,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 490 transitions, 5918 flow [2024-06-27 23:23:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:23:39,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 23:23:39,946 INFO L175 Difference]: Start difference. First operand has 513 places, 471 transitions, 4860 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:23:39,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 490 transitions, 5918 flow [2024-06-27 23:23:41,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 490 transitions, 5669 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 23:23:41,964 INFO L231 Difference]: Finished difference. Result has 512 places, 472 transitions, 4749 flow [2024-06-27 23:23:41,965 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} [2024-06-27 23:23:41,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-27 23:23:41,965 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 472 transitions, 4749 flow [2024-06-27 23:23:41,965 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) [2024-06-27 23:23:41,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:41,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:23:41,966 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)] === [2024-06-27 23:23:41,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1029650949, now seen corresponding path program 5 times [2024-06-27 23:23:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409827761] [2024-06-27 23:23:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:43,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409827761] [2024-06-27 23:23:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409827761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:43,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120164753] [2024-06-27 23:23:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:43,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:43,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:43,729 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) [2024-06-27 23:23:43,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:43,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:43,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:44,428 INFO L124 PetriNetUnfolderBase]: 1022/1760 cut-off events. [2024-06-27 23:23:44,428 INFO L125 PetriNetUnfolderBase]: For 614138/614138 co-relation queries the response was YES. [2024-06-27 23:23:44,447 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. [2024-06-27 23:23:44,451 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 393 selfloop transitions, 107 changer transitions 0/502 dead transitions. [2024-06-27 23:23:44,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 502 transitions, 7435 flow [2024-06-27 23:23:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 23:23:44,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 23:23:44,452 INFO L175 Difference]: Start difference. First operand has 512 places, 472 transitions, 4749 flow. Second operand 12 states and 153 transitions. [2024-06-27 23:23:44,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 502 transitions, 7435 flow [2024-06-27 23:23:47,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 502 transitions, 7258 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:23:47,035 INFO L231 Difference]: Finished difference. Result has 512 places, 480 transitions, 4935 flow [2024-06-27 23:23:47,035 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} [2024-06-27 23:23:47,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-27 23:23:47,035 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 480 transitions, 4935 flow [2024-06-27 23:23:47,035 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) [2024-06-27 23:23:47,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:47,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:47,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:23:47,036 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)] === [2024-06-27 23:23:47,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1029420309, now seen corresponding path program 6 times [2024-06-27 23:23:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389843021] [2024-06-27 23:23:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:48,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389843021] [2024-06-27 23:23:48,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389843021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:48,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670101301] [2024-06-27 23:23:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:48,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:48,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:48,885 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) [2024-06-27 23:23:48,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:48,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:48,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:49,752 INFO L124 PetriNetUnfolderBase]: 1018/1754 cut-off events. [2024-06-27 23:23:49,752 INFO L125 PetriNetUnfolderBase]: For 587725/587725 co-relation queries the response was YES. [2024-06-27 23:23:49,772 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. [2024-06-27 23:23:49,776 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 383 selfloop transitions, 114 changer transitions 0/499 dead transitions. [2024-06-27 23:23:49,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 499 transitions, 6735 flow [2024-06-27 23:23:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 23:23:49,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:23:49,778 INFO L175 Difference]: Start difference. First operand has 512 places, 480 transitions, 4935 flow. Second operand 12 states and 148 transitions. [2024-06-27 23:23:49,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 499 transitions, 6735 flow [2024-06-27 23:23:52,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 499 transitions, 6561 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:23:52,332 INFO L231 Difference]: Finished difference. Result has 518 places, 480 transitions, 4994 flow [2024-06-27 23:23:52,332 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} [2024-06-27 23:23:52,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-27 23:23:52,332 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 480 transitions, 4994 flow [2024-06-27 23:23:52,332 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) [2024-06-27 23:23:52,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:52,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:52,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:23:52,333 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)] === [2024-06-27 23:23:52,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1035913569, now seen corresponding path program 7 times [2024-06-27 23:23:52,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:52,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357432021] [2024-06-27 23:23:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:52,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:53,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357432021] [2024-06-27 23:23:53,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357432021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464141163] [2024-06-27 23:23:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:54,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:54,039 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) [2024-06-27 23:23:54,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:54,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:54,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:54,681 INFO L124 PetriNetUnfolderBase]: 1034/1780 cut-off events. [2024-06-27 23:23:54,682 INFO L125 PetriNetUnfolderBase]: For 628552/628552 co-relation queries the response was YES. [2024-06-27 23:23:54,700 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. [2024-06-27 23:23:54,705 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 397 selfloop transitions, 108 changer transitions 0/507 dead transitions. [2024-06-27 23:23:54,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 507 transitions, 7650 flow [2024-06-27 23:23:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:23:54,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 23:23:54,706 INFO L175 Difference]: Start difference. First operand has 518 places, 480 transitions, 4994 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:23:54,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 507 transitions, 7650 flow [2024-06-27 23:23:57,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 507 transitions, 7430 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:57,114 INFO L231 Difference]: Finished difference. Result has 519 places, 484 transitions, 5075 flow [2024-06-27 23:23:57,114 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} [2024-06-27 23:23:57,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2024-06-27 23:23:57,115 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 484 transitions, 5075 flow [2024-06-27 23:23:57,115 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) [2024-06-27 23:23:57,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:57,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:57,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:23:57,115 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)] === [2024-06-27 23:23:57,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1677748737, now seen corresponding path program 7 times [2024-06-27 23:23:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471539406] [2024-06-27 23:23:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:58,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471539406] [2024-06-27 23:23:58,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471539406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:58,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:58,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:58,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072470217] [2024-06-27 23:23:58,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:58,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:59,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:23:59,118 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) [2024-06-27 23:23:59,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:59,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:23:59,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:59,777 INFO L124 PetriNetUnfolderBase]: 1037/1785 cut-off events. [2024-06-27 23:23:59,777 INFO L125 PetriNetUnfolderBase]: For 618505/618505 co-relation queries the response was YES. [2024-06-27 23:23:59,802 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. [2024-06-27 23:23:59,809 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 417 selfloop transitions, 79 changer transitions 0/498 dead transitions. [2024-06-27 23:23:59,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 498 transitions, 6133 flow [2024-06-27 23:23:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:23:59,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 23:23:59,810 INFO L175 Difference]: Start difference. First operand has 519 places, 484 transitions, 5075 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:23:59,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 498 transitions, 6133 flow [2024-06-27 23:24:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 498 transitions, 5876 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:02,396 INFO L231 Difference]: Finished difference. Result has 523 places, 486 transitions, 5021 flow [2024-06-27 23:24:02,396 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} [2024-06-27 23:24:02,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 492 predicate places. [2024-06-27 23:24:02,397 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5021 flow [2024-06-27 23:24:02,397 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) [2024-06-27 23:24:02,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:02,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:02,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:24:02,399 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)] === [2024-06-27 23:24:02,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1684004847, now seen corresponding path program 8 times [2024-06-27 23:24:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:02,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220603675] [2024-06-27 23:24:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:02,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:04,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:04,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220603675] [2024-06-27 23:24:04,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220603675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:04,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:04,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786839278] [2024-06-27 23:24:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:04,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:04,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:04,370 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) [2024-06-27 23:24:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:04,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:05,009 INFO L124 PetriNetUnfolderBase]: 1040/1790 cut-off events. [2024-06-27 23:24:05,009 INFO L125 PetriNetUnfolderBase]: For 624172/624172 co-relation queries the response was YES. [2024-06-27 23:24:05,034 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. [2024-06-27 23:24:05,040 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 416 selfloop transitions, 82 changer transitions 0/500 dead transitions. [2024-06-27 23:24:05,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 500 transitions, 6087 flow [2024-06-27 23:24:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:24:05,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:24:05,041 INFO L175 Difference]: Start difference. First operand has 523 places, 486 transitions, 5021 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:24:05,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 500 transitions, 6087 flow [2024-06-27 23:24:07,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 500 transitions, 5900 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:07,594 INFO L231 Difference]: Finished difference. Result has 525 places, 488 transitions, 5047 flow [2024-06-27 23:24:07,594 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} [2024-06-27 23:24:07,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 494 predicate places. [2024-06-27 23:24:07,595 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 488 transitions, 5047 flow [2024-06-27 23:24:07,595 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) [2024-06-27 23:24:07,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:07,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:07,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:24:07,595 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)] === [2024-06-27 23:24:07,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1684005033, now seen corresponding path program 8 times [2024-06-27 23:24:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497006440] [2024-06-27 23:24:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:09,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497006440] [2024-06-27 23:24:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497006440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122750185] [2024-06-27 23:24:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:09,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:09,223 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) [2024-06-27 23:24:09,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:09,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:09,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:09,930 INFO L124 PetriNetUnfolderBase]: 1036/1784 cut-off events. [2024-06-27 23:24:09,930 INFO L125 PetriNetUnfolderBase]: For 613165/613165 co-relation queries the response was YES. [2024-06-27 23:24:09,954 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. [2024-06-27 23:24:09,960 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 394 selfloop transitions, 112 changer transitions 0/508 dead transitions. [2024-06-27 23:24:09,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 508 transitions, 6889 flow [2024-06-27 23:24:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 23:24:09,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:24:09,961 INFO L175 Difference]: Start difference. First operand has 525 places, 488 transitions, 5047 flow. Second operand 12 states and 150 transitions. [2024-06-27 23:24:09,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 508 transitions, 6889 flow [2024-06-27 23:24:12,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 508 transitions, 6672 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:12,636 INFO L231 Difference]: Finished difference. Result has 527 places, 488 transitions, 5059 flow [2024-06-27 23:24:12,636 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} [2024-06-27 23:24:12,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 496 predicate places. [2024-06-27 23:24:12,637 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 488 transitions, 5059 flow [2024-06-27 23:24:12,637 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) [2024-06-27 23:24:12,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:12,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:12,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:24:12,637 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)] === [2024-06-27 23:24:12,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1677755433, now seen corresponding path program 9 times [2024-06-27 23:24:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516431701] [2024-06-27 23:24:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516431701] [2024-06-27 23:24:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516431701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:14,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:14,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:14,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100989649] [2024-06-27 23:24:14,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:14,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:14,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:14,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:14,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:14,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:14,316 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) [2024-06-27 23:24:14,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:14,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:15,190 INFO L124 PetriNetUnfolderBase]: 1032/1778 cut-off events. [2024-06-27 23:24:15,190 INFO L125 PetriNetUnfolderBase]: For 584534/584534 co-relation queries the response was YES. [2024-06-27 23:24:15,215 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. [2024-06-27 23:24:15,222 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 397 selfloop transitions, 109 changer transitions 0/508 dead transitions. [2024-06-27 23:24:15,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 508 transitions, 6905 flow [2024-06-27 23:24:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 23:24:15,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:24:15,223 INFO L175 Difference]: Start difference. First operand has 527 places, 488 transitions, 5059 flow. Second operand 12 states and 152 transitions. [2024-06-27 23:24:15,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 508 transitions, 6905 flow [2024-06-27 23:24:17,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 508 transitions, 6654 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:17,795 INFO L231 Difference]: Finished difference. Result has 528 places, 488 transitions, 5031 flow [2024-06-27 23:24:17,795 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} [2024-06-27 23:24:17,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 497 predicate places. [2024-06-27 23:24:17,796 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 488 transitions, 5031 flow [2024-06-27 23:24:17,796 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) [2024-06-27 23:24:17,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:17,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:24:17,796 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)] === [2024-06-27 23:24:17,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1677575757, now seen corresponding path program 9 times [2024-06-27 23:24:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:17,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19272340] [2024-06-27 23:24:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:19,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19272340] [2024-06-27 23:24:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19272340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:19,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:19,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757992555] [2024-06-27 23:24:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:19,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:19,724 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) [2024-06-27 23:24:19,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:19,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:19,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:20,343 INFO L124 PetriNetUnfolderBase]: 1035/1783 cut-off events. [2024-06-27 23:24:20,343 INFO L125 PetriNetUnfolderBase]: For 572964/572964 co-relation queries the response was YES. [2024-06-27 23:24:20,367 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. [2024-06-27 23:24:20,373 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 420 selfloop transitions, 80 changer transitions 0/502 dead transitions. [2024-06-27 23:24:20,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 502 transitions, 6105 flow [2024-06-27 23:24:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:24:20,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 23:24:20,374 INFO L175 Difference]: Start difference. First operand has 528 places, 488 transitions, 5031 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:24:20,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 502 transitions, 6105 flow [2024-06-27 23:24:22,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 502 transitions, 5860 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:22,730 INFO L231 Difference]: Finished difference. Result has 529 places, 490 transitions, 4999 flow [2024-06-27 23:24:22,730 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} [2024-06-27 23:24:22,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 498 predicate places. [2024-06-27 23:24:22,730 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 490 transitions, 4999 flow [2024-06-27 23:24:22,731 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) [2024-06-27 23:24:22,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:22,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:22,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:24:22,731 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)] === [2024-06-27 23:24:22,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1677575943, now seen corresponding path program 10 times [2024-06-27 23:24:22,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250157311] [2024-06-27 23:24:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:22,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:24,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250157311] [2024-06-27 23:24:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250157311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897692727] [2024-06-27 23:24:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:24,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:24,356 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) [2024-06-27 23:24:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:25,066 INFO L124 PetriNetUnfolderBase]: 1031/1777 cut-off events. [2024-06-27 23:24:25,067 INFO L125 PetriNetUnfolderBase]: For 560311/560311 co-relation queries the response was YES. [2024-06-27 23:24:25,092 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. [2024-06-27 23:24:25,098 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 396 selfloop transitions, 111 changer transitions 0/509 dead transitions. [2024-06-27 23:24:25,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 509 transitions, 6473 flow [2024-06-27 23:24:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 23:24:25,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:24:25,099 INFO L175 Difference]: Start difference. First operand has 529 places, 490 transitions, 4999 flow. Second operand 12 states and 150 transitions. [2024-06-27 23:24:25,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 509 transitions, 6473 flow [2024-06-27 23:24:27,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 509 transitions, 6256 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:27,837 INFO L231 Difference]: Finished difference. Result has 531 places, 490 transitions, 5009 flow [2024-06-27 23:24:27,837 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} [2024-06-27 23:24:27,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-27 23:24:27,838 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 490 transitions, 5009 flow [2024-06-27 23:24:27,838 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) [2024-06-27 23:24:27,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:27,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:27,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:24:27,838 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)] === [2024-06-27 23:24:27,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:27,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1677570983, now seen corresponding path program 5 times [2024-06-27 23:24:27,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:27,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175559102] [2024-06-27 23:24:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:27,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:29,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:29,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175559102] [2024-06-27 23:24:29,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175559102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:29,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:29,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:29,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837388184] [2024-06-27 23:24:29,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:29,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:29,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:29,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:29,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:29,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:29,575 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) [2024-06-27 23:24:29,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:29,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:29,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:30,252 INFO L124 PetriNetUnfolderBase]: 1035/1785 cut-off events. [2024-06-27 23:24:30,253 INFO L125 PetriNetUnfolderBase]: For 566628/566628 co-relation queries the response was YES. [2024-06-27 23:24:30,277 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. [2024-06-27 23:24:30,283 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 464 selfloop transitions, 38 changer transitions 0/504 dead transitions. [2024-06-27 23:24:30,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 504 transitions, 6073 flow [2024-06-27 23:24:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:24:30,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 23:24:30,285 INFO L175 Difference]: Start difference. First operand has 531 places, 490 transitions, 5009 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:24:30,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 504 transitions, 6073 flow [2024-06-27 23:24:33,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 504 transitions, 5833 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 23:24:33,138 INFO L231 Difference]: Finished difference. Result has 530 places, 491 transitions, 4879 flow [2024-06-27 23:24:33,138 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} [2024-06-27 23:24:33,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 499 predicate places. [2024-06-27 23:24:33,139 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 491 transitions, 4879 flow [2024-06-27 23:24:33,139 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) [2024-06-27 23:24:33,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:33,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:33,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:24:33,139 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)] === [2024-06-27 23:24:33,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1677571107, now seen corresponding path program 10 times [2024-06-27 23:24:33,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:33,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437408486] [2024-06-27 23:24:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437408486] [2024-06-27 23:24:34,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437408486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:34,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:34,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468939552] [2024-06-27 23:24:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:34,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:34,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:34,914 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) [2024-06-27 23:24:34,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:34,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:34,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:35,532 INFO L124 PetriNetUnfolderBase]: 1038/1790 cut-off events. [2024-06-27 23:24:35,532 INFO L125 PetriNetUnfolderBase]: For 553894/553894 co-relation queries the response was YES. [2024-06-27 23:24:35,559 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. [2024-06-27 23:24:35,565 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 416 selfloop transitions, 87 changer transitions 0/505 dead transitions. [2024-06-27 23:24:35,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 505 transitions, 5963 flow [2024-06-27 23:24:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:24:35,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:24:35,566 INFO L175 Difference]: Start difference. First operand has 530 places, 491 transitions, 4879 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:24:35,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 505 transitions, 5963 flow [2024-06-27 23:24:38,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 505 transitions, 5863 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:38,238 INFO L231 Difference]: Finished difference. Result has 532 places, 493 transitions, 5010 flow [2024-06-27 23:24:38,238 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} [2024-06-27 23:24:38,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 501 predicate places. [2024-06-27 23:24:38,238 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 493 transitions, 5010 flow [2024-06-27 23:24:38,239 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) [2024-06-27 23:24:38,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:38,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:24:38,239 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)] === [2024-06-27 23:24:38,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -63191517, now seen corresponding path program 11 times [2024-06-27 23:24:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765447609] [2024-06-27 23:24:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765447609] [2024-06-27 23:24:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765447609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:39,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093175125] [2024-06-27 23:24:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:40,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:40,139 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) [2024-06-27 23:24:40,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:40,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:40,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:40,766 INFO L124 PetriNetUnfolderBase]: 1041/1795 cut-off events. [2024-06-27 23:24:40,766 INFO L125 PetriNetUnfolderBase]: For 559231/559231 co-relation queries the response was YES. [2024-06-27 23:24:40,791 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. [2024-06-27 23:24:40,796 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 427 selfloop transitions, 77 changer transitions 0/506 dead transitions. [2024-06-27 23:24:40,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 506 transitions, 6096 flow [2024-06-27 23:24:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:24:40,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 23:24:40,801 INFO L175 Difference]: Start difference. First operand has 532 places, 493 transitions, 5010 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:24:40,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 506 transitions, 6096 flow [2024-06-27 23:24:43,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 506 transitions, 5881 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:43,705 INFO L231 Difference]: Finished difference. Result has 535 places, 495 transitions, 5010 flow [2024-06-27 23:24:43,706 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} [2024-06-27 23:24:43,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 504 predicate places. [2024-06-27 23:24:43,706 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 495 transitions, 5010 flow [2024-06-27 23:24:43,706 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) [2024-06-27 23:24:43,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:43,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:43,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:24:43,707 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)] === [2024-06-27 23:24:43,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1754592571, now seen corresponding path program 2 times [2024-06-27 23:24:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257200280] [2024-06-27 23:24:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:43,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257200280] [2024-06-27 23:24:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257200280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:45,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:45,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103491286] [2024-06-27 23:24:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:45,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:45,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:45,891 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) [2024-06-27 23:24:45,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:45,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:45,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:46,597 INFO L124 PetriNetUnfolderBase]: 1045/1803 cut-off events. [2024-06-27 23:24:46,597 INFO L125 PetriNetUnfolderBase]: For 583651/583651 co-relation queries the response was YES. [2024-06-27 23:24:46,622 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. [2024-06-27 23:24:46,627 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 455 selfloop transitions, 56 changer transitions 0/513 dead transitions. [2024-06-27 23:24:46,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 513 transitions, 6112 flow [2024-06-27 23:24:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:24:46,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-27 23:24:46,629 INFO L175 Difference]: Start difference. First operand has 535 places, 495 transitions, 5010 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:24:46,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 513 transitions, 6112 flow [2024-06-27 23:24:49,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 513 transitions, 5913 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:49,612 INFO L231 Difference]: Finished difference. Result has 535 places, 496 transitions, 4943 flow [2024-06-27 23:24:49,613 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} [2024-06-27 23:24:49,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 504 predicate places. [2024-06-27 23:24:49,613 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 496 transitions, 4943 flow [2024-06-27 23:24:49,613 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) [2024-06-27 23:24:49,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:49,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:49,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:24:49,613 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)] === [2024-06-27 23:24:49,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:49,614 INFO L85 PathProgramCache]: Analyzing trace with hash 164716329, now seen corresponding path program 11 times [2024-06-27 23:24:49,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:49,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256551352] [2024-06-27 23:24:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:49,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:51,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:51,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256551352] [2024-06-27 23:24:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256551352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397208361] [2024-06-27 23:24:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:51,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:51,440 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) [2024-06-27 23:24:51,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:51,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:51,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:52,270 INFO L124 PetriNetUnfolderBase]: 1081/1861 cut-off events. [2024-06-27 23:24:52,270 INFO L125 PetriNetUnfolderBase]: For 704119/704119 co-relation queries the response was YES. [2024-06-27 23:24:52,297 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. [2024-06-27 23:24:52,304 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 407 selfloop transitions, 116 changer transitions 0/525 dead transitions. [2024-06-27 23:24:52,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 525 transitions, 7783 flow [2024-06-27 23:24:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 23:24:52,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 23:24:52,306 INFO L175 Difference]: Start difference. First operand has 535 places, 496 transitions, 4943 flow. Second operand 12 states and 153 transitions. [2024-06-27 23:24:52,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 525 transitions, 7783 flow [2024-06-27 23:24:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 525 transitions, 7683 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:24:55,986 INFO L231 Difference]: Finished difference. Result has 541 places, 504 transitions, 5232 flow [2024-06-27 23:24:55,986 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} [2024-06-27 23:24:55,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 510 predicate places. [2024-06-27 23:24:55,987 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 504 transitions, 5232 flow [2024-06-27 23:24:55,987 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) [2024-06-27 23:24:55,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:55,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:55,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:24:55,987 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)] === [2024-06-27 23:24:55,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 164946969, now seen corresponding path program 12 times [2024-06-27 23:24:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:55,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311260954] [2024-06-27 23:24:55,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:55,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311260954] [2024-06-27 23:24:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311260954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:57,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393960073] [2024-06-27 23:24:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:57,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:57,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:57,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:24:57,848 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) [2024-06-27 23:24:57,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:57,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:24:57,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:58,763 INFO L124 PetriNetUnfolderBase]: 1087/1871 cut-off events. [2024-06-27 23:24:58,763 INFO L125 PetriNetUnfolderBase]: For 712072/712072 co-relation queries the response was YES. [2024-06-27 23:24:58,791 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. [2024-06-27 23:24:58,797 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 408 selfloop transitions, 117 changer transitions 0/527 dead transitions. [2024-06-27 23:24:58,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 527 transitions, 7974 flow [2024-06-27 23:24:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 23:24:58,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 23:24:58,799 INFO L175 Difference]: Start difference. First operand has 541 places, 504 transitions, 5232 flow. Second operand 12 states and 154 transitions. [2024-06-27 23:24:58,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 527 transitions, 7974 flow [2024-06-27 23:25:02,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 527 transitions, 7810 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:25:02,372 INFO L231 Difference]: Finished difference. Result has 547 places, 506 transitions, 5349 flow [2024-06-27 23:25:02,373 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} [2024-06-27 23:25:02,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 516 predicate places. [2024-06-27 23:25:02,373 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 506 transitions, 5349 flow [2024-06-27 23:25:02,373 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) [2024-06-27 23:25:02,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:02,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:02,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:25:02,374 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)] === [2024-06-27 23:25:02,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash -579657299, now seen corresponding path program 3 times [2024-06-27 23:25:02,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:02,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559724500] [2024-06-27 23:25:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559724500] [2024-06-27 23:25:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559724500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:04,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956319653] [2024-06-27 23:25:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:04,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:04,582 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) [2024-06-27 23:25:04,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:04,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:04,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:05,341 INFO L124 PetriNetUnfolderBase]: 1098/1892 cut-off events. [2024-06-27 23:25:05,342 INFO L125 PetriNetUnfolderBase]: For 759023/759023 co-relation queries the response was YES. [2024-06-27 23:25:05,369 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. [2024-06-27 23:25:05,375 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 465 selfloop transitions, 59 changer transitions 0/526 dead transitions. [2024-06-27 23:25:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 526 transitions, 6885 flow [2024-06-27 23:25:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:25:05,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:25:05,377 INFO L175 Difference]: Start difference. First operand has 547 places, 506 transitions, 5349 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:25:05,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 526 transitions, 6885 flow [2024-06-27 23:25:09,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 526 transitions, 6691 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:09,019 INFO L231 Difference]: Finished difference. Result has 550 places, 508 transitions, 5311 flow [2024-06-27 23:25:09,019 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} [2024-06-27 23:25:09,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-27 23:25:09,020 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 508 transitions, 5311 flow [2024-06-27 23:25:09,020 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) [2024-06-27 23:25:09,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:09,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:09,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:25:09,020 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)] === [2024-06-27 23:25:09,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1754295343, now seen corresponding path program 13 times [2024-06-27 23:25:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:09,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403783746] [2024-06-27 23:25:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:09,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:10,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:10,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403783746] [2024-06-27 23:25:10,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403783746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:10,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:10,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:10,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327089328] [2024-06-27 23:25:10,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:10,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:10,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:10,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:10,865 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) [2024-06-27 23:25:10,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:10,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:10,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:11,539 INFO L124 PetriNetUnfolderBase]: 1094/1886 cut-off events. [2024-06-27 23:25:11,539 INFO L125 PetriNetUnfolderBase]: For 727274/727274 co-relation queries the response was YES. [2024-06-27 23:25:11,564 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. [2024-06-27 23:25:11,569 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 391 selfloop transitions, 133 changer transitions 0/526 dead transitions. [2024-06-27 23:25:11,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 526 transitions, 7221 flow [2024-06-27 23:25:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 23:25:11,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 23:25:11,573 INFO L175 Difference]: Start difference. First operand has 550 places, 508 transitions, 5311 flow. Second operand 12 states and 148 transitions. [2024-06-27 23:25:11,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 526 transitions, 7221 flow [2024-06-27 23:25:14,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 526 transitions, 7112 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:14,874 INFO L231 Difference]: Finished difference. Result has 555 places, 508 transitions, 5473 flow [2024-06-27 23:25:14,875 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} [2024-06-27 23:25:14,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 524 predicate places. [2024-06-27 23:25:14,875 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 508 transitions, 5473 flow [2024-06-27 23:25:14,875 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) [2024-06-27 23:25:14,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:14,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:14,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:25:14,876 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)] === [2024-06-27 23:25:14,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1746260701, now seen corresponding path program 4 times [2024-06-27 23:25:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:14,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76497898] [2024-06-27 23:25:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:16,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76497898] [2024-06-27 23:25:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76497898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:16,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:16,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:16,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146652560] [2024-06-27 23:25:16,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:16,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:16,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:16,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:16,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:16,698 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) [2024-06-27 23:25:16,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:16,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:16,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:17,343 INFO L124 PetriNetUnfolderBase]: 1098/1894 cut-off events. [2024-06-27 23:25:17,343 INFO L125 PetriNetUnfolderBase]: For 735175/735175 co-relation queries the response was YES. [2024-06-27 23:25:17,371 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. [2024-06-27 23:25:17,377 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 471 selfloop transitions, 54 changer transitions 0/527 dead transitions. [2024-06-27 23:25:17,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 527 transitions, 6609 flow [2024-06-27 23:25:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:25:17,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 23:25:17,379 INFO L175 Difference]: Start difference. First operand has 555 places, 508 transitions, 5473 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:25:17,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 527 transitions, 6609 flow [2024-06-27 23:25:21,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 527 transitions, 6378 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:21,239 INFO L231 Difference]: Finished difference. Result has 555 places, 509 transitions, 5368 flow [2024-06-27 23:25:21,239 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} [2024-06-27 23:25:21,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 524 predicate places. [2024-06-27 23:25:21,239 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 509 transitions, 5368 flow [2024-06-27 23:25:21,239 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) [2024-06-27 23:25:21,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:21,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:21,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:25:21,240 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)] === [2024-06-27 23:25:21,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 164709819, now seen corresponding path program 14 times [2024-06-27 23:25:21,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:21,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211463420] [2024-06-27 23:25:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:22,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211463420] [2024-06-27 23:25:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211463420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:22,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:22,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034596406] [2024-06-27 23:25:22,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:22,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:22,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:22,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:22,866 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) [2024-06-27 23:25:22,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:22,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:22,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:23,548 INFO L124 PetriNetUnfolderBase]: 1094/1888 cut-off events. [2024-06-27 23:25:23,548 INFO L125 PetriNetUnfolderBase]: For 702169/702169 co-relation queries the response was YES. [2024-06-27 23:25:23,575 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. [2024-06-27 23:25:23,582 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 406 selfloop transitions, 120 changer transitions 0/528 dead transitions. [2024-06-27 23:25:23,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 528 transitions, 7298 flow [2024-06-27 23:25:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 23:25:23,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:25:23,583 INFO L175 Difference]: Start difference. First operand has 555 places, 509 transitions, 5368 flow. Second operand 12 states and 150 transitions. [2024-06-27 23:25:23,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 528 transitions, 7298 flow [2024-06-27 23:25:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 528 transitions, 7154 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:27,291 INFO L231 Difference]: Finished difference. Result has 557 places, 509 transitions, 5469 flow [2024-06-27 23:25:27,291 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} [2024-06-27 23:25:27,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 526 predicate places. [2024-06-27 23:25:27,292 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 509 transitions, 5469 flow [2024-06-27 23:25:27,292 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) [2024-06-27 23:25:27,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:27,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:25:27,292 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)] === [2024-06-27 23:25:27,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash 164709633, now seen corresponding path program 12 times [2024-06-27 23:25:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:27,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296920033] [2024-06-27 23:25:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:29,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296920033] [2024-06-27 23:25:29,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296920033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:29,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:29,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:25:29,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488639045] [2024-06-27 23:25:29,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:29,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:25:29,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:29,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:25:29,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:25:29,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:29,155 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) [2024-06-27 23:25:29,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:29,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:29,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:29,871 INFO L124 PetriNetUnfolderBase]: 1097/1893 cut-off events. [2024-06-27 23:25:29,871 INFO L125 PetriNetUnfolderBase]: For 689557/689557 co-relation queries the response was YES. [2024-06-27 23:25:29,894 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. [2024-06-27 23:25:29,899 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 438 selfloop transitions, 82 changer transitions 0/522 dead transitions. [2024-06-27 23:25:29,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 522 transitions, 6591 flow [2024-06-27 23:25:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:25:29,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:25:29,900 INFO L175 Difference]: Start difference. First operand has 557 places, 509 transitions, 5469 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:25:29,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 522 transitions, 6591 flow [2024-06-27 23:25:33,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 522 transitions, 6380 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:33,648 INFO L231 Difference]: Finished difference. Result has 559 places, 511 transitions, 5487 flow [2024-06-27 23:25:33,648 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} [2024-06-27 23:25:33,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 528 predicate places. [2024-06-27 23:25:33,649 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 511 transitions, 5487 flow [2024-06-27 23:25:33,649 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) [2024-06-27 23:25:33,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:33,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:33,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:25:33,649 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)] === [2024-06-27 23:25:33,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash -63191331, now seen corresponding path program 15 times [2024-06-27 23:25:33,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:33,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484192611] [2024-06-27 23:25:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:33,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:35,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:35,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484192611] [2024-06-27 23:25:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484192611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:35,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438706156] [2024-06-27 23:25:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:35,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:35,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:35,339 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) [2024-06-27 23:25:35,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:35,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:35,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:36,074 INFO L124 PetriNetUnfolderBase]: 1123/1935 cut-off events. [2024-06-27 23:25:36,075 INFO L125 PetriNetUnfolderBase]: For 798565/798565 co-relation queries the response was YES. [2024-06-27 23:25:36,104 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. [2024-06-27 23:25:36,110 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 417 selfloop transitions, 120 changer transitions 0/539 dead transitions. [2024-06-27 23:25:36,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 539 transitions, 8387 flow [2024-06-27 23:25:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 23:25:36,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:25:36,112 INFO L175 Difference]: Start difference. First operand has 559 places, 511 transitions, 5487 flow. Second operand 12 states and 156 transitions. [2024-06-27 23:25:36,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 539 transitions, 8387 flow [2024-06-27 23:25:40,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 539 transitions, 8174 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:40,397 INFO L231 Difference]: Finished difference. Result has 561 places, 517 transitions, 5639 flow [2024-06-27 23:25:40,397 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} [2024-06-27 23:25:40,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-27 23:25:40,398 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 517 transitions, 5639 flow [2024-06-27 23:25:40,398 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) [2024-06-27 23:25:40,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:40,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:40,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:25:40,398 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)] === [2024-06-27 23:25:40,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -56689143, now seen corresponding path program 5 times [2024-06-27 23:25:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414732718] [2024-06-27 23:25:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414732718] [2024-06-27 23:25:42,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414732718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:42,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:42,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145024411] [2024-06-27 23:25:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:42,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:42,588 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) [2024-06-27 23:25:42,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:42,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:42,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:43,348 INFO L124 PetriNetUnfolderBase]: 1120/1930 cut-off events. [2024-06-27 23:25:43,349 INFO L125 PetriNetUnfolderBase]: For 765976/765976 co-relation queries the response was YES. [2024-06-27 23:25:43,377 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. [2024-06-27 23:25:43,383 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 480 selfloop transitions, 53 changer transitions 0/535 dead transitions. [2024-06-27 23:25:43,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 535 transitions, 6779 flow [2024-06-27 23:25:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:25:43,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 23:25:43,385 INFO L175 Difference]: Start difference. First operand has 561 places, 517 transitions, 5639 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:25:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 535 transitions, 6779 flow [2024-06-27 23:25:47,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 535 transitions, 6550 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:47,400 INFO L231 Difference]: Finished difference. Result has 565 places, 517 transitions, 5520 flow [2024-06-27 23:25:47,400 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} [2024-06-27 23:25:47,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-27 23:25:47,401 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 517 transitions, 5520 flow [2024-06-27 23:25:47,401 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) [2024-06-27 23:25:47,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:47,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:47,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:25:47,401 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)] === [2024-06-27 23:25:47,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -56928711, now seen corresponding path program 16 times [2024-06-27 23:25:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023440177] [2024-06-27 23:25:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:48,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023440177] [2024-06-27 23:25:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023440177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:48,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111348628] [2024-06-27 23:25:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:48,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:49,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:49,012 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) [2024-06-27 23:25:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:49,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:49,910 INFO L124 PetriNetUnfolderBase]: 1136/1956 cut-off events. [2024-06-27 23:25:49,910 INFO L125 PetriNetUnfolderBase]: For 814778/814778 co-relation queries the response was YES. [2024-06-27 23:25:49,939 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. [2024-06-27 23:25:49,945 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 420 selfloop transitions, 121 changer transitions 0/543 dead transitions. [2024-06-27 23:25:49,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 543 transitions, 8408 flow [2024-06-27 23:25:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:49,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 23:25:49,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-27 23:25:49,946 INFO L175 Difference]: Start difference. First operand has 565 places, 517 transitions, 5520 flow. Second operand 12 states and 158 transitions. [2024-06-27 23:25:49,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 543 transitions, 8408 flow [2024-06-27 23:25:54,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 543 transitions, 8246 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-27 23:25:54,119 INFO L231 Difference]: Finished difference. Result has 563 places, 521 transitions, 5689 flow [2024-06-27 23:25:54,120 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} [2024-06-27 23:25:54,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 532 predicate places. [2024-06-27 23:25:54,120 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 521 transitions, 5689 flow [2024-06-27 23:25:54,120 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) [2024-06-27 23:25:54,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:54,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:54,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:25:54,120 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)] === [2024-06-27 23:25:54,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash -63184821, now seen corresponding path program 17 times [2024-06-27 23:25:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:54,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122140196] [2024-06-27 23:25:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:54,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:55,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122140196] [2024-06-27 23:25:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122140196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:55,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926010947] [2024-06-27 23:25:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:55,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:55,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:25:55,882 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) [2024-06-27 23:25:55,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:55,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:25:55,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:56,826 INFO L124 PetriNetUnfolderBase]: 1132/1950 cut-off events. [2024-06-27 23:25:56,827 INFO L125 PetriNetUnfolderBase]: For 781794/781794 co-relation queries the response was YES. [2024-06-27 23:25:56,856 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. [2024-06-27 23:25:56,863 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 414 selfloop transitions, 125 changer transitions 0/541 dead transitions. [2024-06-27 23:25:56,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 541 transitions, 8077 flow [2024-06-27 23:25:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 23:25:56,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 23:25:56,864 INFO L175 Difference]: Start difference. First operand has 563 places, 521 transitions, 5689 flow. Second operand 12 states and 153 transitions. [2024-06-27 23:25:56,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 541 transitions, 8077 flow [2024-06-27 23:26:01,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 541 transitions, 7652 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:01,085 INFO L231 Difference]: Finished difference. Result has 564 places, 521 transitions, 5519 flow [2024-06-27 23:26:01,086 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} [2024-06-27 23:26:01,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 533 predicate places. [2024-06-27 23:26:01,086 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 521 transitions, 5519 flow [2024-06-27 23:26:01,086 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) [2024-06-27 23:26:01,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:01,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:01,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:26:01,087 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)] === [2024-06-27 23:26:01,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1517935657, now seen corresponding path program 13 times [2024-06-27 23:26:01,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:01,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395954567] [2024-06-27 23:26:01,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:01,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:02,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395954567] [2024-06-27 23:26:02,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395954567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:02,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:02,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:02,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146983166] [2024-06-27 23:26:02,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:02,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:02,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:02,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:02,892 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) [2024-06-27 23:26:02,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:02,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:02,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:03,714 INFO L124 PetriNetUnfolderBase]: 1140/1963 cut-off events. [2024-06-27 23:26:03,714 INFO L125 PetriNetUnfolderBase]: For 787911/787911 co-relation queries the response was YES. [2024-06-27 23:26:03,744 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. [2024-06-27 23:26:03,751 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 449 selfloop transitions, 86 changer transitions 0/537 dead transitions. [2024-06-27 23:26:03,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 537 transitions, 7149 flow [2024-06-27 23:26:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:26:03,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 23:26:03,753 INFO L175 Difference]: Start difference. First operand has 564 places, 521 transitions, 5519 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:26:03,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 537 transitions, 7149 flow [2024-06-27 23:26:07,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 537 transitions, 6905 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:07,795 INFO L231 Difference]: Finished difference. Result has 565 places, 525 transitions, 5576 flow [2024-06-27 23:26:07,795 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} [2024-06-27 23:26:07,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-27 23:26:07,796 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 525 transitions, 5576 flow [2024-06-27 23:26:07,796 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) [2024-06-27 23:26:07,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:07,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:07,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:26:07,796 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)] === [2024-06-27 23:26:07,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1524606733, now seen corresponding path program 18 times [2024-06-27 23:26:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:07,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428215273] [2024-06-27 23:26:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:09,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428215273] [2024-06-27 23:26:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428215273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:09,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969769735] [2024-06-27 23:26:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:09,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:09,809 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) [2024-06-27 23:26:09,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:09,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:09,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:10,751 INFO L124 PetriNetUnfolderBase]: 1136/1957 cut-off events. [2024-06-27 23:26:10,751 INFO L125 PetriNetUnfolderBase]: For 773672/773672 co-relation queries the response was YES. [2024-06-27 23:26:10,781 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. [2024-06-27 23:26:10,787 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 418 selfloop transitions, 124 changer transitions 0/544 dead transitions. [2024-06-27 23:26:10,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 544 transitions, 7566 flow [2024-06-27 23:26:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:10,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:10,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 23:26:10,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 23:26:10,788 INFO L175 Difference]: Start difference. First operand has 565 places, 525 transitions, 5576 flow. Second operand 12 states and 153 transitions. [2024-06-27 23:26:10,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 544 transitions, 7566 flow [2024-06-27 23:26:14,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 544 transitions, 7380 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 23:26:14,714 INFO L231 Difference]: Finished difference. Result has 570 places, 525 transitions, 5643 flow [2024-06-27 23:26:14,714 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} [2024-06-27 23:26:14,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 539 predicate places. [2024-06-27 23:26:14,714 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 525 transitions, 5643 flow [2024-06-27 23:26:14,714 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) [2024-06-27 23:26:14,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:14,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:14,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:26:14,715 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)] === [2024-06-27 23:26:14,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash 500959541, now seen corresponding path program 19 times [2024-06-27 23:26:14,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:14,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653226024] [2024-06-27 23:26:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:16,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653226024] [2024-06-27 23:26:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653226024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:16,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:16,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:16,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563716659] [2024-06-27 23:26:16,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:16,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:16,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:16,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:16,412 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) [2024-06-27 23:26:16,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:16,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:17,265 INFO L124 PetriNetUnfolderBase]: 1132/1951 cut-off events. [2024-06-27 23:26:17,265 INFO L125 PetriNetUnfolderBase]: For 738091/738091 co-relation queries the response was YES. [2024-06-27 23:26:17,288 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. [2024-06-27 23:26:17,293 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 421 selfloop transitions, 122 changer transitions 0/545 dead transitions. [2024-06-27 23:26:17,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 545 transitions, 7647 flow [2024-06-27 23:26:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-27 23:26:17,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-27 23:26:17,295 INFO L175 Difference]: Start difference. First operand has 570 places, 525 transitions, 5643 flow. Second operand 12 states and 155 transitions. [2024-06-27 23:26:17,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 545 transitions, 7647 flow [2024-06-27 23:26:21,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 545 transitions, 7262 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-27 23:26:21,068 INFO L231 Difference]: Finished difference. Result has 569 places, 525 transitions, 5507 flow [2024-06-27 23:26:21,069 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} [2024-06-27 23:26:21,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-27 23:26:21,069 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 525 transitions, 5507 flow [2024-06-27 23:26:21,069 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) [2024-06-27 23:26:21,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:21,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:21,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:26:21,069 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)] === [2024-06-27 23:26:21,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1524369397, now seen corresponding path program 14 times [2024-06-27 23:26:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504909548] [2024-06-27 23:26:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504909548] [2024-06-27 23:26:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504909548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:22,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:22,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976170969] [2024-06-27 23:26:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:22,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:22,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:22,897 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) [2024-06-27 23:26:22,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:22,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:23,594 INFO L124 PetriNetUnfolderBase]: 1135/1956 cut-off events. [2024-06-27 23:26:23,594 INFO L125 PetriNetUnfolderBase]: For 722292/722292 co-relation queries the response was YES. [2024-06-27 23:26:23,624 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. [2024-06-27 23:26:23,644 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 460 selfloop transitions, 76 changer transitions 0/538 dead transitions. [2024-06-27 23:26:23,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 538 transitions, 6653 flow [2024-06-27 23:26:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:26:23,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 23:26:23,653 INFO L175 Difference]: Start difference. First operand has 569 places, 525 transitions, 5507 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:26:23,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 538 transitions, 6653 flow [2024-06-27 23:26:27,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 538 transitions, 6402 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:27,630 INFO L231 Difference]: Finished difference. Result has 570 places, 527 transitions, 5465 flow [2024-06-27 23:26:27,630 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} [2024-06-27 23:26:27,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 539 predicate places. [2024-06-27 23:26:27,630 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 527 transitions, 5465 flow [2024-06-27 23:26:27,630 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) [2024-06-27 23:26:27,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:27,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:27,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:26:27,631 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)] === [2024-06-27 23:26:27,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1517940307, now seen corresponding path program 15 times [2024-06-27 23:26:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:27,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672130147] [2024-06-27 23:26:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:29,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:29,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672130147] [2024-06-27 23:26:29,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672130147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:29,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:29,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:29,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944494794] [2024-06-27 23:26:29,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:29,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:29,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:29,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:29,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:29,341 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) [2024-06-27 23:26:29,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:29,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:29,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:30,060 INFO L124 PetriNetUnfolderBase]: 1133/1953 cut-off events. [2024-06-27 23:26:30,060 INFO L125 PetriNetUnfolderBase]: For 706672/706672 co-relation queries the response was YES. [2024-06-27 23:26:30,088 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. [2024-06-27 23:26:30,093 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 457 selfloop transitions, 79 changer transitions 0/538 dead transitions. [2024-06-27 23:26:30,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 538 transitions, 6563 flow [2024-06-27 23:26:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:26:30,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 23:26:30,095 INFO L175 Difference]: Start difference. First operand has 570 places, 527 transitions, 5465 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:26:30,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 538 transitions, 6563 flow [2024-06-27 23:26:33,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 538 transitions, 6344 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:33,901 INFO L231 Difference]: Finished difference. Result has 571 places, 527 transitions, 5409 flow [2024-06-27 23:26:33,901 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} [2024-06-27 23:26:33,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 540 predicate places. [2024-06-27 23:26:33,902 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 5409 flow [2024-06-27 23:26:33,902 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) [2024-06-27 23:26:33,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:33,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:33,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:26:33,902 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)] === [2024-06-27 23:26:33,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1517935533, now seen corresponding path program 6 times [2024-06-27 23:26:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:33,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710217932] [2024-06-27 23:26:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:33,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:35,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:35,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710217932] [2024-06-27 23:26:35,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710217932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:35,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:35,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:35,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247046396] [2024-06-27 23:26:35,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:35,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:35,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:35,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:35,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:35,810 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) [2024-06-27 23:26:35,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:35,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:35,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:36,625 INFO L124 PetriNetUnfolderBase]: 1137/1961 cut-off events. [2024-06-27 23:26:36,625 INFO L125 PetriNetUnfolderBase]: For 735679/735679 co-relation queries the response was YES. [2024-06-27 23:26:36,655 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. [2024-06-27 23:26:36,662 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 501 selfloop transitions, 37 changer transitions 0/540 dead transitions. [2024-06-27 23:26:36,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 540 transitions, 6543 flow [2024-06-27 23:26:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 23:26:36,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-27 23:26:36,663 INFO L175 Difference]: Start difference. First operand has 571 places, 527 transitions, 5409 flow. Second operand 12 states and 131 transitions. [2024-06-27 23:26:36,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 540 transitions, 6543 flow [2024-06-27 23:26:40,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 540 transitions, 6359 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:40,572 INFO L231 Difference]: Finished difference. Result has 573 places, 528 transitions, 5335 flow [2024-06-27 23:26:40,572 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} [2024-06-27 23:26:40,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 542 predicate places. [2024-06-27 23:26:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 528 transitions, 5335 flow [2024-06-27 23:26:40,573 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) [2024-06-27 23:26:40,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:40,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:40,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:26:40,573 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)] === [2024-06-27 23:26:40,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1517940493, now seen corresponding path program 20 times [2024-06-27 23:26:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810549166] [2024-06-27 23:26:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:42,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:42,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810549166] [2024-06-27 23:26:42,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810549166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:42,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:42,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:42,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880894912] [2024-06-27 23:26:42,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:42,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:42,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:42,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:42,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:42,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:42,118 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) [2024-06-27 23:26:42,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:42,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:42,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:42,917 INFO L124 PetriNetUnfolderBase]: 1133/1955 cut-off events. [2024-06-27 23:26:42,917 INFO L125 PetriNetUnfolderBase]: For 697721/697721 co-relation queries the response was YES. [2024-06-27 23:26:42,947 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. [2024-06-27 23:26:42,953 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 413 selfloop transitions, 131 changer transitions 0/546 dead transitions. [2024-06-27 23:26:42,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 546 transitions, 6923 flow [2024-06-27 23:26:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 23:26:42,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:26:42,955 INFO L175 Difference]: Start difference. First operand has 573 places, 528 transitions, 5335 flow. Second operand 12 states and 150 transitions. [2024-06-27 23:26:42,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 546 transitions, 6923 flow [2024-06-27 23:26:46,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 546 transitions, 6803 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:46,803 INFO L231 Difference]: Finished difference. Result has 575 places, 528 transitions, 5482 flow [2024-06-27 23:26:46,804 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} [2024-06-27 23:26:46,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-27 23:26:46,804 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 528 transitions, 5482 flow [2024-06-27 23:26:46,804 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) [2024-06-27 23:26:46,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:46,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:46,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:26:46,805 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)] === [2024-06-27 23:26:46,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:46,805 INFO L85 PathProgramCache]: Analyzing trace with hash 624421067, now seen corresponding path program 7 times [2024-06-27 23:26:46,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:46,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662218603] [2024-06-27 23:26:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:46,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662218603] [2024-06-27 23:26:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662218603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195684221] [2024-06-27 23:26:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:48,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:48,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:48,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:48,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:48,820 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) [2024-06-27 23:26:48,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:48,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:48,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:49,595 INFO L124 PetriNetUnfolderBase]: 1137/1963 cut-off events. [2024-06-27 23:26:49,595 INFO L125 PetriNetUnfolderBase]: For 704346/704346 co-relation queries the response was YES. [2024-06-27 23:26:49,626 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. [2024-06-27 23:26:49,633 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 519 selfloop transitions, 19 changer transitions 0/540 dead transitions. [2024-06-27 23:26:49,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 540 transitions, 6614 flow [2024-06-27 23:26:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-27 23:26:49,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-27 23:26:49,634 INFO L175 Difference]: Start difference. First operand has 575 places, 528 transitions, 5482 flow. Second operand 12 states and 122 transitions. [2024-06-27 23:26:49,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 540 transitions, 6614 flow [2024-06-27 23:26:53,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 540 transitions, 6334 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 23:26:53,658 INFO L231 Difference]: Finished difference. Result has 575 places, 529 transitions, 5278 flow [2024-06-27 23:26:53,658 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} [2024-06-27 23:26:53,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-27 23:26:53,659 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 529 transitions, 5278 flow [2024-06-27 23:26:53,659 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) [2024-06-27 23:26:53,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:53,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:53,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:26:53,659 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)] === [2024-06-27 23:26:53,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1382484917, now seen corresponding path program 21 times [2024-06-27 23:26:53,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:53,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873159153] [2024-06-27 23:26:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:55,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:55,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873159153] [2024-06-27 23:26:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873159153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:55,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:55,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737494117] [2024-06-27 23:26:55,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:55,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:55,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:26:55,340 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) [2024-06-27 23:26:55,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:55,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:26:55,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:56,259 INFO L124 PetriNetUnfolderBase]: 1173/2021 cut-off events. [2024-06-27 23:26:56,259 INFO L125 PetriNetUnfolderBase]: For 848350/848350 co-relation queries the response was YES. [2024-06-27 23:26:56,293 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. [2024-06-27 23:26:56,299 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 497 selfloop transitions, 59 changer transitions 0/558 dead transitions. [2024-06-27 23:26:56,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 558 transitions, 8345 flow [2024-06-27 23:26:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 23:26:56,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 23:26:56,300 INFO L175 Difference]: Start difference. First operand has 575 places, 529 transitions, 5278 flow. Second operand 12 states and 147 transitions. [2024-06-27 23:26:56,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 558 transitions, 8345 flow [2024-06-27 23:27:01,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 558 transitions, 8279 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:01,173 INFO L231 Difference]: Finished difference. Result has 577 places, 537 transitions, 5496 flow [2024-06-27 23:27:01,174 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} [2024-06-27 23:27:01,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-27 23:27:01,174 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 537 transitions, 5496 flow [2024-06-27 23:27:01,174 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) [2024-06-27 23:27:01,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:01,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:01,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:27:01,175 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)] === [2024-06-27 23:27:01,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1865428245, now seen corresponding path program 22 times [2024-06-27 23:27:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591122242] [2024-06-27 23:27:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:01,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:02,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:02,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591122242] [2024-06-27 23:27:02,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591122242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:02,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:02,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715735170] [2024-06-27 23:27:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:02,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:02,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:02,940 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) [2024-06-27 23:27:02,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:02,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:02,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:03,652 INFO L124 PetriNetUnfolderBase]: 1189/2047 cut-off events. [2024-06-27 23:27:03,653 INFO L125 PetriNetUnfolderBase]: For 903056/903056 co-relation queries the response was YES. [2024-06-27 23:27:03,685 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. [2024-06-27 23:27:03,692 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 519 selfloop transitions, 38 changer transitions 0/559 dead transitions. [2024-06-27 23:27:03,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 559 transitions, 7630 flow [2024-06-27 23:27:03,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 23:27:03,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 23:27:03,693 INFO L175 Difference]: Start difference. First operand has 577 places, 537 transitions, 5496 flow. Second operand 12 states and 135 transitions. [2024-06-27 23:27:03,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 559 transitions, 7630 flow [2024-06-27 23:27:08,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 559 transitions, 7482 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:08,880 INFO L231 Difference]: Finished difference. Result has 582 places, 541 transitions, 5517 flow [2024-06-27 23:27:08,880 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} [2024-06-27 23:27:08,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-27 23:27:08,881 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 541 transitions, 5517 flow [2024-06-27 23:27:08,881 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) [2024-06-27 23:27:08,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:08,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:08,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 23:27:08,881 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)] === [2024-06-27 23:27:08,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1261152607, now seen corresponding path program 23 times [2024-06-27 23:27:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311563488] [2024-06-27 23:27:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311563488] [2024-06-27 23:27:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311563488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:10,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:10,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:10,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184913448] [2024-06-27 23:27:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:10,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:10,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:10,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:10,612 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) [2024-06-27 23:27:10,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:10,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:10,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:11,454 INFO L124 PetriNetUnfolderBase]: 1195/2057 cut-off events. [2024-06-27 23:27:11,454 INFO L125 PetriNetUnfolderBase]: For 911013/911013 co-relation queries the response was YES. [2024-06-27 23:27:11,485 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. [2024-06-27 23:27:11,492 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 468 selfloop transitions, 93 changer transitions 0/563 dead transitions. [2024-06-27 23:27:11,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 563 transitions, 7623 flow [2024-06-27 23:27:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:27:11,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 23:27:11,493 INFO L175 Difference]: Start difference. First operand has 582 places, 541 transitions, 5517 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:27:11,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 563 transitions, 7623 flow [2024-06-27 23:27:16,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 563 transitions, 7510 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:16,435 INFO L231 Difference]: Finished difference. Result has 585 places, 543 transitions, 5633 flow [2024-06-27 23:27:16,435 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} [2024-06-27 23:27:16,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 554 predicate places. [2024-06-27 23:27:16,435 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 543 transitions, 5633 flow [2024-06-27 23:27:16,436 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) [2024-06-27 23:27:16,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:16,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:16,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 23:27:16,436 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)] === [2024-06-27 23:27:16,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1261152421, now seen corresponding path program 16 times [2024-06-27 23:27:16,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:16,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517073751] [2024-06-27 23:27:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:18,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:18,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517073751] [2024-06-27 23:27:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517073751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:18,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:27:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570890986] [2024-06-27 23:27:18,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:18,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:27:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:27:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:27:18,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:18,391 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) [2024-06-27 23:27:18,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:18,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:18,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:19,249 INFO L124 PetriNetUnfolderBase]: 1203/2070 cut-off events. [2024-06-27 23:27:19,249 INFO L125 PetriNetUnfolderBase]: For 919534/919534 co-relation queries the response was YES. [2024-06-27 23:27:19,279 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. [2024-06-27 23:27:19,285 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 505 selfloop transitions, 53 changer transitions 0/560 dead transitions. [2024-06-27 23:27:19,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 560 transitions, 7318 flow [2024-06-27 23:27:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:27:19,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-27 23:27:19,287 INFO L175 Difference]: Start difference. First operand has 585 places, 543 transitions, 5633 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:27:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 560 transitions, 7318 flow [2024-06-27 23:27:24,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 560 transitions, 6930 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:24,387 INFO L231 Difference]: Finished difference. Result has 588 places, 549 transitions, 5508 flow [2024-06-27 23:27:24,387 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} [2024-06-27 23:27:24,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 557 predicate places. [2024-06-27 23:27:24,388 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 549 transitions, 5508 flow [2024-06-27 23:27:24,388 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) [2024-06-27 23:27:24,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:24,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 23:27:24,388 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)] === [2024-06-27 23:27:24,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1261147771, now seen corresponding path program 17 times [2024-06-27 23:27:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:24,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252952803] [2024-06-27 23:27:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:26,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:26,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252952803] [2024-06-27 23:27:26,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252952803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:26,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:26,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442256459] [2024-06-27 23:27:26,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:26,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:26,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:26,138 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) [2024-06-27 23:27:26,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:26,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:26,820 INFO L124 PetriNetUnfolderBase]: 1211/2083 cut-off events. [2024-06-27 23:27:26,820 INFO L125 PetriNetUnfolderBase]: For 951268/951268 co-relation queries the response was YES. [2024-06-27 23:27:26,853 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. [2024-06-27 23:27:26,860 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 513 selfloop transitions, 49 changer transitions 0/564 dead transitions. [2024-06-27 23:27:26,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 564 transitions, 7228 flow [2024-06-27 23:27:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:27:26,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 23:27:26,862 INFO L175 Difference]: Start difference. First operand has 588 places, 549 transitions, 5508 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:27:26,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 564 transitions, 7228 flow [2024-06-27 23:27:32,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 564 transitions, 7106 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:32,568 INFO L231 Difference]: Finished difference. Result has 592 places, 553 transitions, 5629 flow [2024-06-27 23:27:32,569 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} [2024-06-27 23:27:32,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2024-06-27 23:27:32,569 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 553 transitions, 5629 flow [2024-06-27 23:27:32,569 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) [2024-06-27 23:27:32,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:32,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:32,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 23:27:32,570 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)] === [2024-06-27 23:27:32,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:32,570 INFO L85 PathProgramCache]: Analyzing trace with hash -968502881, now seen corresponding path program 24 times [2024-06-27 23:27:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:32,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643887078] [2024-06-27 23:27:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:32,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643887078] [2024-06-27 23:27:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643887078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:34,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:34,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756984591] [2024-06-27 23:27:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:34,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:34,150 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) [2024-06-27 23:27:34,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:34,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:34,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:35,012 INFO L124 PetriNetUnfolderBase]: 1207/2077 cut-off events. [2024-06-27 23:27:35,013 INFO L125 PetriNetUnfolderBase]: For 936166/936166 co-relation queries the response was YES. [2024-06-27 23:27:35,047 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. [2024-06-27 23:27:35,055 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 503 selfloop transitions, 69 changer transitions 0/574 dead transitions. [2024-06-27 23:27:35,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 574 transitions, 8620 flow [2024-06-27 23:27:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:27:35,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:27:35,056 INFO L175 Difference]: Start difference. First operand has 592 places, 553 transitions, 5629 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:27:35,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 574 transitions, 8620 flow [2024-06-27 23:27:40,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 574 transitions, 8458 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:40,482 INFO L231 Difference]: Finished difference. Result has 596 places, 553 transitions, 5610 flow [2024-06-27 23:27:40,483 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} [2024-06-27 23:27:40,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 565 predicate places. [2024-06-27 23:27:40,483 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 553 transitions, 5610 flow [2024-06-27 23:27:40,483 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) [2024-06-27 23:27:40,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:40,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:40,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 23:27:40,484 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)] === [2024-06-27 23:27:40,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1382478221, now seen corresponding path program 18 times [2024-06-27 23:27:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091750467] [2024-06-27 23:27:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:42,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091750467] [2024-06-27 23:27:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091750467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:42,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:27:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561720809] [2024-06-27 23:27:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:42,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:27:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:27:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:27:42,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:42,287 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) [2024-06-27 23:27:42,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:42,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:42,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:43,009 INFO L124 PetriNetUnfolderBase]: 1210/2082 cut-off events. [2024-06-27 23:27:43,009 INFO L125 PetriNetUnfolderBase]: For 919970/919970 co-relation queries the response was YES. [2024-06-27 23:27:43,044 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. [2024-06-27 23:27:43,051 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 525 selfloop transitions, 38 changer transitions 0/565 dead transitions. [2024-06-27 23:27:43,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 565 transitions, 6810 flow [2024-06-27 23:27:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:27:43,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-27 23:27:43,053 INFO L175 Difference]: Start difference. First operand has 596 places, 553 transitions, 5610 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:27:43,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 565 transitions, 6810 flow [2024-06-27 23:27:48,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 565 transitions, 6680 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:48,419 INFO L231 Difference]: Finished difference. Result has 599 places, 555 transitions, 5617 flow [2024-06-27 23:27:48,419 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} [2024-06-27 23:27:48,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 568 predicate places. [2024-06-27 23:27:48,419 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 555 transitions, 5617 flow [2024-06-27 23:27:48,419 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) [2024-06-27 23:27:48,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:48,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:48,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 23:27:48,420 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)] === [2024-06-27 23:27:48,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1391056355, now seen corresponding path program 6 times [2024-06-27 23:27:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:48,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361424620] [2024-06-27 23:27:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:51,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361424620] [2024-06-27 23:27:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361424620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:51,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:51,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:51,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673518320] [2024-06-27 23:27:51,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:51,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:51,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:51,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:51,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:51,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:51,403 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) [2024-06-27 23:27:51,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:51,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:51,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:52,147 INFO L124 PetriNetUnfolderBase]: 1214/2090 cut-off events. [2024-06-27 23:27:52,147 INFO L125 PetriNetUnfolderBase]: For 953019/953019 co-relation queries the response was YES. [2024-06-27 23:27:52,180 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. [2024-06-27 23:27:52,187 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 530 selfloop transitions, 39 changer transitions 0/571 dead transitions. [2024-06-27 23:27:52,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 571 transitions, 6835 flow [2024-06-27 23:27:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:27:52,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 23:27:52,189 INFO L175 Difference]: Start difference. First operand has 599 places, 555 transitions, 5617 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:27:52,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 571 transitions, 6835 flow [2024-06-27 23:27:57,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 571 transitions, 6718 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:57,616 INFO L231 Difference]: Finished difference. Result has 600 places, 556 transitions, 5602 flow [2024-06-27 23:27:57,616 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} [2024-06-27 23:27:57,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 569 predicate places. [2024-06-27 23:27:57,616 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 556 transitions, 5602 flow [2024-06-27 23:27:57,617 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) [2024-06-27 23:27:57,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:57,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:57,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 23:27:57,617 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)] === [2024-06-27 23:27:57,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1382724485, now seen corresponding path program 7 times [2024-06-27 23:27:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974600155] [2024-06-27 23:27:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974600155] [2024-06-27 23:27:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974600155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:59,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620440568] [2024-06-27 23:27:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:59,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:59,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:27:59,401 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) [2024-06-27 23:27:59,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:59,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:27:59,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:00,187 INFO L124 PetriNetUnfolderBase]: 1218/2098 cut-off events. [2024-06-27 23:28:00,187 INFO L125 PetriNetUnfolderBase]: For 961443/961443 co-relation queries the response was YES. [2024-06-27 23:28:00,218 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. [2024-06-27 23:28:00,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 532 selfloop transitions, 38 changer transitions 0/572 dead transitions. [2024-06-27 23:28:00,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 572 transitions, 6824 flow [2024-06-27 23:28:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:28:00,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 23:28:00,225 INFO L175 Difference]: Start difference. First operand has 600 places, 556 transitions, 5602 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:28:00,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 572 transitions, 6824 flow [2024-06-27 23:28:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 572 transitions, 6704 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:28:05,455 INFO L231 Difference]: Finished difference. Result has 602 places, 557 transitions, 5584 flow [2024-06-27 23:28:05,456 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} [2024-06-27 23:28:05,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 571 predicate places. [2024-06-27 23:28:05,456 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 557 transitions, 5584 flow [2024-06-27 23:28:05,457 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) [2024-06-27 23:28:05,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:05,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:05,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 23:28:05,458 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)] === [2024-06-27 23:28:05,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1382724175, now seen corresponding path program 1 times [2024-06-27 23:28:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:05,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723771941] [2024-06-27 23:28:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:07,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723771941] [2024-06-27 23:28:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723771941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:07,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:07,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339431575] [2024-06-27 23:28:07,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:07,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:28:07,344 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) [2024-06-27 23:28:07,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:07,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:28:07,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:08,331 INFO L124 PetriNetUnfolderBase]: 1216/2095 cut-off events. [2024-06-27 23:28:08,332 INFO L125 PetriNetUnfolderBase]: For 920667/920667 co-relation queries the response was YES. [2024-06-27 23:28:08,361 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. [2024-06-27 23:28:08,368 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 509 selfloop transitions, 59 changer transitions 0/570 dead transitions. [2024-06-27 23:28:08,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 570 transitions, 7218 flow [2024-06-27 23:28:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:28:08,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 23:28:08,369 INFO L175 Difference]: Start difference. First operand has 602 places, 557 transitions, 5584 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:28:08,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 570 transitions, 7218 flow [2024-06-27 23:28:13,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 570 transitions, 7114 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:28:13,758 INFO L231 Difference]: Finished difference. Result has 604 places, 557 transitions, 5605 flow [2024-06-27 23:28:13,758 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} [2024-06-27 23:28:13,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-27 23:28:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 557 transitions, 5605 flow [2024-06-27 23:28:13,759 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) [2024-06-27 23:28:13,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:13,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 23:28:13,759 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)] === [2024-06-27 23:28:13,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1154577257, now seen corresponding path program 25 times [2024-06-27 23:28:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134686556] [2024-06-27 23:28:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134686556] [2024-06-27 23:28:15,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134686556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:15,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:15,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348982883] [2024-06-27 23:28:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:15,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:15,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:28:15,362 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) [2024-06-27 23:28:15,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:15,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:28:15,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:16,233 INFO L124 PetriNetUnfolderBase]: 1232/2121 cut-off events. [2024-06-27 23:28:16,234 INFO L125 PetriNetUnfolderBase]: For 1003454/1003454 co-relation queries the response was YES. [2024-06-27 23:28:16,269 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. [2024-06-27 23:28:16,277 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 498 selfloop transitions, 82 changer transitions 0/582 dead transitions. [2024-06-27 23:28:16,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 582 transitions, 7826 flow [2024-06-27 23:28:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:28:16,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:28:16,278 INFO L175 Difference]: Start difference. First operand has 604 places, 557 transitions, 5605 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:28:16,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 582 transitions, 7826 flow [2024-06-27 23:28:21,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 582 transitions, 7693 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:28:21,779 INFO L231 Difference]: Finished difference. Result has 604 places, 561 transitions, 5709 flow [2024-06-27 23:28:21,779 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} [2024-06-27 23:28:21,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-27 23:28:21,779 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 561 transitions, 5709 flow [2024-06-27 23:28:21,779 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) [2024-06-27 23:28:21,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:21,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 23:28:21,780 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)] === [2024-06-27 23:28:21,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1160839877, now seen corresponding path program 26 times [2024-06-27 23:28:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26629162] [2024-06-27 23:28:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26629162] [2024-06-27 23:28:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26629162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:23,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651845047] [2024-06-27 23:28:23,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:23,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:28:23,448 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) [2024-06-27 23:28:23,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:23,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:28:23,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:24,409 INFO L124 PetriNetUnfolderBase]: 1248/2147 cut-off events. [2024-06-27 23:28:24,410 INFO L125 PetriNetUnfolderBase]: For 1054047/1054047 co-relation queries the response was YES. [2024-06-27 23:28:24,445 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. [2024-06-27 23:28:24,452 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 507 selfloop transitions, 77 changer transitions 0/586 dead transitions. [2024-06-27 23:28:24,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 586 transitions, 8836 flow [2024-06-27 23:28:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 23:28:24,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-27 23:28:24,453 INFO L175 Difference]: Start difference. First operand has 604 places, 561 transitions, 5709 flow. Second operand 12 states and 146 transitions. [2024-06-27 23:28:24,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 586 transitions, 8836 flow [2024-06-27 23:28:30,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 586 transitions, 8699 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:28:30,076 INFO L231 Difference]: Finished difference. Result has 609 places, 565 transitions, 5804 flow [2024-06-27 23:28:30,076 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} [2024-06-27 23:28:30,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-06-27 23:28:30,076 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 565 transitions, 5804 flow [2024-06-27 23:28:30,076 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) [2024-06-27 23:28:30,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:30,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 23:28:30,077 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)] === [2024-06-27 23:28:30,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1382715557, now seen corresponding path program 27 times [2024-06-27 23:28:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396424974] [2024-06-27 23:28:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:30,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396424974] [2024-06-27 23:28:31,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396424974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:31,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:31,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:31,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206200692] [2024-06-27 23:28:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:31,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:31,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:31,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:28:31,776 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) [2024-06-27 23:28:31,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:31,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:28:31,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:32,537 INFO L124 PetriNetUnfolderBase]: 1254/2157 cut-off events. [2024-06-27 23:28:32,537 INFO L125 PetriNetUnfolderBase]: For 1064325/1064325 co-relation queries the response was YES. [2024-06-27 23:28:32,572 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. [2024-06-27 23:28:32,578 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 508 selfloop transitions, 75 changer transitions 0/585 dead transitions. [2024-06-27 23:28:32,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 585 transitions, 8438 flow [2024-06-27 23:28:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 23:28:32,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 23:28:32,580 INFO L175 Difference]: Start difference. First operand has 609 places, 565 transitions, 5804 flow. Second operand 12 states and 147 transitions. [2024-06-27 23:28:32,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 585 transitions, 8438 flow [2024-06-27 23:28:38,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 585 transitions, 8201 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:38,428 INFO L231 Difference]: Finished difference. Result has 611 places, 567 transitions, 5763 flow [2024-06-27 23:28:38,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5573, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5763, PETRI_PLACES=611, PETRI_TRANSITIONS=567} [2024-06-27 23:28:38,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 580 predicate places. [2024-06-27 23:28:38,429 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 567 transitions, 5763 flow [2024-06-27 23:28:38,429 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) [2024-06-27 23:28:38,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:38,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 23:28:38,429 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:38,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1390759127, now seen corresponding path program 28 times [2024-06-27 23:28:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:38,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283353271] [2024-06-27 23:28:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:38,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:40,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:40,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283353271] [2024-06-27 23:28:40,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283353271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:40,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:40,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:40,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782138050] [2024-06-27 23:28:40,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:40,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-27 23:28:40,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 567 transitions, 5763 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) [2024-06-27 23:28:40,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:40,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-27 23:28:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:40,935 INFO L124 PetriNetUnfolderBase]: 1250/2151 cut-off events. [2024-06-27 23:28:40,935 INFO L125 PetriNetUnfolderBase]: For 1022123/1022123 co-relation queries the response was YES. [2024-06-27 23:28:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20495 conditions, 2151 events. 1250/2151 cut-off events. For 1022123/1022123 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 12517 event pairs, 220 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 20212. Up to 1817 conditions per place. [2024-06-27 23:28:40,983 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 503 selfloop transitions, 79 changer transitions 0/584 dead transitions. [2024-06-27 23:28:40,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 584 transitions, 7907 flow [2024-06-27 23:28:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 23:28:40,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-27 23:28:40,985 INFO L175 Difference]: Start difference. First operand has 611 places, 567 transitions, 5763 flow. Second operand 12 states and 142 transitions. [2024-06-27 23:28:40,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 584 transitions, 7907 flow [2024-06-27 23:28:46,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 584 transitions, 7729 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:28:46,567 INFO L231 Difference]: Finished difference. Result has 614 places, 567 transitions, 5748 flow [2024-06-27 23:28:46,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5585, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5748, PETRI_PLACES=614, PETRI_TRANSITIONS=567} [2024-06-27 23:28:46,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 583 predicate places. [2024-06-27 23:28:46,568 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 567 transitions, 5748 flow [2024-06-27 23:28:46,568 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) [2024-06-27 23:28:46,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:46,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 23:28:46,568 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:46,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1391066585, now seen corresponding path program 8 times [2024-06-27 23:28:46,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5257511] [2024-06-27 23:28:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15