./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_power.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/safe018_power.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/safe018_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe018_power.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 [2024-06-28 00:25:07,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:25:07,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:25:07,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:25:07,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:25:07,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:25:07,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:25:07,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:25:07,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:25:07,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:25:07,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:25:07,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:25:07,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:25:07,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:25:07,540 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:25:07,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:25:07,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:25:07,540 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:25:07,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:25:07,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:25:07,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:25:07,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:25:07,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:25:07,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:25:07,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:25:07,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:25:07,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:25:07,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:25:07,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:25:07,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:25:07,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:25:07,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:25:07,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:25:07,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:25:07,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:25:07,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:25:07,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:25:07,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:25:07,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:25:07,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:25:07,546 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:25:07,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:25:07,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:25:07,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:25:07,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:25:07,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:25:07,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:25:07,798 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:25:07,799 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:25:07,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe018_power.oepc.yml/witness.yml [2024-06-28 00:25:07,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:25:07,950 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:25:07,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i [2024-06-28 00:25:08,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:25:09,164 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:25:09,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_power.oepc.i [2024-06-28 00:25:09,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67e2714b/7a2937cb0fe4455bb81a8621f5aba487/FLAG61fcae819 [2024-06-28 00:25:09,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67e2714b/7a2937cb0fe4455bb81a8621f5aba487 [2024-06-28 00:25:09,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:25:09,189 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:25:09,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:25:09,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:25:09,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:25:09,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:25:07" (1/2) ... [2024-06-28 00:25:09,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d6e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:25:09, skipping insertion in model container [2024-06-28 00:25:09,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:25:07" (1/2) ... [2024-06-28 00:25:09,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@574dcccf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:25:09, skipping insertion in model container [2024-06-28 00:25:09,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:25:09" (2/2) ... [2024-06-28 00:25:09,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09, skipping insertion in model container [2024-06-28 00:25:09,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:25:09" (2/2) ... [2024-06-28 00:25:09,205 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:25:09,229 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:25:09,233 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-28 00:25:09,234 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-28 00:25:09,234 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-28 00:25:09,234 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:25:09,234 INFO L106 edCorrectnessWitness]: ghost_update [L833-L833] multithreaded = 1; [2024-06-28 00:25:09,279 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:25:09,548 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:25:09,565 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:25:09,725 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:25:09,755 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:25:09,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09 WrapperNode [2024-06-28 00:25:09,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:25:09,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:25:09,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:25:09,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:25:09,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,846 INFO L138 Inliner]: procedures = 175, calls = 59, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-06-28 00:25:09,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:25:09,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:25:09,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:25:09,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:25:09,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,912 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 00:25:09,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:25:09,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:25:09,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:25:09,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:25:09,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (1/1) ... [2024-06-28 00:25:09,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:25:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:25:10,015 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) [2024-06-28 00:25:10,050 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 [2024-06-28 00:25:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:25:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:25:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:25:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:25:10,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:25:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:25:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:25:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:25:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:25:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:25:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:25:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:25:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:25:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:25:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:25:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:25:10,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:25:10,080 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:25:10,222 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:25:10,224 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:25:10,697 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:25:10,697 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:25:10,970 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:25:10,971 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:25:10,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:25:10 BoogieIcfgContainer [2024-06-28 00:25:10,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:25:10,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:25:10,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:25:10,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:25:10,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:25:07" (1/4) ... [2024-06-28 00:25:10,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710e1e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:25:10, skipping insertion in model container [2024-06-28 00:25:10,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:25:09" (2/4) ... [2024-06-28 00:25:10,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710e1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:25:10, skipping insertion in model container [2024-06-28 00:25:10,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:25:09" (3/4) ... [2024-06-28 00:25:10,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710e1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:25:10, skipping insertion in model container [2024-06-28 00:25:10,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:25:10" (4/4) ... [2024-06-28 00:25:10,982 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_power.oepc.i [2024-06-28 00:25:10,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:25:10,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:25:10,998 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:25:11,055 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:25:11,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:25:11,112 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 00:25:11,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:25:11,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:25:11,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:25:11,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 00:25:11,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:25:11,183 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;@1e63974a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:25:11,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:25:11,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:25:11,192 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:25:11,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:25:11,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:11,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:25:11,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:11,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 599122186, now seen corresponding path program 1 times [2024-06-28 00:25:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:11,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477073933] [2024-06-28 00:25:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:11,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:13,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:13,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477073933] [2024-06-28 00:25:13,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477073933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:13,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:13,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:25:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027867264] [2024-06-28 00:25:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:13,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:25:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:25:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:25:13,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 00:25:13,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 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) [2024-06-28 00:25:13,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:13,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 00:25:13,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:13,565 INFO L124 PetriNetUnfolderBase]: 602/990 cut-off events. [2024-06-28 00:25:13,566 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-06-28 00:25:13,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 990 events. 602/990 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4666 event pairs, 367 based on Foata normal form. 1/968 useless extension candidates. Maximal degree in co-relation 1965. Up to 930 conditions per place. [2024-06-28 00:25:13,577 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 00:25:13,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 175 flow [2024-06-28 00:25:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:25:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:25:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 00:25:13,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 00:25:13,588 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 72 transitions. [2024-06-28 00:25:13,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 175 flow [2024-06-28 00:25:13,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:25:13,592 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 00:25:13,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 00:25:13,596 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 00:25:13,597 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 00:25:13,597 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) [2024-06-28 00:25:13,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:13,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:13,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:25:13,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:13,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash 231670063, now seen corresponding path program 1 times [2024-06-28 00:25:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:13,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369020008] [2024-06-28 00:25:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369020008] [2024-06-28 00:25:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369020008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:16,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:16,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:25:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660016772] [2024-06-28 00:25:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:16,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:25:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:25:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:25:16,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 00:25:16,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 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) [2024-06-28 00:25:16,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:16,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 00:25:16,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:17,258 INFO L124 PetriNetUnfolderBase]: 596/982 cut-off events. [2024-06-28 00:25:17,259 INFO L125 PetriNetUnfolderBase]: For 207/215 co-relation queries the response was YES. [2024-06-28 00:25:17,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 982 events. 596/982 cut-off events. For 207/215 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4645 event pairs, 277 based on Foata normal form. 6/987 useless extension candidates. Maximal degree in co-relation 2264. Up to 902 conditions per place. [2024-06-28 00:25:17,264 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 00:25:17,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 250 flow [2024-06-28 00:25:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:25:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:25:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 00:25:17,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792682926829268 [2024-06-28 00:25:17,265 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 95 transitions. [2024-06-28 00:25:17,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 250 flow [2024-06-28 00:25:17,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:25:17,267 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 00:25:17,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 00:25:17,268 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 00:25:17,268 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 00:25:17,269 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) [2024-06-28 00:25:17,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:17,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:25:17,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:17,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash -328577005, now seen corresponding path program 1 times [2024-06-28 00:25:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263737904] [2024-06-28 00:25:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263737904] [2024-06-28 00:25:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263737904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:25:20,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304583205] [2024-06-28 00:25:20,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:25:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:25:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:25:20,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 00:25:20,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 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) [2024-06-28 00:25:20,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:20,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 00:25:20,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:21,415 INFO L124 PetriNetUnfolderBase]: 754/1210 cut-off events. [2024-06-28 00:25:21,415 INFO L125 PetriNetUnfolderBase]: For 709/725 co-relation queries the response was YES. [2024-06-28 00:25:21,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1210 events. 754/1210 cut-off events. For 709/725 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5590 event pairs, 215 based on Foata normal form. 12/1221 useless extension candidates. Maximal degree in co-relation 3130. Up to 1079 conditions per place. [2024-06-28 00:25:21,423 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 56 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-28 00:25:21,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 374 flow [2024-06-28 00:25:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:25:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:25:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 00:25:21,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2024-06-28 00:25:21,429 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 6 states and 131 transitions. [2024-06-28 00:25:21,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 374 flow [2024-06-28 00:25:21,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 354 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 00:25:21,432 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 179 flow [2024-06-28 00:25:21,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 00:25:21,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 00:25:21,434 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 179 flow [2024-06-28 00:25:21,434 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) [2024-06-28 00:25:21,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:21,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:25:21,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:21,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1477432738, now seen corresponding path program 1 times [2024-06-28 00:25:21,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231368495] [2024-06-28 00:25:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:23,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231368495] [2024-06-28 00:25:23,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231368495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:25:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452740429] [2024-06-28 00:25:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:25:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:25:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:25:23,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:23,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:23,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:23,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:23,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:23,950 INFO L124 PetriNetUnfolderBase]: 863/1371 cut-off events. [2024-06-28 00:25:23,950 INFO L125 PetriNetUnfolderBase]: For 1467/1469 co-relation queries the response was YES. [2024-06-28 00:25:23,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 1371 events. 863/1371 cut-off events. For 1467/1469 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6373 event pairs, 316 based on Foata normal form. 6/1377 useless extension candidates. Maximal degree in co-relation 3892. Up to 1268 conditions per place. [2024-06-28 00:25:23,956 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 51 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-28 00:25:23,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 392 flow [2024-06-28 00:25:23,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:25:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:25:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-28 00:25:23,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-06-28 00:25:23,959 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 179 flow. Second operand 5 states and 92 transitions. [2024-06-28 00:25:23,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 392 flow [2024-06-28 00:25:23,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 357 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:25:23,964 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 238 flow [2024-06-28 00:25:23,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-06-28 00:25:23,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-28 00:25:23,966 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 238 flow [2024-06-28 00:25:23,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:23,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:23,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:23,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:25:23,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:23,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash -934682271, now seen corresponding path program 1 times [2024-06-28 00:25:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380506506] [2024-06-28 00:25:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:26,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:26,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380506506] [2024-06-28 00:25:26,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380506506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:26,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:26,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:25:26,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131828145] [2024-06-28 00:25:26,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:26,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:25:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:25:26,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:25:26,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:26,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:26,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:26,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:26,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:27,509 INFO L124 PetriNetUnfolderBase]: 847/1347 cut-off events. [2024-06-28 00:25:27,509 INFO L125 PetriNetUnfolderBase]: For 1965/1971 co-relation queries the response was YES. [2024-06-28 00:25:27,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4163 conditions, 1347 events. 847/1347 cut-off events. For 1965/1971 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6215 event pairs, 278 based on Foata normal form. 14/1361 useless extension candidates. Maximal degree in co-relation 4141. Up to 1188 conditions per place. [2024-06-28 00:25:27,518 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 58 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-28 00:25:27,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 458 flow [2024-06-28 00:25:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:25:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:25:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:25:27,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076655052264808 [2024-06-28 00:25:27,522 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 238 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:25:27,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 458 flow [2024-06-28 00:25:27,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 456 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:25:27,530 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 283 flow [2024-06-28 00:25:27,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-06-28 00:25:27,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-06-28 00:25:27,533 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 283 flow [2024-06-28 00:25:27,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:27,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:27,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:27,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:25:27,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:27,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1265478468, now seen corresponding path program 1 times [2024-06-28 00:25:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:27,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980982798] [2024-06-28 00:25:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:27,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980982798] [2024-06-28 00:25:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980982798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:30,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:30,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:25:30,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564364843] [2024-06-28 00:25:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:30,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:25:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:25:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:25:30,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:30,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-28 00:25:30,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:30,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:30,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:31,460 INFO L124 PetriNetUnfolderBase]: 945/1511 cut-off events. [2024-06-28 00:25:31,460 INFO L125 PetriNetUnfolderBase]: For 3004/3010 co-relation queries the response was YES. [2024-06-28 00:25:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4940 conditions, 1511 events. 945/1511 cut-off events. For 3004/3010 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7221 event pairs, 267 based on Foata normal form. 13/1524 useless extension candidates. Maximal degree in co-relation 4914. Up to 1303 conditions per place. [2024-06-28 00:25:31,469 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 64 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-06-28 00:25:31,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 652 flow [2024-06-28 00:25:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:25:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:25:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 00:25:31,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 00:25:31,471 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 283 flow. Second operand 9 states and 154 transitions. [2024-06-28 00:25:31,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 652 flow [2024-06-28 00:25:31,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 621 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:25:31,474 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 439 flow [2024-06-28 00:25:31,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=439, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 00:25:31,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 00:25:31,475 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 439 flow [2024-06-28 00:25:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-28 00:25:31,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:31,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:25:31,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1294197798, now seen corresponding path program 2 times [2024-06-28 00:25:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:31,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900331944] [2024-06-28 00:25:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:34,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900331944] [2024-06-28 00:25:34,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900331944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:34,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:25:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583930347] [2024-06-28 00:25:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:34,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:25:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:25:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:25:34,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:34,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 439 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-28 00:25:34,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:34,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:34,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:35,217 INFO L124 PetriNetUnfolderBase]: 958/1528 cut-off events. [2024-06-28 00:25:35,217 INFO L125 PetriNetUnfolderBase]: For 5112/5118 co-relation queries the response was YES. [2024-06-28 00:25:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5866 conditions, 1528 events. 958/1528 cut-off events. For 5112/5118 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7216 event pairs, 305 based on Foata normal form. 4/1532 useless extension candidates. Maximal degree in co-relation 5837. Up to 1342 conditions per place. [2024-06-28 00:25:35,230 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 76 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-06-28 00:25:35,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 826 flow [2024-06-28 00:25:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:25:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:25:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 00:25:35,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45934959349593496 [2024-06-28 00:25:35,232 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 439 flow. Second operand 6 states and 113 transitions. [2024-06-28 00:25:35,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 826 flow [2024-06-28 00:25:35,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 106 transitions, 804 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 00:25:35,239 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 609 flow [2024-06-28 00:25:35,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=609, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-06-28 00:25:35,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-28 00:25:35,240 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 609 flow [2024-06-28 00:25:35,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-28 00:25:35,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:35,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:35,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:25:35,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:35,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 739472720, now seen corresponding path program 3 times [2024-06-28 00:25:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157331780] [2024-06-28 00:25:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:37,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157331780] [2024-06-28 00:25:37,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157331780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:37,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:37,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:25:37,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429943130] [2024-06-28 00:25:37,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:37,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:25:37,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:25:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:25:37,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:37,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-28 00:25:37,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:37,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:37,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:38,210 INFO L124 PetriNetUnfolderBase]: 985/1581 cut-off events. [2024-06-28 00:25:38,211 INFO L125 PetriNetUnfolderBase]: For 7039/7045 co-relation queries the response was YES. [2024-06-28 00:25:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1581 events. 985/1581 cut-off events. For 7039/7045 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7569 event pairs, 294 based on Foata normal form. 19/1600 useless extension candidates. Maximal degree in co-relation 6481. Up to 1304 conditions per place. [2024-06-28 00:25:38,221 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 59 selfloop transitions, 45 changer transitions 0/109 dead transitions. [2024-06-28 00:25:38,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 933 flow [2024-06-28 00:25:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:25:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:25:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 00:25:38,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:25:38,223 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 609 flow. Second operand 7 states and 123 transitions. [2024-06-28 00:25:38,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 933 flow [2024-06-28 00:25:38,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 109 transitions, 897 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 00:25:38,232 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 786 flow [2024-06-28 00:25:38,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=786, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2024-06-28 00:25:38,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-28 00:25:38,233 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 786 flow [2024-06-28 00:25:38,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-28 00:25:38,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:38,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:38,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:25:38,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:38,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1075064549, now seen corresponding path program 1 times [2024-06-28 00:25:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210821616] [2024-06-28 00:25:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:38,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210821616] [2024-06-28 00:25:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210821616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:41,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:25:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015356105] [2024-06-28 00:25:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:41,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:25:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:25:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:25:41,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:41,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 786 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:41,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:41,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:41,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:43,610 INFO L124 PetriNetUnfolderBase]: 1574/2586 cut-off events. [2024-06-28 00:25:43,610 INFO L125 PetriNetUnfolderBase]: For 16397/16405 co-relation queries the response was YES. [2024-06-28 00:25:43,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 2586 events. 1574/2586 cut-off events. For 16397/16405 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14268 event pairs, 444 based on Foata normal form. 56/2642 useless extension candidates. Maximal degree in co-relation 11189. Up to 1374 conditions per place. [2024-06-28 00:25:43,634 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 107 selfloop transitions, 41 changer transitions 1/154 dead transitions. [2024-06-28 00:25:43,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 154 transitions, 1358 flow [2024-06-28 00:25:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:25:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:25:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 00:25:43,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44567627494456763 [2024-06-28 00:25:43,637 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 786 flow. Second operand 11 states and 201 transitions. [2024-06-28 00:25:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 154 transitions, 1358 flow [2024-06-28 00:25:43,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 154 transitions, 1278 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:25:43,660 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 849 flow [2024-06-28 00:25:43,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=849, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2024-06-28 00:25:43,661 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 00:25:43,661 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 849 flow [2024-06-28 00:25:43,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:43,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:43,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:25:43,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:43,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 649109347, now seen corresponding path program 2 times [2024-06-28 00:25:43,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:43,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814363279] [2024-06-28 00:25:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814363279] [2024-06-28 00:25:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814363279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:46,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:46,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:25:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441937727] [2024-06-28 00:25:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:25:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:25:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:25:46,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:46,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 849 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:46,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:46,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:46,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:48,388 INFO L124 PetriNetUnfolderBase]: 1459/2409 cut-off events. [2024-06-28 00:25:48,388 INFO L125 PetriNetUnfolderBase]: For 15286/15294 co-relation queries the response was YES. [2024-06-28 00:25:48,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10315 conditions, 2409 events. 1459/2409 cut-off events. For 15286/15294 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13264 event pairs, 472 based on Foata normal form. 66/2475 useless extension candidates. Maximal degree in co-relation 10275. Up to 1828 conditions per place. [2024-06-28 00:25:48,421 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 88 selfloop transitions, 33 changer transitions 11/137 dead transitions. [2024-06-28 00:25:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 137 transitions, 1262 flow [2024-06-28 00:25:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:25:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:25:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 00:25:48,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424390243902439 [2024-06-28 00:25:48,424 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 849 flow. Second operand 10 states and 174 transitions. [2024-06-28 00:25:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 137 transitions, 1262 flow [2024-06-28 00:25:48,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 137 transitions, 1204 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:25:48,441 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 827 flow [2024-06-28 00:25:48,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=827, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2024-06-28 00:25:48,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-28 00:25:48,443 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 827 flow [2024-06-28 00:25:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:48,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:48,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:48,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:25:48,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:48,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:48,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1816385595, now seen corresponding path program 3 times [2024-06-28 00:25:48,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:48,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701445142] [2024-06-28 00:25:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:48,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701445142] [2024-06-28 00:25:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701445142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:51,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:25:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601822322] [2024-06-28 00:25:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:51,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:25:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:51,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:25:51,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:25:51,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:51,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 827 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:51,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:51,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:51,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:52,837 INFO L124 PetriNetUnfolderBase]: 1374/2288 cut-off events. [2024-06-28 00:25:52,838 INFO L125 PetriNetUnfolderBase]: For 14357/14363 co-relation queries the response was YES. [2024-06-28 00:25:52,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10086 conditions, 2288 events. 1374/2288 cut-off events. For 14357/14363 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12429 event pairs, 466 based on Foata normal form. 18/2306 useless extension candidates. Maximal degree in co-relation 10044. Up to 1927 conditions per place. [2024-06-28 00:25:52,851 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 88 selfloop transitions, 29 changer transitions 0/122 dead transitions. [2024-06-28 00:25:52,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 1173 flow [2024-06-28 00:25:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:25:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:25:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:25:52,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-28 00:25:52,853 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 827 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:25:52,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 1173 flow [2024-06-28 00:25:52,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 1092 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:25:52,867 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 825 flow [2024-06-28 00:25:52,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=825, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-06-28 00:25:52,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-06-28 00:25:52,867 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 825 flow [2024-06-28 00:25:52,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:52,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:52,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:25:52,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:52,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash 764584967, now seen corresponding path program 1 times [2024-06-28 00:25:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671812153] [2024-06-28 00:25:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:52,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671812153] [2024-06-28 00:25:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671812153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:55,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:55,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:25:55,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230353847] [2024-06-28 00:25:55,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:55,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:25:55,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:55,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:25:55,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:25:55,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:55,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 825 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:55,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:55,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:55,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:57,055 INFO L124 PetriNetUnfolderBase]: 1538/2572 cut-off events. [2024-06-28 00:25:57,055 INFO L125 PetriNetUnfolderBase]: For 17365/17371 co-relation queries the response was YES. [2024-06-28 00:25:57,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 2572 events. 1538/2572 cut-off events. For 17365/17371 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14361 event pairs, 439 based on Foata normal form. 14/2586 useless extension candidates. Maximal degree in co-relation 11331. Up to 1809 conditions per place. [2024-06-28 00:25:57,072 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 94 selfloop transitions, 33 changer transitions 0/132 dead transitions. [2024-06-28 00:25:57,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 1287 flow [2024-06-28 00:25:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:25:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:25:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:25:57,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 00:25:57,074 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 825 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:25:57,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 1287 flow [2024-06-28 00:25:57,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 132 transitions, 1218 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:25:57,091 INFO L231 Difference]: Finished difference. Result has 92 places, 97 transitions, 894 flow [2024-06-28 00:25:57,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=894, PETRI_PLACES=92, PETRI_TRANSITIONS=97} [2024-06-28 00:25:57,092 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-28 00:25:57,092 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 97 transitions, 894 flow [2024-06-28 00:25:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:57,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:57,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:25:57,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:57,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1960869487, now seen corresponding path program 4 times [2024-06-28 00:25:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412604046] [2024-06-28 00:25:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:59,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412604046] [2024-06-28 00:25:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412604046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:59,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:59,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:25:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884476007] [2024-06-28 00:25:59,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:59,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:25:59,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:25:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:25:59,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:25:59,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 97 transitions, 894 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:25:59,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:59,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:25:59,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:01,102 INFO L124 PetriNetUnfolderBase]: 2262/3780 cut-off events. [2024-06-28 00:26:01,102 INFO L125 PetriNetUnfolderBase]: For 32625/32631 co-relation queries the response was YES. [2024-06-28 00:26:01,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16956 conditions, 3780 events. 2262/3780 cut-off events. For 32625/32631 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22899 event pairs, 537 based on Foata normal form. 62/3842 useless extension candidates. Maximal degree in co-relation 16913. Up to 1593 conditions per place. [2024-06-28 00:26:01,149 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 93 selfloop transitions, 57 changer transitions 1/156 dead transitions. [2024-06-28 00:26:01,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 156 transitions, 1530 flow [2024-06-28 00:26:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:26:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:26:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 00:26:01,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 00:26:01,165 INFO L175 Difference]: Start difference. First operand has 92 places, 97 transitions, 894 flow. Second operand 9 states and 175 transitions. [2024-06-28 00:26:01,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 156 transitions, 1530 flow [2024-06-28 00:26:01,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 1483 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:26:01,199 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 1125 flow [2024-06-28 00:26:01,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1125, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-06-28 00:26:01,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 00:26:01,201 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 1125 flow [2024-06-28 00:26:01,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:26:01,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:01,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:26:01,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:01,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1963726447, now seen corresponding path program 5 times [2024-06-28 00:26:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:01,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929320155] [2024-06-28 00:26:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:03,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929320155] [2024-06-28 00:26:03,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929320155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:03,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671970681] [2024-06-28 00:26:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:03,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:03,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:03,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:03,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 1125 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:26:03,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:03,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:03,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:05,092 INFO L124 PetriNetUnfolderBase]: 2091/3529 cut-off events. [2024-06-28 00:26:05,092 INFO L125 PetriNetUnfolderBase]: For 33661/33667 co-relation queries the response was YES. [2024-06-28 00:26:05,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16032 conditions, 3529 events. 2091/3529 cut-off events. For 33661/33667 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21434 event pairs, 647 based on Foata normal form. 84/3613 useless extension candidates. Maximal degree in co-relation 15986. Up to 2569 conditions per place. [2024-06-28 00:26:05,113 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 88 selfloop transitions, 45 changer transitions 2/140 dead transitions. [2024-06-28 00:26:05,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 1530 flow [2024-06-28 00:26:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:26:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:26:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 00:26:05,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 00:26:05,115 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 1125 flow. Second operand 8 states and 146 transitions. [2024-06-28 00:26:05,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 1530 flow [2024-06-28 00:26:05,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 140 transitions, 1406 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 00:26:05,159 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 1119 flow [2024-06-28 00:26:05,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=8, PETRI_FLOW=1119, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-06-28 00:26:05,160 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 00:26:05,160 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 1119 flow [2024-06-28 00:26:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:26:05,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:05,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:05,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:26:05,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:05,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash -308276207, now seen corresponding path program 6 times [2024-06-28 00:26:05,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:05,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882533857] [2024-06-28 00:26:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:05,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:06,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:06,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882533857] [2024-06-28 00:26:06,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882533857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:26:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787915260] [2024-06-28 00:26:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:26:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:26:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:26:07,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 00:26:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 1119 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:07,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:07,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 00:26:07,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:08,183 INFO L124 PetriNetUnfolderBase]: 1517/2846 cut-off events. [2024-06-28 00:26:08,183 INFO L125 PetriNetUnfolderBase]: For 27847/27923 co-relation queries the response was YES. [2024-06-28 00:26:08,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12407 conditions, 2846 events. 1517/2846 cut-off events. For 27847/27923 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19183 event pairs, 258 based on Foata normal form. 121/2850 useless extension candidates. Maximal degree in co-relation 12362. Up to 1071 conditions per place. [2024-06-28 00:26:08,197 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 54 selfloop transitions, 38 changer transitions 18/132 dead transitions. [2024-06-28 00:26:08,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 132 transitions, 1431 flow [2024-06-28 00:26:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:26:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:26:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 00:26:08,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 00:26:08,199 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 1119 flow. Second operand 7 states and 137 transitions. [2024-06-28 00:26:08,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 132 transitions, 1431 flow [2024-06-28 00:26:08,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 1347 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:26:08,228 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 1024 flow [2024-06-28 00:26:08,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1024, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2024-06-28 00:26:08,228 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 00:26:08,228 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 1024 flow [2024-06-28 00:26:08,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:08,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:08,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:08,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:26:08,229 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:08,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1094114985, now seen corresponding path program 2 times [2024-06-28 00:26:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:08,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911212347] [2024-06-28 00:26:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911212347] [2024-06-28 00:26:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911212347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:12,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:12,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536990966] [2024-06-28 00:26:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:12,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:12,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:12,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:12,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:12,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 1024 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:26:12,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:12,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:12,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:13,748 INFO L124 PetriNetUnfolderBase]: 1550/2608 cut-off events. [2024-06-28 00:26:13,748 INFO L125 PetriNetUnfolderBase]: For 22702/22708 co-relation queries the response was YES. [2024-06-28 00:26:13,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12330 conditions, 2608 events. 1550/2608 cut-off events. For 22702/22708 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14678 event pairs, 494 based on Foata normal form. 14/2622 useless extension candidates. Maximal degree in co-relation 12283. Up to 1753 conditions per place. [2024-06-28 00:26:13,762 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 91 selfloop transitions, 35 changer transitions 1/132 dead transitions. [2024-06-28 00:26:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1396 flow [2024-06-28 00:26:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:26:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:26:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:26:13,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 00:26:13,765 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 1024 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:26:13,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1396 flow [2024-06-28 00:26:13,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 132 transitions, 1312 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:26:13,790 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 987 flow [2024-06-28 00:26:13,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=987, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-06-28 00:26:13,791 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 00:26:13,791 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 987 flow [2024-06-28 00:26:13,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:26:13,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:13,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:26:13,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:13,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash 678071940, now seen corresponding path program 1 times [2024-06-28 00:26:13,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:13,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768391786] [2024-06-28 00:26:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768391786] [2024-06-28 00:26:16,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768391786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:16,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:16,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:26:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739917132] [2024-06-28 00:26:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:16,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:26:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:16,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:26:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:26:16,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:16,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 987 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:16,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:16,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:16,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:17,296 INFO L124 PetriNetUnfolderBase]: 1456/2455 cut-off events. [2024-06-28 00:26:17,297 INFO L125 PetriNetUnfolderBase]: For 19269/19276 co-relation queries the response was YES. [2024-06-28 00:26:17,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11455 conditions, 2455 events. 1456/2455 cut-off events. For 19269/19276 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14058 event pairs, 544 based on Foata normal form. 9/2464 useless extension candidates. Maximal degree in co-relation 11411. Up to 2243 conditions per place. [2024-06-28 00:26:17,309 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 88 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-28 00:26:17,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 118 transitions, 1381 flow [2024-06-28 00:26:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:26:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:26:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 00:26:17,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 00:26:17,311 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 987 flow. Second operand 6 states and 106 transitions. [2024-06-28 00:26:17,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 118 transitions, 1381 flow [2024-06-28 00:26:17,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 118 transitions, 1281 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:26:17,332 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 1052 flow [2024-06-28 00:26:17,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1052, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-06-28 00:26:17,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 00:26:17,332 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 1052 flow [2024-06-28 00:26:17,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:17,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:17,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:26:17,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:17,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash 406409470, now seen corresponding path program 1 times [2024-06-28 00:26:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870343385] [2024-06-28 00:26:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:21,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870343385] [2024-06-28 00:26:21,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870343385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:21,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:21,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:21,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642679622] [2024-06-28 00:26:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:21,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:21,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 00:26:21,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 1052 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:21,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:21,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 00:26:21,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:23,074 INFO L124 PetriNetUnfolderBase]: 1349/2332 cut-off events. [2024-06-28 00:26:23,074 INFO L125 PetriNetUnfolderBase]: For 17488/17490 co-relation queries the response was YES. [2024-06-28 00:26:23,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 2332 events. 1349/2332 cut-off events. For 17488/17490 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13514 event pairs, 412 based on Foata normal form. 8/2330 useless extension candidates. Maximal degree in co-relation 10705. Up to 2050 conditions per place. [2024-06-28 00:26:23,089 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 87 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-28 00:26:23,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 137 transitions, 1462 flow [2024-06-28 00:26:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:26:23,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:26:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:26:23,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 00:26:23,091 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 1052 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:26:23,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 137 transitions, 1462 flow [2024-06-28 00:26:23,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 137 transitions, 1450 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 00:26:23,115 INFO L231 Difference]: Finished difference. Result has 111 places, 113 transitions, 1236 flow [2024-06-28 00:26:23,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1236, PETRI_PLACES=111, PETRI_TRANSITIONS=113} [2024-06-28 00:26:23,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-06-28 00:26:23,116 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 113 transitions, 1236 flow [2024-06-28 00:26:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:23,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:23,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:23,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:26:23,116 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:23,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 53708190, now seen corresponding path program 1 times [2024-06-28 00:26:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:23,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879466154] [2024-06-28 00:26:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:23,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:26,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879466154] [2024-06-28 00:26:26,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879466154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:26:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600917833] [2024-06-28 00:26:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:26:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:26:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:26:26,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:26,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 1236 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:26,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:26,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:26,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:27,272 INFO L124 PetriNetUnfolderBase]: 1451/2444 cut-off events. [2024-06-28 00:26:27,273 INFO L125 PetriNetUnfolderBase]: For 23013/23013 co-relation queries the response was YES. [2024-06-28 00:26:27,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12037 conditions, 2444 events. 1451/2444 cut-off events. For 23013/23013 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14144 event pairs, 782 based on Foata normal form. 1/2436 useless extension candidates. Maximal degree in co-relation 11986. Up to 2274 conditions per place. [2024-06-28 00:26:27,289 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 117 selfloop transitions, 25 changer transitions 0/147 dead transitions. [2024-06-28 00:26:27,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 147 transitions, 1785 flow [2024-06-28 00:26:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:26:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:26:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 00:26:27,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:26:27,292 INFO L175 Difference]: Start difference. First operand has 111 places, 113 transitions, 1236 flow. Second operand 7 states and 119 transitions. [2024-06-28 00:26:27,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 147 transitions, 1785 flow [2024-06-28 00:26:27,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 147 transitions, 1727 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 00:26:27,321 INFO L231 Difference]: Finished difference. Result has 119 places, 128 transitions, 1449 flow [2024-06-28 00:26:27,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=119, PETRI_TRANSITIONS=128} [2024-06-28 00:26:27,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-28 00:26:27,321 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 128 transitions, 1449 flow [2024-06-28 00:26:27,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:27,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:27,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:27,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:26:27,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash -292464573, now seen corresponding path program 1 times [2024-06-28 00:26:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003305656] [2024-06-28 00:26:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:27,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003305656] [2024-06-28 00:26:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003305656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976200435] [2024-06-28 00:26:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:31,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:31,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 128 transitions, 1449 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2024-06-28 00:26:31,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:32,357 INFO L124 PetriNetUnfolderBase]: 1448/2445 cut-off events. [2024-06-28 00:26:32,357 INFO L125 PetriNetUnfolderBase]: For 23766/23770 co-relation queries the response was YES. [2024-06-28 00:26:32,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 2445 events. 1448/2445 cut-off events. For 23766/23770 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13800 event pairs, 444 based on Foata normal form. 2/2445 useless extension candidates. Maximal degree in co-relation 12366. Up to 2251 conditions per place. [2024-06-28 00:26:32,373 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 110 selfloop transitions, 26 changer transitions 0/141 dead transitions. [2024-06-28 00:26:32,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 141 transitions, 1770 flow [2024-06-28 00:26:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:26:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:26:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 00:26:32,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-28 00:26:32,375 INFO L175 Difference]: Start difference. First operand has 119 places, 128 transitions, 1449 flow. Second operand 8 states and 120 transitions. [2024-06-28 00:26:32,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 141 transitions, 1770 flow [2024-06-28 00:26:32,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 141 transitions, 1716 flow, removed 27 selfloop flow, removed 0 redundant places. [2024-06-28 00:26:32,406 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 1485 flow [2024-06-28 00:26:32,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1485, PETRI_PLACES=128, PETRI_TRANSITIONS=130} [2024-06-28 00:26:32,407 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-28 00:26:32,407 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 1485 flow [2024-06-28 00:26:32,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2024-06-28 00:26:32,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:32,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:32,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:26:32,408 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:32,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1320946399, now seen corresponding path program 1 times [2024-06-28 00:26:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022891618] [2024-06-28 00:26:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:35,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:35,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022891618] [2024-06-28 00:26:35,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022891618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:35,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:35,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:26:35,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076900817] [2024-06-28 00:26:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:35,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:26:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:26:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:26:35,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:35,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 1485 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:35,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:35,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:35,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:36,469 INFO L124 PetriNetUnfolderBase]: 1477/2487 cut-off events. [2024-06-28 00:26:36,469 INFO L125 PetriNetUnfolderBase]: For 27152/27157 co-relation queries the response was YES. [2024-06-28 00:26:36,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12792 conditions, 2487 events. 1477/2487 cut-off events. For 27152/27157 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14190 event pairs, 490 based on Foata normal form. 9/2496 useless extension candidates. Maximal degree in co-relation 12731. Up to 2159 conditions per place. [2024-06-28 00:26:36,487 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 115 selfloop transitions, 42 changer transitions 0/162 dead transitions. [2024-06-28 00:26:36,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 162 transitions, 2006 flow [2024-06-28 00:26:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:26:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:26:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:26:36,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-28 00:26:36,488 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 1485 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:26:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 162 transitions, 2006 flow [2024-06-28 00:26:36,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 162 transitions, 1915 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:26:36,523 INFO L231 Difference]: Finished difference. Result has 130 places, 138 transitions, 1609 flow [2024-06-28 00:26:36,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1609, PETRI_PLACES=130, PETRI_TRANSITIONS=138} [2024-06-28 00:26:36,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 00:26:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 138 transitions, 1609 flow [2024-06-28 00:26:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:36,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:36,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:36,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:26:36,525 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:36,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1662153639, now seen corresponding path program 2 times [2024-06-28 00:26:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001968111] [2024-06-28 00:26:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:39,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:39,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001968111] [2024-06-28 00:26:39,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001968111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:39,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:39,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:26:39,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479665434] [2024-06-28 00:26:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:26:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:26:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:26:39,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:39,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 138 transitions, 1609 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:39,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:39,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:39,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:40,880 INFO L124 PetriNetUnfolderBase]: 1480/2495 cut-off events. [2024-06-28 00:26:40,880 INFO L125 PetriNetUnfolderBase]: For 29281/29286 co-relation queries the response was YES. [2024-06-28 00:26:40,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13221 conditions, 2495 events. 1480/2495 cut-off events. For 29281/29286 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14327 event pairs, 570 based on Foata normal form. 9/2504 useless extension candidates. Maximal degree in co-relation 13158. Up to 2270 conditions per place. [2024-06-28 00:26:40,896 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 118 selfloop transitions, 35 changer transitions 0/158 dead transitions. [2024-06-28 00:26:40,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 158 transitions, 2004 flow [2024-06-28 00:26:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:26:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:26:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 00:26:40,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-28 00:26:40,898 INFO L175 Difference]: Start difference. First operand has 130 places, 138 transitions, 1609 flow. Second operand 7 states and 118 transitions. [2024-06-28 00:26:40,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 158 transitions, 2004 flow [2024-06-28 00:26:40,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 158 transitions, 1947 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 00:26:40,941 INFO L231 Difference]: Finished difference. Result has 135 places, 140 transitions, 1663 flow [2024-06-28 00:26:40,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1663, PETRI_PLACES=135, PETRI_TRANSITIONS=140} [2024-06-28 00:26:40,942 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 00:26:40,942 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 140 transitions, 1663 flow [2024-06-28 00:26:40,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:40,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:40,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:40,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:26:40,942 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:40,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1664955109, now seen corresponding path program 1 times [2024-06-28 00:26:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:40,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040363065] [2024-06-28 00:26:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:40,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:44,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040363065] [2024-06-28 00:26:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040363065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:44,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:44,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925463193] [2024-06-28 00:26:44,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:44,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:44,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:44,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 140 transitions, 1663 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) [2024-06-28 00:26:44,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:44,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:44,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:46,048 INFO L124 PetriNetUnfolderBase]: 1477/2477 cut-off events. [2024-06-28 00:26:46,049 INFO L125 PetriNetUnfolderBase]: For 31658/31658 co-relation queries the response was YES. [2024-06-28 00:26:46,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 2477 events. 1477/2477 cut-off events. For 31658/31658 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14327 event pairs, 786 based on Foata normal form. 1/2469 useless extension candidates. Maximal degree in co-relation 13213. Up to 2315 conditions per place. [2024-06-28 00:26:46,066 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 128 selfloop transitions, 26 changer transitions 0/159 dead transitions. [2024-06-28 00:26:46,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 159 transitions, 2042 flow [2024-06-28 00:26:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:26:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:26:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 00:26:46,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-28 00:26:46,069 INFO L175 Difference]: Start difference. First operand has 135 places, 140 transitions, 1663 flow. Second operand 7 states and 118 transitions. [2024-06-28 00:26:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 159 transitions, 2042 flow [2024-06-28 00:26:46,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 159 transitions, 1899 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 00:26:46,111 INFO L231 Difference]: Finished difference. Result has 136 places, 141 transitions, 1594 flow [2024-06-28 00:26:46,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=136, PETRI_TRANSITIONS=141} [2024-06-28 00:26:46,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 00:26:46,111 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 141 transitions, 1594 flow [2024-06-28 00:26:46,112 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) [2024-06-28 00:26:46,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:46,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:46,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:26:46,112 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:46,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:46,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2082056624, now seen corresponding path program 1 times [2024-06-28 00:26:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143782806] [2024-06-28 00:26:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:48,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:48,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143782806] [2024-06-28 00:26:48,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143782806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:48,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:48,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:48,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013474594] [2024-06-28 00:26:48,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:48,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:48,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:48,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:48,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 141 transitions, 1594 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) [2024-06-28 00:26:48,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:48,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:48,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:50,095 INFO L124 PetriNetUnfolderBase]: 1507/2529 cut-off events. [2024-06-28 00:26:50,095 INFO L125 PetriNetUnfolderBase]: For 32110/32114 co-relation queries the response was YES. [2024-06-28 00:26:50,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 2529 events. 1507/2529 cut-off events. For 32110/32114 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14310 event pairs, 425 based on Foata normal form. 6/2535 useless extension candidates. Maximal degree in co-relation 13449. Up to 2235 conditions per place. [2024-06-28 00:26:50,114 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 106 selfloop transitions, 56 changer transitions 0/167 dead transitions. [2024-06-28 00:26:50,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 167 transitions, 2071 flow [2024-06-28 00:26:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:26:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:26:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 00:26:50,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 00:26:50,115 INFO L175 Difference]: Start difference. First operand has 136 places, 141 transitions, 1594 flow. Second operand 7 states and 126 transitions. [2024-06-28 00:26:50,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 167 transitions, 2071 flow [2024-06-28 00:26:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 167 transitions, 2017 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:26:50,158 INFO L231 Difference]: Finished difference. Result has 139 places, 147 transitions, 1756 flow [2024-06-28 00:26:50,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1756, PETRI_PLACES=139, PETRI_TRANSITIONS=147} [2024-06-28 00:26:50,159 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-28 00:26:50,159 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 147 transitions, 1756 flow [2024-06-28 00:26:50,159 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) [2024-06-28 00:26:50,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:50,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:50,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:26:50,159 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:50,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash 680880586, now seen corresponding path program 2 times [2024-06-28 00:26:50,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786733174] [2024-06-28 00:26:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:53,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:53,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786733174] [2024-06-28 00:26:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786733174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:53,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:53,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915353060] [2024-06-28 00:26:53,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:53,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:53,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:53,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 147 transitions, 1756 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) [2024-06-28 00:26:53,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:53,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:53,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:55,436 INFO L124 PetriNetUnfolderBase]: 1554/2602 cut-off events. [2024-06-28 00:26:55,437 INFO L125 PetriNetUnfolderBase]: For 36792/36796 co-relation queries the response was YES. [2024-06-28 00:26:55,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14669 conditions, 2602 events. 1554/2602 cut-off events. For 36792/36796 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14749 event pairs, 425 based on Foata normal form. 4/2606 useless extension candidates. Maximal degree in co-relation 14602. Up to 2210 conditions per place. [2024-06-28 00:26:55,455 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 110 selfloop transitions, 81 changer transitions 0/196 dead transitions. [2024-06-28 00:26:55,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 196 transitions, 2632 flow [2024-06-28 00:26:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:26:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:26:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 00:26:55,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035476718403548 [2024-06-28 00:26:55,457 INFO L175 Difference]: Start difference. First operand has 139 places, 147 transitions, 1756 flow. Second operand 11 states and 182 transitions. [2024-06-28 00:26:55,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 196 transitions, 2632 flow [2024-06-28 00:26:55,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 196 transitions, 2487 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:26:55,505 INFO L231 Difference]: Finished difference. Result has 147 places, 166 transitions, 2095 flow [2024-06-28 00:26:55,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2095, PETRI_PLACES=147, PETRI_TRANSITIONS=166} [2024-06-28 00:26:55,505 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 00:26:55,505 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 166 transitions, 2095 flow [2024-06-28 00:26:55,506 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) [2024-06-28 00:26:55,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:55,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:26:55,506 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:55,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 681149356, now seen corresponding path program 3 times [2024-06-28 00:26:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76869680] [2024-06-28 00:26:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:58,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76869680] [2024-06-28 00:26:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76869680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:58,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:58,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:26:58,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801738748] [2024-06-28 00:26:58,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:58,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:26:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:26:58,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:26:58,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:26:58,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 2095 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) [2024-06-28 00:26:58,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:58,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:26:58,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:00,773 INFO L124 PetriNetUnfolderBase]: 1589/2659 cut-off events. [2024-06-28 00:27:00,773 INFO L125 PetriNetUnfolderBase]: For 44163/44167 co-relation queries the response was YES. [2024-06-28 00:27:00,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15782 conditions, 2659 events. 1589/2659 cut-off events. For 44163/44167 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15096 event pairs, 429 based on Foata normal form. 4/2663 useless extension candidates. Maximal degree in co-relation 15711. Up to 2238 conditions per place. [2024-06-28 00:27:00,793 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 107 selfloop transitions, 89 changer transitions 0/201 dead transitions. [2024-06-28 00:27:00,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 201 transitions, 2862 flow [2024-06-28 00:27:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:27:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:27:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 00:27:00,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401330376940133 [2024-06-28 00:27:00,795 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 2095 flow. Second operand 11 states and 181 transitions. [2024-06-28 00:27:00,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 201 transitions, 2862 flow [2024-06-28 00:27:00,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 201 transitions, 2649 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-06-28 00:27:00,872 INFO L231 Difference]: Finished difference. Result has 156 places, 175 transitions, 2247 flow [2024-06-28 00:27:00,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2247, PETRI_PLACES=156, PETRI_TRANSITIONS=175} [2024-06-28 00:27:00,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-28 00:27:00,873 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 175 transitions, 2247 flow [2024-06-28 00:27:00,873 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) [2024-06-28 00:27:00,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:00,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:27:00,874 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:00,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1684065610, now seen corresponding path program 4 times [2024-06-28 00:27:00,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:00,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710373695] [2024-06-28 00:27:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:04,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:04,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710373695] [2024-06-28 00:27:04,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710373695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:04,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:04,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:27:04,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760864974] [2024-06-28 00:27:04,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:04,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:27:04,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:27:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:27:04,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:04,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 175 transitions, 2247 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) [2024-06-28 00:27:04,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:04,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:04,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:05,567 INFO L124 PetriNetUnfolderBase]: 1604/2680 cut-off events. [2024-06-28 00:27:05,567 INFO L125 PetriNetUnfolderBase]: For 47909/47913 co-relation queries the response was YES. [2024-06-28 00:27:05,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16058 conditions, 2680 events. 1604/2680 cut-off events. For 47909/47913 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15249 event pairs, 429 based on Foata normal form. 4/2682 useless extension candidates. Maximal degree in co-relation 15982. Up to 2430 conditions per place. [2024-06-28 00:27:05,585 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 152 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-28 00:27:05,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 196 transitions, 2759 flow [2024-06-28 00:27:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:27:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:27:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:27:05,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712737127371274 [2024-06-28 00:27:05,587 INFO L175 Difference]: Start difference. First operand has 156 places, 175 transitions, 2247 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:27:05,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 196 transitions, 2759 flow [2024-06-28 00:27:05,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 196 transitions, 2620 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 00:27:05,655 INFO L231 Difference]: Finished difference. Result has 161 places, 180 transitions, 2271 flow [2024-06-28 00:27:05,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=161, PETRI_TRANSITIONS=180} [2024-06-28 00:27:05,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-28 00:27:05,656 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 180 transitions, 2271 flow [2024-06-28 00:27:05,656 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) [2024-06-28 00:27:05,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:05,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:27:05,656 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:05,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1763914403, now seen corresponding path program 1 times [2024-06-28 00:27:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:05,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700481594] [2024-06-28 00:27:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:05,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700481594] [2024-06-28 00:27:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700481594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:10,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059487540] [2024-06-28 00:27:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:10,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:10,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 180 transitions, 2271 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:10,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:10,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:10,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:12,248 INFO L124 PetriNetUnfolderBase]: 1622/2709 cut-off events. [2024-06-28 00:27:12,248 INFO L125 PetriNetUnfolderBase]: For 51321/51326 co-relation queries the response was YES. [2024-06-28 00:27:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16202 conditions, 2709 events. 1622/2709 cut-off events. For 51321/51326 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15596 event pairs, 576 based on Foata normal form. 6/2715 useless extension candidates. Maximal degree in co-relation 16124. Up to 2453 conditions per place. [2024-06-28 00:27:12,266 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 159 selfloop transitions, 51 changer transitions 0/215 dead transitions. [2024-06-28 00:27:12,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 215 transitions, 3009 flow [2024-06-28 00:27:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:12,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:27:12,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:27:12,268 INFO L175 Difference]: Start difference. First operand has 161 places, 180 transitions, 2271 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:27:12,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 215 transitions, 3009 flow [2024-06-28 00:27:12,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 215 transitions, 2913 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:27:12,344 INFO L231 Difference]: Finished difference. Result has 165 places, 190 transitions, 2431 flow [2024-06-28 00:27:12,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2431, PETRI_PLACES=165, PETRI_TRANSITIONS=190} [2024-06-28 00:27:12,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 00:27:12,345 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 190 transitions, 2431 flow [2024-06-28 00:27:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:12,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:27:12,346 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:12,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2088655523, now seen corresponding path program 2 times [2024-06-28 00:27:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739030102] [2024-06-28 00:27:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:17,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:17,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739030102] [2024-06-28 00:27:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739030102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:17,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205007985] [2024-06-28 00:27:17,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:17,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:17,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:17,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 190 transitions, 2431 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:17,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:17,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:17,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:19,208 INFO L124 PetriNetUnfolderBase]: 1617/2701 cut-off events. [2024-06-28 00:27:19,209 INFO L125 PetriNetUnfolderBase]: For 52853/52858 co-relation queries the response was YES. [2024-06-28 00:27:19,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16308 conditions, 2701 events. 1617/2701 cut-off events. For 52853/52858 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15550 event pairs, 576 based on Foata normal form. 6/2707 useless extension candidates. Maximal degree in co-relation 16229. Up to 2464 conditions per place. [2024-06-28 00:27:19,231 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 161 selfloop transitions, 45 changer transitions 0/211 dead transitions. [2024-06-28 00:27:19,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 211 transitions, 2989 flow [2024-06-28 00:27:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:27:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:27:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:27:19,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482384823848237 [2024-06-28 00:27:19,233 INFO L175 Difference]: Start difference. First operand has 165 places, 190 transitions, 2431 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:27:19,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 211 transitions, 2989 flow [2024-06-28 00:27:19,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 211 transitions, 2874 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 00:27:19,326 INFO L231 Difference]: Finished difference. Result has 171 places, 193 transitions, 2462 flow [2024-06-28 00:27:19,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2462, PETRI_PLACES=171, PETRI_TRANSITIONS=193} [2024-06-28 00:27:19,327 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-28 00:27:19,327 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 193 transitions, 2462 flow [2024-06-28 00:27:19,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:19,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:19,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:19,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:27:19,328 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:19,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2089041473, now seen corresponding path program 3 times [2024-06-28 00:27:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:19,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348947055] [2024-06-28 00:27:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:23,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348947055] [2024-06-28 00:27:23,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348947055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:23,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:23,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:23,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23224768] [2024-06-28 00:27:23,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:23,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:23,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:23,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 193 transitions, 2462 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:23,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:23,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:23,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:25,282 INFO L124 PetriNetUnfolderBase]: 1632/2728 cut-off events. [2024-06-28 00:27:25,282 INFO L125 PetriNetUnfolderBase]: For 56578/56583 co-relation queries the response was YES. [2024-06-28 00:27:25,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16574 conditions, 2728 events. 1632/2728 cut-off events. For 56578/56583 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15788 event pairs, 546 based on Foata normal form. 8/2736 useless extension candidates. Maximal degree in co-relation 16494. Up to 2390 conditions per place. [2024-06-28 00:27:25,307 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 156 selfloop transitions, 91 changer transitions 0/252 dead transitions. [2024-06-28 00:27:25,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 252 transitions, 3462 flow [2024-06-28 00:27:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:27:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:27:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 00:27:25,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:27:25,310 INFO L175 Difference]: Start difference. First operand has 171 places, 193 transitions, 2462 flow. Second operand 12 states and 204 transitions. [2024-06-28 00:27:25,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 252 transitions, 3462 flow [2024-06-28 00:27:25,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 252 transitions, 3372 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 00:27:25,404 INFO L231 Difference]: Finished difference. Result has 183 places, 213 transitions, 2898 flow [2024-06-28 00:27:25,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2898, PETRI_PLACES=183, PETRI_TRANSITIONS=213} [2024-06-28 00:27:25,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-06-28 00:27:25,405 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 213 transitions, 2898 flow [2024-06-28 00:27:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:25,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:25,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:25,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:27:25,406 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:25,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -282492163, now seen corresponding path program 4 times [2024-06-28 00:27:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:25,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140205145] [2024-06-28 00:27:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:29,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140205145] [2024-06-28 00:27:29,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140205145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:29,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739887222] [2024-06-28 00:27:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:29,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:29,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 213 transitions, 2898 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:29,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:29,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:29,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:32,790 INFO L124 PetriNetUnfolderBase]: 1683/2809 cut-off events. [2024-06-28 00:27:32,790 INFO L125 PetriNetUnfolderBase]: For 66702/66702 co-relation queries the response was YES. [2024-06-28 00:27:32,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18100 conditions, 2809 events. 1683/2809 cut-off events. For 66702/66702 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 16153 event pairs, 410 based on Foata normal form. 6/2813 useless extension candidates. Maximal degree in co-relation 18014. Up to 2481 conditions per place. [2024-06-28 00:27:32,817 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 187 selfloop transitions, 83 changer transitions 0/275 dead transitions. [2024-06-28 00:27:32,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 275 transitions, 4276 flow [2024-06-28 00:27:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 00:27:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 00:27:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 243 transitions. [2024-06-28 00:27:32,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704268292682927 [2024-06-28 00:27:32,819 INFO L175 Difference]: Start difference. First operand has 183 places, 213 transitions, 2898 flow. Second operand 16 states and 243 transitions. [2024-06-28 00:27:32,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 275 transitions, 4276 flow [2024-06-28 00:27:32,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 275 transitions, 4013 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-06-28 00:27:32,937 INFO L231 Difference]: Finished difference. Result has 196 places, 243 transitions, 3425 flow [2024-06-28 00:27:32,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3425, PETRI_PLACES=196, PETRI_TRANSITIONS=243} [2024-06-28 00:27:32,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 00:27:32,938 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 243 transitions, 3425 flow [2024-06-28 00:27:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:32,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:32,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:27:32,939 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:32,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1601130680, now seen corresponding path program 1 times [2024-06-28 00:27:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:32,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811613766] [2024-06-28 00:27:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:38,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811613766] [2024-06-28 00:27:38,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811613766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:38,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:38,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815484531] [2024-06-28 00:27:38,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:38,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:38,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:38,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:38,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 243 transitions, 3425 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:38,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:38,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:38,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:39,799 INFO L124 PetriNetUnfolderBase]: 1702/2836 cut-off events. [2024-06-28 00:27:39,799 INFO L125 PetriNetUnfolderBase]: For 75884/75884 co-relation queries the response was YES. [2024-06-28 00:27:39,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18941 conditions, 2836 events. 1702/2836 cut-off events. For 75884/75884 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16332 event pairs, 410 based on Foata normal form. 3/2837 useless extension candidates. Maximal degree in co-relation 18853. Up to 2497 conditions per place. [2024-06-28 00:27:39,825 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 185 selfloop transitions, 92 changer transitions 0/282 dead transitions. [2024-06-28 00:27:39,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 282 transitions, 4406 flow [2024-06-28 00:27:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:27:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:27:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 00:27:39,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:27:39,831 INFO L175 Difference]: Start difference. First operand has 196 places, 243 transitions, 3425 flow. Second operand 12 states and 195 transitions. [2024-06-28 00:27:39,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 282 transitions, 4406 flow [2024-06-28 00:27:39,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 282 transitions, 3982 flow, removed 187 selfloop flow, removed 9 redundant places. [2024-06-28 00:27:39,963 INFO L231 Difference]: Finished difference. Result has 199 places, 254 transitions, 3401 flow [2024-06-28 00:27:39,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3401, PETRI_PLACES=199, PETRI_TRANSITIONS=254} [2024-06-28 00:27:39,964 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-28 00:27:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 254 transitions, 3401 flow [2024-06-28 00:27:39,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:39,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:39,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:39,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:27:39,965 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:39,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1221168481, now seen corresponding path program 5 times [2024-06-28 00:27:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922742396] [2024-06-28 00:27:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922742396] [2024-06-28 00:27:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922742396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:44,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824181556] [2024-06-28 00:27:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:44,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:44,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 254 transitions, 3401 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:44,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:44,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:44,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:45,835 INFO L124 PetriNetUnfolderBase]: 1699/2824 cut-off events. [2024-06-28 00:27:45,835 INFO L125 PetriNetUnfolderBase]: For 75164/75168 co-relation queries the response was YES. [2024-06-28 00:27:45,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18659 conditions, 2824 events. 1699/2824 cut-off events. For 75164/75168 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16114 event pairs, 418 based on Foata normal form. 2/2824 useless extension candidates. Maximal degree in co-relation 18570. Up to 2598 conditions per place. [2024-06-28 00:27:45,856 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 231 selfloop transitions, 32 changer transitions 0/268 dead transitions. [2024-06-28 00:27:45,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 268 transitions, 4044 flow [2024-06-28 00:27:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:27:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:27:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 00:27:45,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36314363143631434 [2024-06-28 00:27:45,860 INFO L175 Difference]: Start difference. First operand has 199 places, 254 transitions, 3401 flow. Second operand 9 states and 134 transitions. [2024-06-28 00:27:45,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 268 transitions, 4044 flow [2024-06-28 00:27:45,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 268 transitions, 3870 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 00:27:45,990 INFO L231 Difference]: Finished difference. Result has 201 places, 255 transitions, 3316 flow [2024-06-28 00:27:45,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3316, PETRI_PLACES=201, PETRI_TRANSITIONS=255} [2024-06-28 00:27:45,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 00:27:45,991 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 255 transitions, 3316 flow [2024-06-28 00:27:45,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:45,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:45,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:45,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:27:45,991 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:45,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1221168822, now seen corresponding path program 5 times [2024-06-28 00:27:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716062607] [2024-06-28 00:27:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:50,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716062607] [2024-06-28 00:27:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716062607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335191447] [2024-06-28 00:27:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:51,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:51,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 255 transitions, 3316 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:51,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:51,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:51,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:51,982 INFO L124 PetriNetUnfolderBase]: 1696/2826 cut-off events. [2024-06-28 00:27:51,983 INFO L125 PetriNetUnfolderBase]: For 77509/77513 co-relation queries the response was YES. [2024-06-28 00:27:51,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18480 conditions, 2826 events. 1696/2826 cut-off events. For 77509/77513 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16166 event pairs, 415 based on Foata normal form. 2/2826 useless extension candidates. Maximal degree in co-relation 18390. Up to 2595 conditions per place. [2024-06-28 00:27:52,007 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 232 selfloop transitions, 31 changer transitions 0/268 dead transitions. [2024-06-28 00:27:52,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 268 transitions, 3882 flow [2024-06-28 00:27:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:27:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:27:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:27:52,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604336043360434 [2024-06-28 00:27:52,009 INFO L175 Difference]: Start difference. First operand has 201 places, 255 transitions, 3316 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:27:52,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 268 transitions, 3882 flow [2024-06-28 00:27:52,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 268 transitions, 3794 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:27:52,164 INFO L231 Difference]: Finished difference. Result has 204 places, 256 transitions, 3308 flow [2024-06-28 00:27:52,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3308, PETRI_PLACES=204, PETRI_TRANSITIONS=256} [2024-06-28 00:27:52,164 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-28 00:27:52,164 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 256 transitions, 3308 flow [2024-06-28 00:27:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:52,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:52,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:27:52,165 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:52,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2087020991, now seen corresponding path program 6 times [2024-06-28 00:27:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:52,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820249772] [2024-06-28 00:27:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:56,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:56,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820249772] [2024-06-28 00:27:56,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820249772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:56,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:56,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:56,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156786094] [2024-06-28 00:27:56,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:56,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:27:56,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 256 transitions, 3308 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:56,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:56,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:27:56,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:57,600 INFO L124 PetriNetUnfolderBase]: 1703/2834 cut-off events. [2024-06-28 00:27:57,600 INFO L125 PetriNetUnfolderBase]: For 80683/80683 co-relation queries the response was YES. [2024-06-28 00:27:57,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18612 conditions, 2834 events. 1703/2834 cut-off events. For 80683/80683 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16252 event pairs, 413 based on Foata normal form. 3/2835 useless extension candidates. Maximal degree in co-relation 18521. Up to 2499 conditions per place. [2024-06-28 00:27:57,626 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 190 selfloop transitions, 92 changer transitions 0/287 dead transitions. [2024-06-28 00:27:57,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 287 transitions, 4231 flow [2024-06-28 00:27:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:27:57,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 00:27:57,628 INFO L175 Difference]: Start difference. First operand has 204 places, 256 transitions, 3308 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:27:57,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 287 transitions, 4231 flow [2024-06-28 00:27:57,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 287 transitions, 4104 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:27:57,789 INFO L231 Difference]: Finished difference. Result has 208 places, 263 transitions, 3548 flow [2024-06-28 00:27:57,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=208, PETRI_TRANSITIONS=263} [2024-06-28 00:27:57,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-06-28 00:27:57,790 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 263 transitions, 3548 flow [2024-06-28 00:27:57,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:57,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:57,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:57,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:27:57,791 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:57,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1880538175, now seen corresponding path program 1 times [2024-06-28 00:27:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:57,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027454003] [2024-06-28 00:27:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027454003] [2024-06-28 00:28:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027454003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:03,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:03,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:28:03,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499821899] [2024-06-28 00:28:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:28:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:28:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:28:03,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 00:28:03,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 263 transitions, 3548 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:03,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:03,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 00:28:03,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:04,378 INFO L124 PetriNetUnfolderBase]: 1610/2729 cut-off events. [2024-06-28 00:28:04,378 INFO L125 PetriNetUnfolderBase]: For 87377/87403 co-relation queries the response was YES. [2024-06-28 00:28:04,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17983 conditions, 2729 events. 1610/2729 cut-off events. For 87377/87403 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16085 event pairs, 400 based on Foata normal form. 26/2744 useless extension candidates. Maximal degree in co-relation 17890. Up to 2304 conditions per place. [2024-06-28 00:28:04,403 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 209 selfloop transitions, 35 changer transitions 0/291 dead transitions. [2024-06-28 00:28:04,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 291 transitions, 4158 flow [2024-06-28 00:28:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:28:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:28:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 00:28:04,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:28:04,405 INFO L175 Difference]: Start difference. First operand has 208 places, 263 transitions, 3548 flow. Second operand 11 states and 176 transitions. [2024-06-28 00:28:04,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 291 transitions, 4158 flow [2024-06-28 00:28:04,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 291 transitions, 3972 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:28:04,571 INFO L231 Difference]: Finished difference. Result has 213 places, 264 transitions, 3459 flow [2024-06-28 00:28:04,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3459, PETRI_PLACES=213, PETRI_TRANSITIONS=264} [2024-06-28 00:28:04,572 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-28 00:28:04,572 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 264 transitions, 3459 flow [2024-06-28 00:28:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:04,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:04,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:04,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:28:04,573 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:04,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1013854245, now seen corresponding path program 2 times [2024-06-28 00:28:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068170606] [2024-06-28 00:28:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:09,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:09,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068170606] [2024-06-28 00:28:09,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068170606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:09,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:09,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:28:09,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753823357] [2024-06-28 00:28:09,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:09,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:28:09,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:09,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:28:09,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:28:10,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 00:28:10,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 264 transitions, 3459 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:10,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:10,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 00:28:10,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:11,408 INFO L124 PetriNetUnfolderBase]: 1594/2713 cut-off events. [2024-06-28 00:28:11,408 INFO L125 PetriNetUnfolderBase]: For 81891/81917 co-relation queries the response was YES. [2024-06-28 00:28:11,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17536 conditions, 2713 events. 1594/2713 cut-off events. For 81891/81917 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16008 event pairs, 372 based on Foata normal form. 22/2724 useless extension candidates. Maximal degree in co-relation 17442. Up to 2242 conditions per place. [2024-06-28 00:28:11,435 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 209 selfloop transitions, 38 changer transitions 0/294 dead transitions. [2024-06-28 00:28:11,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 294 transitions, 4081 flow [2024-06-28 00:28:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:28:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:28:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 00:28:11,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946784922394678 [2024-06-28 00:28:11,437 INFO L175 Difference]: Start difference. First operand has 213 places, 264 transitions, 3459 flow. Second operand 11 states and 178 transitions. [2024-06-28 00:28:11,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 294 transitions, 4081 flow [2024-06-28 00:28:11,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 294 transitions, 3996 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:28:11,607 INFO L231 Difference]: Finished difference. Result has 214 places, 264 transitions, 3454 flow [2024-06-28 00:28:11,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3454, PETRI_PLACES=214, PETRI_TRANSITIONS=264} [2024-06-28 00:28:11,608 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-28 00:28:11,608 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 264 transitions, 3454 flow [2024-06-28 00:28:11,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:11,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:11,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:11,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:28:11,609 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:11,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash -14717505, now seen corresponding path program 1 times [2024-06-28 00:28:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949188948] [2024-06-28 00:28:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949188948] [2024-06-28 00:28:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949188948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:15,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:28:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487714611] [2024-06-28 00:28:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:15,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:28:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:28:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:28:15,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:15,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 264 transitions, 3454 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) [2024-06-28 00:28:15,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:15,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:16,668 INFO L124 PetriNetUnfolderBase]: 1744/2886 cut-off events. [2024-06-28 00:28:16,669 INFO L125 PetriNetUnfolderBase]: For 88466/88466 co-relation queries the response was YES. [2024-06-28 00:28:16,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18990 conditions, 2886 events. 1744/2886 cut-off events. For 88466/88466 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16731 event pairs, 758 based on Foata normal form. 2/2879 useless extension candidates. Maximal degree in co-relation 18896. Up to 2481 conditions per place. [2024-06-28 00:28:16,694 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 256 selfloop transitions, 44 changer transitions 0/305 dead transitions. [2024-06-28 00:28:16,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 305 transitions, 4465 flow [2024-06-28 00:28:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 00:28:16,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 00:28:16,696 INFO L175 Difference]: Start difference. First operand has 214 places, 264 transitions, 3454 flow. Second operand 9 states and 150 transitions. [2024-06-28 00:28:16,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 305 transitions, 4465 flow [2024-06-28 00:28:16,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 305 transitions, 4392 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:28:16,881 INFO L231 Difference]: Finished difference. Result has 217 places, 269 transitions, 3570 flow [2024-06-28 00:28:16,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3381, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3570, PETRI_PLACES=217, PETRI_TRANSITIONS=269} [2024-06-28 00:28:16,882 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-28 00:28:16,882 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 269 transitions, 3570 flow [2024-06-28 00:28:16,882 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) [2024-06-28 00:28:16,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:16,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:16,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:28:16,883 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:16,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2088901539, now seen corresponding path program 2 times [2024-06-28 00:28:16,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:16,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6398559] [2024-06-28 00:28:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:16,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:20,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:20,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6398559] [2024-06-28 00:28:20,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6398559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:20,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:20,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:28:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892667751] [2024-06-28 00:28:20,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:28:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:28:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:28:20,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:20,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 269 transitions, 3570 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) [2024-06-28 00:28:20,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:20,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:20,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:21,664 INFO L124 PetriNetUnfolderBase]: 1752/2913 cut-off events. [2024-06-28 00:28:21,664 INFO L125 PetriNetUnfolderBase]: For 91933/91933 co-relation queries the response was YES. [2024-06-28 00:28:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19331 conditions, 2913 events. 1752/2913 cut-off events. For 91933/91933 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17041 event pairs, 794 based on Foata normal form. 2/2906 useless extension candidates. Maximal degree in co-relation 19234. Up to 2622 conditions per place. [2024-06-28 00:28:21,695 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 254 selfloop transitions, 39 changer transitions 0/298 dead transitions. [2024-06-28 00:28:21,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 298 transitions, 4415 flow [2024-06-28 00:28:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:28:21,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:28:21,697 INFO L175 Difference]: Start difference. First operand has 217 places, 269 transitions, 3570 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:28:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 298 transitions, 4415 flow [2024-06-28 00:28:21,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 298 transitions, 4321 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:28:21,944 INFO L231 Difference]: Finished difference. Result has 222 places, 272 transitions, 3613 flow [2024-06-28 00:28:21,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3613, PETRI_PLACES=222, PETRI_TRANSITIONS=272} [2024-06-28 00:28:21,947 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-06-28 00:28:21,947 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 272 transitions, 3613 flow [2024-06-28 00:28:21,947 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) [2024-06-28 00:28:21,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:21,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:28:21,948 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:21,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2089049409, now seen corresponding path program 3 times [2024-06-28 00:28:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502417573] [2024-06-28 00:28:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502417573] [2024-06-28 00:28:25,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502417573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:25,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:25,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:28:25,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061128133] [2024-06-28 00:28:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:25,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:28:25,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:28:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:28:25,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:25,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 272 transitions, 3613 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) [2024-06-28 00:28:25,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:25,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:25,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:27,137 INFO L124 PetriNetUnfolderBase]: 1747/2906 cut-off events. [2024-06-28 00:28:27,137 INFO L125 PetriNetUnfolderBase]: For 94050/94050 co-relation queries the response was YES. [2024-06-28 00:28:27,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19265 conditions, 2906 events. 1747/2906 cut-off events. For 94050/94050 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16996 event pairs, 793 based on Foata normal form. 2/2899 useless extension candidates. Maximal degree in co-relation 19166. Up to 2692 conditions per place. [2024-06-28 00:28:27,166 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 251 selfloop transitions, 38 changer transitions 0/294 dead transitions. [2024-06-28 00:28:27,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 294 transitions, 4303 flow [2024-06-28 00:28:27,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:28:27,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:28:27,168 INFO L175 Difference]: Start difference. First operand has 222 places, 272 transitions, 3613 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:28:27,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 294 transitions, 4303 flow [2024-06-28 00:28:27,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 294 transitions, 4199 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:28:27,390 INFO L231 Difference]: Finished difference. Result has 225 places, 274 transitions, 3633 flow [2024-06-28 00:28:27,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3633, PETRI_PLACES=225, PETRI_TRANSITIONS=274} [2024-06-28 00:28:27,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-06-28 00:28:27,391 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 274 transitions, 3633 flow [2024-06-28 00:28:27,391 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) [2024-06-28 00:28:27,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:27,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:27,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:28:27,392 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:27,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2089055361, now seen corresponding path program 1 times [2024-06-28 00:28:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:27,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682325146] [2024-06-28 00:28:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:27,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682325146] [2024-06-28 00:28:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682325146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:32,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:32,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:28:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308406424] [2024-06-28 00:28:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:28:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:28:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:28:32,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:32,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 274 transitions, 3633 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:32,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:32,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:32,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:33,752 INFO L124 PetriNetUnfolderBase]: 1762/2929 cut-off events. [2024-06-28 00:28:33,752 INFO L125 PetriNetUnfolderBase]: For 100571/100571 co-relation queries the response was YES. [2024-06-28 00:28:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19344 conditions, 2929 events. 1762/2929 cut-off events. For 100571/100571 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17080 event pairs, 799 based on Foata normal form. 8/2928 useless extension candidates. Maximal degree in co-relation 19244. Up to 2681 conditions per place. [2024-06-28 00:28:33,783 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 256 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2024-06-28 00:28:33,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 298 transitions, 4348 flow [2024-06-28 00:28:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:28:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:28:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 00:28:33,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-28 00:28:33,785 INFO L175 Difference]: Start difference. First operand has 225 places, 274 transitions, 3633 flow. Second operand 8 states and 133 transitions. [2024-06-28 00:28:33,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 298 transitions, 4348 flow [2024-06-28 00:28:34,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 298 transitions, 4249 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:28:34,024 INFO L231 Difference]: Finished difference. Result has 226 places, 275 transitions, 3633 flow [2024-06-28 00:28:34,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3633, PETRI_PLACES=226, PETRI_TRANSITIONS=275} [2024-06-28 00:28:34,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-28 00:28:34,024 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 275 transitions, 3633 flow [2024-06-28 00:28:34,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:34,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:34,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:28:34,025 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:34,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1870379808, now seen corresponding path program 1 times [2024-06-28 00:28:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:34,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503295637] [2024-06-28 00:28:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:34,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:39,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:39,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503295637] [2024-06-28 00:28:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503295637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:28:39,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49894782] [2024-06-28 00:28:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:28:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:28:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:28:39,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:39,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 275 transitions, 3633 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:39,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:39,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:39,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:40,312 INFO L124 PetriNetUnfolderBase]: 1770/2950 cut-off events. [2024-06-28 00:28:40,312 INFO L125 PetriNetUnfolderBase]: For 97474/97479 co-relation queries the response was YES. [2024-06-28 00:28:40,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19512 conditions, 2950 events. 1770/2950 cut-off events. For 97474/97479 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17036 event pairs, 473 based on Foata normal form. 7/2957 useless extension candidates. Maximal degree in co-relation 19411. Up to 2523 conditions per place. [2024-06-28 00:28:40,340 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 247 selfloop transitions, 56 changer transitions 0/308 dead transitions. [2024-06-28 00:28:40,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 308 transitions, 4551 flow [2024-06-28 00:28:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:28:40,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-28 00:28:40,342 INFO L175 Difference]: Start difference. First operand has 226 places, 275 transitions, 3633 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:28:40,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 308 transitions, 4551 flow [2024-06-28 00:28:40,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 308 transitions, 4482 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:28:40,588 INFO L231 Difference]: Finished difference. Result has 230 places, 279 transitions, 3753 flow [2024-06-28 00:28:40,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3753, PETRI_PLACES=230, PETRI_TRANSITIONS=279} [2024-06-28 00:28:40,589 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-28 00:28:40,589 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 279 transitions, 3753 flow [2024-06-28 00:28:40,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:40,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:40,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:28:40,590 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:40,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -456254332, now seen corresponding path program 2 times [2024-06-28 00:28:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320255780] [2024-06-28 00:28:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320255780] [2024-06-28 00:28:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320255780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:44,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:28:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429818010] [2024-06-28 00:28:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:44,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:28:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:28:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:28:44,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:44,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 279 transitions, 3753 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:44,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:44,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:44,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:46,134 INFO L124 PetriNetUnfolderBase]: 1778/2962 cut-off events. [2024-06-28 00:28:46,135 INFO L125 PetriNetUnfolderBase]: For 101564/101569 co-relation queries the response was YES. [2024-06-28 00:28:46,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19848 conditions, 2962 events. 1778/2962 cut-off events. For 101564/101569 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17127 event pairs, 469 based on Foata normal form. 7/2969 useless extension candidates. Maximal degree in co-relation 19746. Up to 2582 conditions per place. [2024-06-28 00:28:46,164 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 245 selfloop transitions, 55 changer transitions 0/305 dead transitions. [2024-06-28 00:28:46,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 305 transitions, 4537 flow [2024-06-28 00:28:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:28:46,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:28:46,166 INFO L175 Difference]: Start difference. First operand has 230 places, 279 transitions, 3753 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:28:46,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 305 transitions, 4537 flow [2024-06-28 00:28:46,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 305 transitions, 4408 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 00:28:46,402 INFO L231 Difference]: Finished difference. Result has 234 places, 281 transitions, 3781 flow [2024-06-28 00:28:46,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3781, PETRI_PLACES=234, PETRI_TRANSITIONS=281} [2024-06-28 00:28:46,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 00:28:46,403 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 281 transitions, 3781 flow [2024-06-28 00:28:46,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:46,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:46,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:46,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:28:46,404 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:46,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 331426592, now seen corresponding path program 3 times [2024-06-28 00:28:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:46,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767727029] [2024-06-28 00:28:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:50,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767727029] [2024-06-28 00:28:50,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767727029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:50,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:50,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:28:50,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931594908] [2024-06-28 00:28:50,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:50,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:28:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:28:50,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:28:50,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:50,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 281 transitions, 3781 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:50,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:50,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:52,074 INFO L124 PetriNetUnfolderBase]: 1786/2975 cut-off events. [2024-06-28 00:28:52,074 INFO L125 PetriNetUnfolderBase]: For 104538/104543 co-relation queries the response was YES. [2024-06-28 00:28:52,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20041 conditions, 2975 events. 1786/2975 cut-off events. For 104538/104543 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17283 event pairs, 560 based on Foata normal form. 7/2982 useless extension candidates. Maximal degree in co-relation 19937. Up to 2701 conditions per place. [2024-06-28 00:28:52,103 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 252 selfloop transitions, 44 changer transitions 0/301 dead transitions. [2024-06-28 00:28:52,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 301 transitions, 4441 flow [2024-06-28 00:28:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:28:52,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:28:52,104 INFO L175 Difference]: Start difference. First operand has 234 places, 281 transitions, 3781 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:28:52,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 301 transitions, 4441 flow [2024-06-28 00:28:52,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 301 transitions, 4320 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:28:52,376 INFO L231 Difference]: Finished difference. Result has 236 places, 283 transitions, 3783 flow [2024-06-28 00:28:52,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3783, PETRI_PLACES=236, PETRI_TRANSITIONS=283} [2024-06-28 00:28:52,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-28 00:28:52,377 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 283 transitions, 3783 flow [2024-06-28 00:28:52,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:52,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:52,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:52,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:28:52,378 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:52,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 804630500, now seen corresponding path program 2 times [2024-06-28 00:28:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262358134] [2024-06-28 00:28:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:52,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:58,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262358134] [2024-06-28 00:28:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262358134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:58,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:58,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:28:58,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327238089] [2024-06-28 00:28:58,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:58,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:28:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:28:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:28:58,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:28:58,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 283 transitions, 3783 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:58,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:58,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:28:58,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:00,269 INFO L124 PetriNetUnfolderBase]: 1783/2971 cut-off events. [2024-06-28 00:29:00,270 INFO L125 PetriNetUnfolderBase]: For 105377/105382 co-relation queries the response was YES. [2024-06-28 00:29:00,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19950 conditions, 2971 events. 1783/2971 cut-off events. For 105377/105382 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17269 event pairs, 562 based on Foata normal form. 6/2977 useless extension candidates. Maximal degree in co-relation 19845. Up to 2701 conditions per place. [2024-06-28 00:29:00,301 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 246 selfloop transitions, 54 changer transitions 0/305 dead transitions. [2024-06-28 00:29:00,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 305 transitions, 4529 flow [2024-06-28 00:29:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:29:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:29:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 00:29:00,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-28 00:29:00,304 INFO L175 Difference]: Start difference. First operand has 236 places, 283 transitions, 3783 flow. Second operand 9 states and 148 transitions. [2024-06-28 00:29:00,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 305 transitions, 4529 flow [2024-06-28 00:29:00,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 305 transitions, 4406 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:29:00,629 INFO L231 Difference]: Finished difference. Result has 238 places, 283 transitions, 3776 flow [2024-06-28 00:29:00,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3776, PETRI_PLACES=238, PETRI_TRANSITIONS=283} [2024-06-28 00:29:00,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-28 00:29:00,631 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 283 transitions, 3776 flow [2024-06-28 00:29:00,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:00,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:00,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:00,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:29:00,632 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:00,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:00,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2013296668, now seen corresponding path program 3 times [2024-06-28 00:29:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:00,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609790364] [2024-06-28 00:29:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:00,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609790364] [2024-06-28 00:29:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609790364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:06,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:06,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:06,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092545434] [2024-06-28 00:29:06,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:06,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:06,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:06,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:06,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 283 transitions, 3776 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:06,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:06,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:06,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:07,938 INFO L124 PetriNetUnfolderBase]: 1778/2969 cut-off events. [2024-06-28 00:29:07,939 INFO L125 PetriNetUnfolderBase]: For 107725/107730 co-relation queries the response was YES. [2024-06-28 00:29:07,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19913 conditions, 2969 events. 1778/2969 cut-off events. For 107725/107730 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17302 event pairs, 564 based on Foata normal form. 6/2975 useless extension candidates. Maximal degree in co-relation 19807. Up to 2708 conditions per place. [2024-06-28 00:29:07,971 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 250 selfloop transitions, 44 changer transitions 0/299 dead transitions. [2024-06-28 00:29:07,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 299 transitions, 4402 flow [2024-06-28 00:29:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:29:07,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:29:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:29:07,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:29:07,973 INFO L175 Difference]: Start difference. First operand has 238 places, 283 transitions, 3776 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:29:07,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 299 transitions, 4402 flow [2024-06-28 00:29:08,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 299 transitions, 4274 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:29:08,282 INFO L231 Difference]: Finished difference. Result has 239 places, 283 transitions, 3744 flow [2024-06-28 00:29:08,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3744, PETRI_PLACES=239, PETRI_TRANSITIONS=283} [2024-06-28 00:29:08,283 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-28 00:29:08,283 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 283 transitions, 3744 flow [2024-06-28 00:29:08,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:08,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:08,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:29:08,284 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:08,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash 335777070, now seen corresponding path program 1 times [2024-06-28 00:29:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:08,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539243992] [2024-06-28 00:29:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:12,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:12,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539243992] [2024-06-28 00:29:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539243992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269311784] [2024-06-28 00:29:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:12,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:12,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:12,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:12,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 283 transitions, 3744 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:12,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:12,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:12,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:13,981 INFO L124 PetriNetUnfolderBase]: 1788/2973 cut-off events. [2024-06-28 00:29:13,981 INFO L125 PetriNetUnfolderBase]: For 111081/111081 co-relation queries the response was YES. [2024-06-28 00:29:13,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20075 conditions, 2973 events. 1788/2973 cut-off events. For 111081/111081 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 17134 event pairs, 441 based on Foata normal form. 2/2975 useless extension candidates. Maximal degree in co-relation 19968. Up to 2401 conditions per place. [2024-06-28 00:29:14,009 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 169 selfloop transitions, 154 changer transitions 0/328 dead transitions. [2024-06-28 00:29:14,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 328 transitions, 4780 flow [2024-06-28 00:29:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:29:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:29:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-28 00:29:14,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40337711069418386 [2024-06-28 00:29:14,011 INFO L175 Difference]: Start difference. First operand has 239 places, 283 transitions, 3744 flow. Second operand 13 states and 215 transitions. [2024-06-28 00:29:14,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 328 transitions, 4780 flow [2024-06-28 00:29:14,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 328 transitions, 4674 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:29:14,282 INFO L231 Difference]: Finished difference. Result has 243 places, 289 transitions, 4073 flow [2024-06-28 00:29:14,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4073, PETRI_PLACES=243, PETRI_TRANSITIONS=289} [2024-06-28 00:29:14,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-28 00:29:14,283 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 289 transitions, 4073 flow [2024-06-28 00:29:14,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:14,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:14,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:14,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:29:14,283 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:14,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1885547326, now seen corresponding path program 4 times [2024-06-28 00:29:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:14,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263143069] [2024-06-28 00:29:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:14,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:19,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:19,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263143069] [2024-06-28 00:29:19,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263143069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:19,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:19,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:29:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124447167] [2024-06-28 00:29:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:19,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:29:19,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:29:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:29:19,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:19,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 289 transitions, 4073 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:19,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:19,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:19,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:20,460 INFO L124 PetriNetUnfolderBase]: 1783/2970 cut-off events. [2024-06-28 00:29:20,461 INFO L125 PetriNetUnfolderBase]: For 115404/115408 co-relation queries the response was YES. [2024-06-28 00:29:20,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20637 conditions, 2970 events. 1783/2970 cut-off events. For 115404/115408 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17088 event pairs, 434 based on Foata normal form. 3/2971 useless extension candidates. Maximal degree in co-relation 20530. Up to 2734 conditions per place. [2024-06-28 00:29:20,490 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 270 selfloop transitions, 28 changer transitions 0/303 dead transitions. [2024-06-28 00:29:20,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 303 transitions, 4713 flow [2024-06-28 00:29:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:29:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:29:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:29:20,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35772357723577236 [2024-06-28 00:29:20,492 INFO L175 Difference]: Start difference. First operand has 243 places, 289 transitions, 4073 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:29:20,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 303 transitions, 4713 flow [2024-06-28 00:29:20,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 303 transitions, 4545 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 00:29:20,807 INFO L231 Difference]: Finished difference. Result has 244 places, 290 transitions, 3982 flow [2024-06-28 00:29:20,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3982, PETRI_PLACES=244, PETRI_TRANSITIONS=290} [2024-06-28 00:29:20,807 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 00:29:20,808 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 290 transitions, 3982 flow [2024-06-28 00:29:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:20,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:20,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:29:20,808 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash -277490912, now seen corresponding path program 5 times [2024-06-28 00:29:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801014763] [2024-06-28 00:29:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:20,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:25,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801014763] [2024-06-28 00:29:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801014763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:25,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:29:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740098551] [2024-06-28 00:29:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:25,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:29:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:29:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:29:25,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:25,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 290 transitions, 3982 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:25,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:25,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:25,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:26,435 INFO L124 PetriNetUnfolderBase]: 1778/2961 cut-off events. [2024-06-28 00:29:26,435 INFO L125 PetriNetUnfolderBase]: For 115375/115379 co-relation queries the response was YES. [2024-06-28 00:29:26,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20440 conditions, 2961 events. 1778/2961 cut-off events. For 115375/115379 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17013 event pairs, 433 based on Foata normal form. 3/2962 useless extension candidates. Maximal degree in co-relation 20332. Up to 2716 conditions per place. [2024-06-28 00:29:26,465 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 271 selfloop transitions, 28 changer transitions 0/304 dead transitions. [2024-06-28 00:29:26,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 304 transitions, 4612 flow [2024-06-28 00:29:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:29:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:29:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:29:26,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604336043360434 [2024-06-28 00:29:26,467 INFO L175 Difference]: Start difference. First operand has 244 places, 290 transitions, 3982 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:29:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 304 transitions, 4612 flow [2024-06-28 00:29:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 4544 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:29:26,840 INFO L231 Difference]: Finished difference. Result has 247 places, 290 transitions, 3975 flow [2024-06-28 00:29:26,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3975, PETRI_PLACES=247, PETRI_TRANSITIONS=290} [2024-06-28 00:29:26,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 00:29:26,841 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 290 transitions, 3975 flow [2024-06-28 00:29:26,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:26,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:26,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:26,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:29:26,841 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:26,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash -285115114, now seen corresponding path program 2 times [2024-06-28 00:29:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:26,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722690512] [2024-06-28 00:29:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:32,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722690512] [2024-06-28 00:29:32,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722690512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:32,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:32,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:32,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064540181] [2024-06-28 00:29:32,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:32,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:32,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:32,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:32,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:32,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 290 transitions, 3975 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:32,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:32,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:32,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:33,682 INFO L124 PetriNetUnfolderBase]: 1783/2972 cut-off events. [2024-06-28 00:29:33,682 INFO L125 PetriNetUnfolderBase]: For 117951/117955 co-relation queries the response was YES. [2024-06-28 00:29:33,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20539 conditions, 2972 events. 1783/2972 cut-off events. For 117951/117955 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17134 event pairs, 432 based on Foata normal form. 2/2972 useless extension candidates. Maximal degree in co-relation 20430. Up to 2710 conditions per place. [2024-06-28 00:29:33,708 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 263 selfloop transitions, 41 changer transitions 0/309 dead transitions. [2024-06-28 00:29:33,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 309 transitions, 4901 flow [2024-06-28 00:29:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:29:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:29:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:29:33,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875338753387534 [2024-06-28 00:29:33,726 INFO L175 Difference]: Start difference. First operand has 247 places, 290 transitions, 3975 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:29:33,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 309 transitions, 4901 flow [2024-06-28 00:29:34,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 309 transitions, 4823 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:29:34,023 INFO L231 Difference]: Finished difference. Result has 249 places, 293 transitions, 4041 flow [2024-06-28 00:29:34,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4041, PETRI_PLACES=249, PETRI_TRANSITIONS=293} [2024-06-28 00:29:34,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 00:29:34,024 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 293 transitions, 4041 flow [2024-06-28 00:29:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:34,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:34,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:34,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:29:34,024 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:34,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1610663842, now seen corresponding path program 4 times [2024-06-28 00:29:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777932195] [2024-06-28 00:29:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:39,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:39,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777932195] [2024-06-28 00:29:39,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777932195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:39,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:39,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:39,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876230584] [2024-06-28 00:29:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:39,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:39,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:39,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 293 transitions, 4041 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:39,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:39,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:41,573 INFO L124 PetriNetUnfolderBase]: 1795/2987 cut-off events. [2024-06-28 00:29:41,573 INFO L125 PetriNetUnfolderBase]: For 119909/119909 co-relation queries the response was YES. [2024-06-28 00:29:41,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20684 conditions, 2987 events. 1795/2987 cut-off events. For 119909/119909 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17234 event pairs, 431 based on Foata normal form. 1/2986 useless extension candidates. Maximal degree in co-relation 20574. Up to 2643 conditions per place. [2024-06-28 00:29:41,606 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 215 selfloop transitions, 110 changer transitions 0/330 dead transitions. [2024-06-28 00:29:41,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 330 transitions, 4985 flow [2024-06-28 00:29:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:29:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:29:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-06-28 00:29:41,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37630662020905925 [2024-06-28 00:29:41,609 INFO L175 Difference]: Start difference. First operand has 249 places, 293 transitions, 4041 flow. Second operand 14 states and 216 transitions. [2024-06-28 00:29:41,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 330 transitions, 4985 flow [2024-06-28 00:29:41,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 330 transitions, 4865 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 00:29:41,995 INFO L231 Difference]: Finished difference. Result has 257 places, 302 transitions, 4266 flow [2024-06-28 00:29:41,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3921, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4266, PETRI_PLACES=257, PETRI_TRANSITIONS=302} [2024-06-28 00:29:41,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 00:29:41,996 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 302 transitions, 4266 flow [2024-06-28 00:29:41,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:41,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:41,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:41,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:29:41,997 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:41,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:41,997 INFO L85 PathProgramCache]: Analyzing trace with hash -284758924, now seen corresponding path program 3 times [2024-06-28 00:29:41,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:41,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779516190] [2024-06-28 00:29:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:41,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:47,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:47,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779516190] [2024-06-28 00:29:47,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779516190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:47,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:47,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559916827] [2024-06-28 00:29:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:47,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:47,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:47,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:47,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 302 transitions, 4266 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:47,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:47,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:47,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:49,792 INFO L124 PetriNetUnfolderBase]: 1810/3014 cut-off events. [2024-06-28 00:29:49,793 INFO L125 PetriNetUnfolderBase]: For 125816/125816 co-relation queries the response was YES. [2024-06-28 00:29:49,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21097 conditions, 3014 events. 1810/3014 cut-off events. For 125816/125816 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17472 event pairs, 429 based on Foata normal form. 2/3014 useless extension candidates. Maximal degree in co-relation 20986. Up to 2589 conditions per place. [2024-06-28 00:29:49,821 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 220 selfloop transitions, 116 changer transitions 0/341 dead transitions. [2024-06-28 00:29:49,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 341 transitions, 5439 flow [2024-06-28 00:29:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:29:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:29:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-06-28 00:29:49,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771106941838649 [2024-06-28 00:29:49,823 INFO L175 Difference]: Start difference. First operand has 257 places, 302 transitions, 4266 flow. Second operand 13 states and 201 transitions. [2024-06-28 00:29:49,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 341 transitions, 5439 flow [2024-06-28 00:29:50,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 341 transitions, 5230 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-28 00:29:50,195 INFO L231 Difference]: Finished difference. Result has 261 places, 314 transitions, 4535 flow [2024-06-28 00:29:50,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4535, PETRI_PLACES=261, PETRI_TRANSITIONS=314} [2024-06-28 00:29:50,195 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 00:29:50,195 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 314 transitions, 4535 flow [2024-06-28 00:29:50,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:50,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:50,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:50,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:29:50,197 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:50,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1601131052, now seen corresponding path program 4 times [2024-06-28 00:29:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:50,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287441253] [2024-06-28 00:29:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287441253] [2024-06-28 00:29:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287441253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375963470] [2024-06-28 00:29:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:54,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:54,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:29:54,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 314 transitions, 4535 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:54,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:54,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:29:54,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:56,893 INFO L124 PetriNetUnfolderBase]: 1833/3058 cut-off events. [2024-06-28 00:29:56,893 INFO L125 PetriNetUnfolderBase]: For 133772/133772 co-relation queries the response was YES. [2024-06-28 00:29:56,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21673 conditions, 3058 events. 1833/3058 cut-off events. For 133772/133772 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 17824 event pairs, 429 based on Foata normal form. 2/3058 useless extension candidates. Maximal degree in co-relation 21560. Up to 2614 conditions per place. [2024-06-28 00:29:56,927 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 224 selfloop transitions, 123 changer transitions 0/352 dead transitions. [2024-06-28 00:29:56,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 352 transitions, 5724 flow [2024-06-28 00:29:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:29:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:29:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2024-06-28 00:29:56,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3710801393728223 [2024-06-28 00:29:56,929 INFO L175 Difference]: Start difference. First operand has 261 places, 314 transitions, 4535 flow. Second operand 14 states and 213 transitions. [2024-06-28 00:29:56,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 352 transitions, 5724 flow [2024-06-28 00:29:57,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 352 transitions, 5465 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 00:29:57,375 INFO L231 Difference]: Finished difference. Result has 269 places, 323 transitions, 4687 flow [2024-06-28 00:29:57,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4301, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4687, PETRI_PLACES=269, PETRI_TRANSITIONS=323} [2024-06-28 00:29:57,376 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 00:29:57,376 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 323 transitions, 4687 flow [2024-06-28 00:29:57,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:57,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:57,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:57,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:29:57,377 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:57,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1349568266, now seen corresponding path program 5 times [2024-06-28 00:29:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:57,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087860703] [2024-06-28 00:29:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:03,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:03,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087860703] [2024-06-28 00:30:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087860703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:03,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:03,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:30:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818047043] [2024-06-28 00:30:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:03,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:30:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:30:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:30:03,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:03,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 323 transitions, 4687 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:03,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:03,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:03,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:04,372 INFO L124 PetriNetUnfolderBase]: 1830/3054 cut-off events. [2024-06-28 00:30:04,372 INFO L125 PetriNetUnfolderBase]: For 134788/134792 co-relation queries the response was YES. [2024-06-28 00:30:04,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21563 conditions, 3054 events. 1830/3054 cut-off events. For 134788/134792 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17669 event pairs, 433 based on Foata normal form. 2/3054 useless extension candidates. Maximal degree in co-relation 21449. Up to 2778 conditions per place. [2024-06-28 00:30:04,405 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 289 selfloop transitions, 44 changer transitions 0/338 dead transitions. [2024-06-28 00:30:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 338 transitions, 5522 flow [2024-06-28 00:30:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:30:04,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-28 00:30:04,407 INFO L175 Difference]: Start difference. First operand has 269 places, 323 transitions, 4687 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:30:04,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 338 transitions, 5522 flow [2024-06-28 00:30:04,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 338 transitions, 5283 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 00:30:04,799 INFO L231 Difference]: Finished difference. Result has 268 places, 324 transitions, 4569 flow [2024-06-28 00:30:04,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4569, PETRI_PLACES=268, PETRI_TRANSITIONS=324} [2024-06-28 00:30:04,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-28 00:30:04,799 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 324 transitions, 4569 flow [2024-06-28 00:30:04,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:04,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:04,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:04,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:30:04,800 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:04,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash 483330178, now seen corresponding path program 5 times [2024-06-28 00:30:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:04,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880769124] [2024-06-28 00:30:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:11,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880769124] [2024-06-28 00:30:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880769124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:11,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:30:11,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539075592] [2024-06-28 00:30:11,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:11,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:30:11,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:30:11,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:30:11,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:11,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 324 transitions, 4569 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:11,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:11,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:11,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:13,364 INFO L124 PetriNetUnfolderBase]: 1827/3052 cut-off events. [2024-06-28 00:30:13,364 INFO L125 PetriNetUnfolderBase]: For 135888/135892 co-relation queries the response was YES. [2024-06-28 00:30:13,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21275 conditions, 3052 events. 1827/3052 cut-off events. For 135888/135892 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17737 event pairs, 431 based on Foata normal form. 2/3052 useless extension candidates. Maximal degree in co-relation 21160. Up to 2796 conditions per place. [2024-06-28 00:30:13,397 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 300 selfloop transitions, 31 changer transitions 0/336 dead transitions. [2024-06-28 00:30:13,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 336 transitions, 5259 flow [2024-06-28 00:30:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:30:13,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604336043360434 [2024-06-28 00:30:13,399 INFO L175 Difference]: Start difference. First operand has 268 places, 324 transitions, 4569 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:30:13,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 336 transitions, 5259 flow [2024-06-28 00:30:13,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 336 transitions, 5157 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:13,778 INFO L231 Difference]: Finished difference. Result has 271 places, 324 transitions, 4537 flow [2024-06-28 00:30:13,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4467, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4537, PETRI_PLACES=271, PETRI_TRANSITIONS=324} [2024-06-28 00:30:13,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-06-28 00:30:13,779 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 324 transitions, 4537 flow [2024-06-28 00:30:13,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:13,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:13,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:13,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:30:13,779 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:13,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1849624766, now seen corresponding path program 6 times [2024-06-28 00:30:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129250172] [2024-06-28 00:30:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129250172] [2024-06-28 00:30:18,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129250172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:18,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:18,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:30:18,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961879126] [2024-06-28 00:30:18,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:18,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:30:18,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:30:18,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:30:18,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 324 transitions, 4537 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:18,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:21,540 INFO L124 PetriNetUnfolderBase]: 1836/3067 cut-off events. [2024-06-28 00:30:21,540 INFO L125 PetriNetUnfolderBase]: For 139924/139924 co-relation queries the response was YES. [2024-06-28 00:30:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21244 conditions, 3067 events. 1836/3067 cut-off events. For 139924/139924 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17906 event pairs, 430 based on Foata normal form. 3/3070 useless extension candidates. Maximal degree in co-relation 21128. Up to 2551 conditions per place. [2024-06-28 00:30:21,571 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 206 selfloop transitions, 161 changer transitions 0/372 dead transitions. [2024-06-28 00:30:21,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 372 transitions, 5686 flow [2024-06-28 00:30:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 00:30:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 00:30:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 253 transitions. [2024-06-28 00:30:21,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856707317073171 [2024-06-28 00:30:21,574 INFO L175 Difference]: Start difference. First operand has 271 places, 324 transitions, 4537 flow. Second operand 16 states and 253 transitions. [2024-06-28 00:30:21,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 372 transitions, 5686 flow [2024-06-28 00:30:21,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 372 transitions, 5594 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:30:21,988 INFO L231 Difference]: Finished difference. Result has 280 places, 338 transitions, 4996 flow [2024-06-28 00:30:21,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4457, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4996, PETRI_PLACES=280, PETRI_TRANSITIONS=338} [2024-06-28 00:30:21,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 00:30:21,989 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 338 transitions, 4996 flow [2024-06-28 00:30:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:21,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:21,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:30:21,990 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:21,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -456241436, now seen corresponding path program 1 times [2024-06-28 00:30:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967737959] [2024-06-28 00:30:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:26,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967737959] [2024-06-28 00:30:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967737959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:26,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284211277] [2024-06-28 00:30:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:26,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:26,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:26,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 338 transitions, 4996 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:26,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:26,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:26,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:27,909 INFO L124 PetriNetUnfolderBase]: 1823/3021 cut-off events. [2024-06-28 00:30:27,909 INFO L125 PetriNetUnfolderBase]: For 146742/146742 co-relation queries the response was YES. [2024-06-28 00:30:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21297 conditions, 3021 events. 1823/3021 cut-off events. For 146742/146742 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 17688 event pairs, 753 based on Foata normal form. 6/3018 useless extension candidates. Maximal degree in co-relation 21180. Up to 2594 conditions per place. [2024-06-28 00:30:27,937 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 321 selfloop transitions, 46 changer transitions 0/372 dead transitions. [2024-06-28 00:30:27,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 372 transitions, 6057 flow [2024-06-28 00:30:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:30:27,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 00:30:27,939 INFO L175 Difference]: Start difference. First operand has 280 places, 338 transitions, 4996 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:30:27,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 372 transitions, 6057 flow [2024-06-28 00:30:28,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 372 transitions, 5874 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-28 00:30:28,263 INFO L231 Difference]: Finished difference. Result has 280 places, 338 transitions, 4912 flow [2024-06-28 00:30:28,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4912, PETRI_PLACES=280, PETRI_TRANSITIONS=338} [2024-06-28 00:30:28,263 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 00:30:28,263 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 338 transitions, 4912 flow [2024-06-28 00:30:28,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:28,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:28,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:30:28,264 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:28,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2005670172, now seen corresponding path program 2 times [2024-06-28 00:30:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251177271] [2024-06-28 00:30:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:28,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:32,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:32,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251177271] [2024-06-28 00:30:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251177271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:32,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:32,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531831427] [2024-06-28 00:30:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:32,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:32,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:32,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:32,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 338 transitions, 4912 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:32,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:32,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:32,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:33,870 INFO L124 PetriNetUnfolderBase]: 1810/3019 cut-off events. [2024-06-28 00:30:33,871 INFO L125 PetriNetUnfolderBase]: For 138586/138586 co-relation queries the response was YES. [2024-06-28 00:30:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20886 conditions, 3019 events. 1810/3019 cut-off events. For 138586/138586 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17888 event pairs, 778 based on Foata normal form. 6/3016 useless extension candidates. Maximal degree in co-relation 20766. Up to 2712 conditions per place. [2024-06-28 00:30:33,903 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 319 selfloop transitions, 40 changer transitions 0/364 dead transitions. [2024-06-28 00:30:33,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 364 transitions, 5786 flow [2024-06-28 00:30:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:30:33,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-28 00:30:33,904 INFO L175 Difference]: Start difference. First operand has 280 places, 338 transitions, 4912 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:30:33,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 364 transitions, 5786 flow [2024-06-28 00:30:34,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 364 transitions, 5696 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:34,300 INFO L231 Difference]: Finished difference. Result has 283 places, 338 transitions, 4907 flow [2024-06-28 00:30:34,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4907, PETRI_PLACES=283, PETRI_TRANSITIONS=338} [2024-06-28 00:30:34,300 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-28 00:30:34,301 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 338 transitions, 4907 flow [2024-06-28 00:30:34,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:34,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:34,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:34,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:30:34,301 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:34,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2092539037, now seen corresponding path program 1 times [2024-06-28 00:30:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:34,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315064308] [2024-06-28 00:30:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:37,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:37,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315064308] [2024-06-28 00:30:37,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315064308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:37,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:37,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:37,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130590242] [2024-06-28 00:30:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:37,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:37,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 00:30:37,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 338 transitions, 4907 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:37,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:37,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 00:30:37,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:39,650 INFO L124 PetriNetUnfolderBase]: 2197/3869 cut-off events. [2024-06-28 00:30:39,650 INFO L125 PetriNetUnfolderBase]: For 325555/325714 co-relation queries the response was YES. [2024-06-28 00:30:39,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28926 conditions, 3869 events. 2197/3869 cut-off events. For 325555/325714 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 25621 event pairs, 371 based on Foata normal form. 92/3883 useless extension candidates. Maximal degree in co-relation 28805. Up to 1281 conditions per place. [2024-06-28 00:30:39,689 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 163 selfloop transitions, 87 changer transitions 11/418 dead transitions. [2024-06-28 00:30:39,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 418 transitions, 6392 flow [2024-06-28 00:30:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 00:30:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 00:30:39,691 INFO L175 Difference]: Start difference. First operand has 283 places, 338 transitions, 4907 flow. Second operand 9 states and 170 transitions. [2024-06-28 00:30:39,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 418 transitions, 6392 flow [2024-06-28 00:30:40,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 418 transitions, 6292 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:40,112 INFO L231 Difference]: Finished difference. Result has 289 places, 367 transitions, 5523 flow [2024-06-28 00:30:40,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4830, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5523, PETRI_PLACES=289, PETRI_TRANSITIONS=367} [2024-06-28 00:30:40,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 00:30:40,113 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 367 transitions, 5523 flow [2024-06-28 00:30:40,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:40,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:40,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:40,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:30:40,114 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:40,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -732109515, now seen corresponding path program 2 times [2024-06-28 00:30:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:40,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174284185] [2024-06-28 00:30:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:43,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174284185] [2024-06-28 00:30:43,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174284185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:43,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820504724] [2024-06-28 00:30:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:43,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 00:30:43,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 367 transitions, 5523 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:43,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:43,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 00:30:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:45,240 INFO L124 PetriNetUnfolderBase]: 1907/3439 cut-off events. [2024-06-28 00:30:45,241 INFO L125 PetriNetUnfolderBase]: For 235769/235802 co-relation queries the response was YES. [2024-06-28 00:30:45,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23706 conditions, 3439 events. 1907/3439 cut-off events. For 235769/235802 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 23066 event pairs, 314 based on Foata normal form. 78/3449 useless extension candidates. Maximal degree in co-relation 23582. Up to 1271 conditions per place. [2024-06-28 00:30:45,277 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 130 selfloop transitions, 83 changer transitions 34/392 dead transitions. [2024-06-28 00:30:45,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 392 transitions, 6129 flow [2024-06-28 00:30:45,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 00:30:45,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 00:30:45,278 INFO L175 Difference]: Start difference. First operand has 289 places, 367 transitions, 5523 flow. Second operand 8 states and 150 transitions. [2024-06-28 00:30:45,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 392 transitions, 6129 flow [2024-06-28 00:30:45,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 392 transitions, 6093 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:45,809 INFO L231 Difference]: Finished difference. Result has 293 places, 338 transitions, 5227 flow [2024-06-28 00:30:45,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5487, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5227, PETRI_PLACES=293, PETRI_TRANSITIONS=338} [2024-06-28 00:30:45,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 00:30:45,809 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 338 transitions, 5227 flow [2024-06-28 00:30:45,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:45,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:45,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:45,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:30:45,810 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:45,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1483623721, now seen corresponding path program 3 times [2024-06-28 00:30:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:45,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110523327] [2024-06-28 00:30:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:49,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:49,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110523327] [2024-06-28 00:30:49,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110523327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:49,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:49,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470000169] [2024-06-28 00:30:49,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:49,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:49,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 338 transitions, 5227 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:49,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:49,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:49,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:51,730 INFO L124 PetriNetUnfolderBase]: 2013/3248 cut-off events. [2024-06-28 00:30:51,730 INFO L125 PetriNetUnfolderBase]: For 296589/296589 co-relation queries the response was YES. [2024-06-28 00:30:51,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27018 conditions, 3248 events. 2013/3248 cut-off events. For 296589/296589 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18245 event pairs, 473 based on Foata normal form. 40/3288 useless extension candidates. Maximal degree in co-relation 26914. Up to 2068 conditions per place. [2024-06-28 00:30:51,768 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 232 selfloop transitions, 129 changer transitions 16/382 dead transitions. [2024-06-28 00:30:51,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 382 transitions, 6563 flow [2024-06-28 00:30:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:30:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:30:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 00:30:51,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:30:51,769 INFO L175 Difference]: Start difference. First operand has 293 places, 338 transitions, 5227 flow. Second operand 12 states and 192 transitions. [2024-06-28 00:30:51,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 382 transitions, 6563 flow [2024-06-28 00:30:52,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 382 transitions, 6105 flow, removed 23 selfloop flow, removed 26 redundant places. [2024-06-28 00:30:52,206 INFO L231 Difference]: Finished difference. Result has 272 places, 335 transitions, 5013 flow [2024-06-28 00:30:52,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4793, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5013, PETRI_PLACES=272, PETRI_TRANSITIONS=335} [2024-06-28 00:30:52,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 00:30:52,207 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 335 transitions, 5013 flow [2024-06-28 00:30:52,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:52,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:52,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:52,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:30:52,208 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:52,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash -523806043, now seen corresponding path program 1 times [2024-06-28 00:30:52,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:52,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581811295] [2024-06-28 00:30:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:52,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:56,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:56,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581811295] [2024-06-28 00:30:56,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581811295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:56,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:56,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:56,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010263592] [2024-06-28 00:30:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:56,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:56,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:56,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:30:56,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 335 transitions, 5013 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:56,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:56,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:30:56,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:58,593 INFO L124 PetriNetUnfolderBase]: 1941/3134 cut-off events. [2024-06-28 00:30:58,593 INFO L125 PetriNetUnfolderBase]: For 274054/274054 co-relation queries the response was YES. [2024-06-28 00:30:58,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25194 conditions, 3134 events. 1941/3134 cut-off events. For 274054/274054 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17555 event pairs, 469 based on Foata normal form. 42/3176 useless extension candidates. Maximal degree in co-relation 25101. Up to 2472 conditions per place. [2024-06-28 00:30:58,624 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 217 selfloop transitions, 120 changer transitions 26/368 dead transitions. [2024-06-28 00:30:58,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 368 transitions, 6087 flow [2024-06-28 00:30:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:30:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:30:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 194 transitions. [2024-06-28 00:30:58,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36397748592870544 [2024-06-28 00:30:58,634 INFO L175 Difference]: Start difference. First operand has 272 places, 335 transitions, 5013 flow. Second operand 13 states and 194 transitions. [2024-06-28 00:30:58,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 368 transitions, 6087 flow [2024-06-28 00:30:59,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 368 transitions, 5789 flow, removed 14 selfloop flow, removed 15 redundant places. [2024-06-28 00:30:59,030 INFO L231 Difference]: Finished difference. Result has 268 places, 325 transitions, 4838 flow [2024-06-28 00:30:59,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4838, PETRI_PLACES=268, PETRI_TRANSITIONS=325} [2024-06-28 00:30:59,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-28 00:30:59,031 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 325 transitions, 4838 flow [2024-06-28 00:30:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:59,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:59,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:59,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:30:59,031 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:59,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash -269009293, now seen corresponding path program 2 times [2024-06-28 00:30:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:59,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489433283] [2024-06-28 00:30:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:02,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489433283] [2024-06-28 00:31:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489433283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:02,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:02,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702229840] [2024-06-28 00:31:02,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:02,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:02,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:02,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:02,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:02,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 325 transitions, 4838 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:02,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:02,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:02,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:04,529 INFO L124 PetriNetUnfolderBase]: 2104/3415 cut-off events. [2024-06-28 00:31:04,530 INFO L125 PetriNetUnfolderBase]: For 306374/306374 co-relation queries the response was YES. [2024-06-28 00:31:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28791 conditions, 3415 events. 2104/3415 cut-off events. For 306374/306374 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 19513 event pairs, 443 based on Foata normal form. 30/3445 useless extension candidates. Maximal degree in co-relation 28701. Up to 1222 conditions per place. [2024-06-28 00:31:04,568 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 225 selfloop transitions, 131 changer transitions 16/377 dead transitions. [2024-06-28 00:31:04,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 377 transitions, 6356 flow [2024-06-28 00:31:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 00:31:04,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41685144124168516 [2024-06-28 00:31:04,570 INFO L175 Difference]: Start difference. First operand has 268 places, 325 transitions, 4838 flow. Second operand 11 states and 188 transitions. [2024-06-28 00:31:04,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 377 transitions, 6356 flow [2024-06-28 00:31:05,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 377 transitions, 6108 flow, removed 16 selfloop flow, removed 15 redundant places. [2024-06-28 00:31:05,077 INFO L231 Difference]: Finished difference. Result has 260 places, 322 transitions, 4949 flow [2024-06-28 00:31:05,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4614, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4949, PETRI_PLACES=260, PETRI_TRANSITIONS=322} [2024-06-28 00:31:05,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 00:31:05,078 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 322 transitions, 4949 flow [2024-06-28 00:31:05,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:05,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:05,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:31:05,078 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:05,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:05,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1642218419, now seen corresponding path program 3 times [2024-06-28 00:31:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417694421] [2024-06-28 00:31:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:08,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:08,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417694421] [2024-06-28 00:31:08,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417694421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:08,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:08,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:08,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802363826] [2024-06-28 00:31:08,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:08,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:08,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:08,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:08,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 322 transitions, 4949 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:08,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:08,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:08,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:10,370 INFO L124 PetriNetUnfolderBase]: 2148/3507 cut-off events. [2024-06-28 00:31:10,370 INFO L125 PetriNetUnfolderBase]: For 298681/298681 co-relation queries the response was YES. [2024-06-28 00:31:10,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30284 conditions, 3507 events. 2148/3507 cut-off events. For 298681/298681 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20185 event pairs, 545 based on Foata normal form. 30/3537 useless extension candidates. Maximal degree in co-relation 30196. Up to 1383 conditions per place. [2024-06-28 00:31:10,410 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 231 selfloop transitions, 122 changer transitions 10/368 dead transitions. [2024-06-28 00:31:10,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 368 transitions, 6411 flow [2024-06-28 00:31:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 00:31:10,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035476718403548 [2024-06-28 00:31:10,412 INFO L175 Difference]: Start difference. First operand has 260 places, 322 transitions, 4949 flow. Second operand 11 states and 182 transitions. [2024-06-28 00:31:10,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 368 transitions, 6411 flow [2024-06-28 00:31:10,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 368 transitions, 6243 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:31:10,953 INFO L231 Difference]: Finished difference. Result has 261 places, 317 transitions, 4982 flow [2024-06-28 00:31:10,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4793, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4982, PETRI_PLACES=261, PETRI_TRANSITIONS=317} [2024-06-28 00:31:10,953 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 00:31:10,954 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 317 transitions, 4982 flow [2024-06-28 00:31:10,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:10,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:10,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:10,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:31:10,954 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:10,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1749535211, now seen corresponding path program 4 times [2024-06-28 00:31:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447331023] [2024-06-28 00:31:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447331023] [2024-06-28 00:31:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447331023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:14,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:14,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958326378] [2024-06-28 00:31:14,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:14,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:14,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:14,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 317 transitions, 4982 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:14,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:14,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:14,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:17,330 INFO L124 PetriNetUnfolderBase]: 2160/3543 cut-off events. [2024-06-28 00:31:17,331 INFO L125 PetriNetUnfolderBase]: For 309632/309632 co-relation queries the response was YES. [2024-06-28 00:31:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30453 conditions, 3543 events. 2160/3543 cut-off events. For 309632/309632 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20856 event pairs, 732 based on Foata normal form. 42/3585 useless extension candidates. Maximal degree in co-relation 30365. Up to 2879 conditions per place. [2024-06-28 00:31:17,367 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 213 selfloop transitions, 97 changer transitions 30/345 dead transitions. [2024-06-28 00:31:17,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 345 transitions, 5956 flow [2024-06-28 00:31:17,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:31:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:31:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 193 transitions. [2024-06-28 00:31:17,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621013133208255 [2024-06-28 00:31:17,369 INFO L175 Difference]: Start difference. First operand has 261 places, 317 transitions, 4982 flow. Second operand 13 states and 193 transitions. [2024-06-28 00:31:17,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 345 transitions, 5956 flow [2024-06-28 00:31:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 345 transitions, 5690 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:31:17,875 INFO L231 Difference]: Finished difference. Result has 265 places, 299 transitions, 4662 flow [2024-06-28 00:31:17,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4716, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4662, PETRI_PLACES=265, PETRI_TRANSITIONS=299} [2024-06-28 00:31:17,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 00:31:17,876 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 299 transitions, 4662 flow [2024-06-28 00:31:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:17,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:17,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:31:17,876 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:17,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1749714701, now seen corresponding path program 5 times [2024-06-28 00:31:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971925981] [2024-06-28 00:31:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971925981] [2024-06-28 00:31:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971925981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:21,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:21,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417781457] [2024-06-28 00:31:21,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:21,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:21,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:21,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:21,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:21,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 299 transitions, 4662 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:21,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:21,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:21,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:23,977 INFO L124 PetriNetUnfolderBase]: 2185/3642 cut-off events. [2024-06-28 00:31:23,977 INFO L125 PetriNetUnfolderBase]: For 326011/326011 co-relation queries the response was YES. [2024-06-28 00:31:24,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31321 conditions, 3642 events. 2185/3642 cut-off events. For 326011/326011 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21876 event pairs, 665 based on Foata normal form. 36/3678 useless extension candidates. Maximal degree in co-relation 31233. Up to 2539 conditions per place. [2024-06-28 00:31:24,014 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 211 selfloop transitions, 100 changer transitions 16/332 dead transitions. [2024-06-28 00:31:24,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 332 transitions, 5793 flow [2024-06-28 00:31:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:31:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:31:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 00:31:24,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:31:24,016 INFO L175 Difference]: Start difference. First operand has 265 places, 299 transitions, 4662 flow. Second operand 12 states and 184 transitions. [2024-06-28 00:31:24,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 332 transitions, 5793 flow [2024-06-28 00:31:24,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 332 transitions, 5551 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 00:31:24,505 INFO L231 Difference]: Finished difference. Result has 259 places, 286 transitions, 4445 flow [2024-06-28 00:31:24,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4432, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4445, PETRI_PLACES=259, PETRI_TRANSITIONS=286} [2024-06-28 00:31:24,506 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-28 00:31:24,506 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 286 transitions, 4445 flow [2024-06-28 00:31:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:24,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:24,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:24,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:31:24,506 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:24,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash -815586295, now seen corresponding path program 6 times [2024-06-28 00:31:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806220315] [2024-06-28 00:31:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806220315] [2024-06-28 00:31:28,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806220315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:28,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:28,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026898681] [2024-06-28 00:31:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:28,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:28,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:28,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:28,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 286 transitions, 4445 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:28,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:28,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:28,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:30,136 INFO L124 PetriNetUnfolderBase]: 2179/3629 cut-off events. [2024-06-28 00:31:30,136 INFO L125 PetriNetUnfolderBase]: For 314164/314164 co-relation queries the response was YES. [2024-06-28 00:31:30,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30813 conditions, 3629 events. 2179/3629 cut-off events. For 314164/314164 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21942 event pairs, 878 based on Foata normal form. 42/3671 useless extension candidates. Maximal degree in co-relation 30726. Up to 3088 conditions per place. [2024-06-28 00:31:30,171 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 229 selfloop transitions, 39 changer transitions 31/304 dead transitions. [2024-06-28 00:31:30,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 304 transitions, 5175 flow [2024-06-28 00:31:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:31:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:31:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-28 00:31:30,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35609756097560974 [2024-06-28 00:31:30,173 INFO L175 Difference]: Start difference. First operand has 259 places, 286 transitions, 4445 flow. Second operand 10 states and 146 transitions. [2024-06-28 00:31:30,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 304 transitions, 5175 flow [2024-06-28 00:31:30,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 304 transitions, 4875 flow, removed 2 selfloop flow, removed 17 redundant places. [2024-06-28 00:31:30,615 INFO L231 Difference]: Finished difference. Result has 252 places, 265 transitions, 3871 flow [2024-06-28 00:31:30,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4145, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3871, PETRI_PLACES=252, PETRI_TRANSITIONS=265} [2024-06-28 00:31:30,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-28 00:31:30,616 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 265 transitions, 3871 flow [2024-06-28 00:31:30,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:30,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:30,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:30,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:31:30,616 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:30,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:30,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1560109303, now seen corresponding path program 7 times [2024-06-28 00:31:30,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287858785] [2024-06-28 00:31:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:30,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:34,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:34,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287858785] [2024-06-28 00:31:34,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287858785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:34,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:34,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:34,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097624791] [2024-06-28 00:31:34,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:34,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:34,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:34,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:34,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:34,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 265 transitions, 3871 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:34,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:34,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:34,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:36,331 INFO L124 PetriNetUnfolderBase]: 2118/3562 cut-off events. [2024-06-28 00:31:36,331 INFO L125 PetriNetUnfolderBase]: For 309251/309251 co-relation queries the response was YES. [2024-06-28 00:31:36,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29997 conditions, 3562 events. 2118/3562 cut-off events. For 309251/309251 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21740 event pairs, 830 based on Foata normal form. 36/3598 useless extension candidates. Maximal degree in co-relation 29909. Up to 2940 conditions per place. [2024-06-28 00:31:36,366 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 231 selfloop transitions, 29 changer transitions 23/288 dead transitions. [2024-06-28 00:31:36,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 288 transitions, 4641 flow [2024-06-28 00:31:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:31:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:31:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:31:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36097560975609755 [2024-06-28 00:31:36,368 INFO L175 Difference]: Start difference. First operand has 252 places, 265 transitions, 3871 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:31:36,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 288 transitions, 4641 flow [2024-06-28 00:31:36,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 288 transitions, 4518 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:31:36,790 INFO L231 Difference]: Finished difference. Result has 246 places, 251 transitions, 3454 flow [2024-06-28 00:31:36,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3454, PETRI_PLACES=246, PETRI_TRANSITIONS=251} [2024-06-28 00:31:36,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-06-28 00:31:36,790 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 251 transitions, 3454 flow [2024-06-28 00:31:36,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:36,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:36,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:31:36,791 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:36,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash -576867520, now seen corresponding path program 1 times [2024-06-28 00:31:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892642389] [2024-06-28 00:31:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:42,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:42,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892642389] [2024-06-28 00:31:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892642389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:42,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:42,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703478711] [2024-06-28 00:31:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:42,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:42,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 251 transitions, 3454 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:42,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:42,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:42,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:44,463 INFO L124 PetriNetUnfolderBase]: 1930/3162 cut-off events. [2024-06-28 00:31:44,463 INFO L125 PetriNetUnfolderBase]: For 244968/244968 co-relation queries the response was YES. [2024-06-28 00:31:44,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27456 conditions, 3162 events. 1930/3162 cut-off events. For 244968/244968 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18160 event pairs, 723 based on Foata normal form. 2/3156 useless extension candidates. Maximal degree in co-relation 27370. Up to 2712 conditions per place. [2024-06-28 00:31:44,496 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 237 selfloop transitions, 44 changer transitions 1/287 dead transitions. [2024-06-28 00:31:44,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 287 transitions, 4447 flow [2024-06-28 00:31:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:31:44,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38137472283813745 [2024-06-28 00:31:44,497 INFO L175 Difference]: Start difference. First operand has 246 places, 251 transitions, 3454 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:31:44,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 287 transitions, 4447 flow [2024-06-28 00:31:44,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 287 transitions, 4290 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:31:44,884 INFO L231 Difference]: Finished difference. Result has 245 places, 252 transitions, 3423 flow [2024-06-28 00:31:44,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3423, PETRI_PLACES=245, PETRI_TRANSITIONS=252} [2024-06-28 00:31:44,885 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-28 00:31:44,885 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 252 transitions, 3423 flow [2024-06-28 00:31:44,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:44,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:44,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:44,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:31:44,886 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:44,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1507474176, now seen corresponding path program 2 times [2024-06-28 00:31:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691084516] [2024-06-28 00:31:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:50,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691084516] [2024-06-28 00:31:50,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691084516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:50,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:50,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:50,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816051764] [2024-06-28 00:31:50,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:50,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:50,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:50,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:50,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 252 transitions, 3423 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:50,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:50,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:50,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:52,799 INFO L124 PetriNetUnfolderBase]: 1977/3269 cut-off events. [2024-06-28 00:31:52,800 INFO L125 PetriNetUnfolderBase]: For 260895/260895 co-relation queries the response was YES. [2024-06-28 00:31:52,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28830 conditions, 3269 events. 1977/3269 cut-off events. For 260895/260895 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19120 event pairs, 749 based on Foata normal form. 2/3268 useless extension candidates. Maximal degree in co-relation 28744. Up to 2935 conditions per place. [2024-06-28 00:31:52,832 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 236 selfloop transitions, 41 changer transitions 1/283 dead transitions. [2024-06-28 00:31:52,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 283 transitions, 4314 flow [2024-06-28 00:31:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:31:52,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37028824833702884 [2024-06-28 00:31:52,834 INFO L175 Difference]: Start difference. First operand has 245 places, 252 transitions, 3423 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:31:52,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 283 transitions, 4314 flow [2024-06-28 00:31:53,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 283 transitions, 4095 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-06-28 00:31:53,198 INFO L231 Difference]: Finished difference. Result has 245 places, 255 transitions, 3377 flow [2024-06-28 00:31:53,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3377, PETRI_PLACES=245, PETRI_TRANSITIONS=255} [2024-06-28 00:31:53,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-28 00:31:53,199 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 255 transitions, 3377 flow [2024-06-28 00:31:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:53,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:53,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:53,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:31:53,200 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:53,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1390307550, now seen corresponding path program 3 times [2024-06-28 00:31:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441266712] [2024-06-28 00:31:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:59,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:59,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441266712] [2024-06-28 00:31:59,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441266712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:59,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073631549] [2024-06-28 00:31:59,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:59,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:59,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:31:59,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 255 transitions, 3377 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:59,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:59,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:31:59,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:01,543 INFO L124 PetriNetUnfolderBase]: 1968/3264 cut-off events. [2024-06-28 00:32:01,543 INFO L125 PetriNetUnfolderBase]: For 261596/261596 co-relation queries the response was YES. [2024-06-28 00:32:01,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28438 conditions, 3264 events. 1968/3264 cut-off events. For 261596/261596 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19204 event pairs, 762 based on Foata normal form. 2/3264 useless extension candidates. Maximal degree in co-relation 28353. Up to 3001 conditions per place. [2024-06-28 00:32:01,578 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 232 selfloop transitions, 40 changer transitions 1/278 dead transitions. [2024-06-28 00:32:01,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 278 transitions, 4039 flow [2024-06-28 00:32:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-28 00:32:01,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34146341463414637 [2024-06-28 00:32:01,580 INFO L175 Difference]: Start difference. First operand has 245 places, 255 transitions, 3377 flow. Second operand 12 states and 168 transitions. [2024-06-28 00:32:01,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 278 transitions, 4039 flow [2024-06-28 00:32:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 278 transitions, 3935 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:02,046 INFO L231 Difference]: Finished difference. Result has 249 places, 256 transitions, 3394 flow [2024-06-28 00:32:02,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3394, PETRI_PLACES=249, PETRI_TRANSITIONS=256} [2024-06-28 00:32:02,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 00:32:02,047 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 256 transitions, 3394 flow [2024-06-28 00:32:02,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:02,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:02,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:02,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:32:02,047 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:02,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2146931277, now seen corresponding path program 8 times [2024-06-28 00:32:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742639564] [2024-06-28 00:32:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:08,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742639564] [2024-06-28 00:32:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742639564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:08,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:08,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:08,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737640848] [2024-06-28 00:32:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:08,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:08,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:08,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 256 transitions, 3394 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:08,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:08,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:08,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:09,643 INFO L124 PetriNetUnfolderBase]: 1984/3298 cut-off events. [2024-06-28 00:32:09,643 INFO L125 PetriNetUnfolderBase]: For 281375/281375 co-relation queries the response was YES. [2024-06-28 00:32:09,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28787 conditions, 3298 events. 1984/3298 cut-off events. For 281375/281375 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19331 event pairs, 418 based on Foata normal form. 6/3304 useless extension candidates. Maximal degree in co-relation 28701. Up to 2604 conditions per place. [2024-06-28 00:32:09,678 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 239 selfloop transitions, 50 changer transitions 0/294 dead transitions. [2024-06-28 00:32:09,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 294 transitions, 4386 flow [2024-06-28 00:32:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:32:09,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:32:09,680 INFO L175 Difference]: Start difference. First operand has 249 places, 256 transitions, 3394 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:32:09,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 294 transitions, 4386 flow [2024-06-28 00:32:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 294 transitions, 4278 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:10,116 INFO L231 Difference]: Finished difference. Result has 249 places, 258 transitions, 3418 flow [2024-06-28 00:32:10,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3418, PETRI_PLACES=249, PETRI_TRANSITIONS=258} [2024-06-28 00:32:10,116 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 00:32:10,117 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 258 transitions, 3418 flow [2024-06-28 00:32:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:10,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:10,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:10,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:32:10,117 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:10,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:10,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1390301598, now seen corresponding path program 1 times [2024-06-28 00:32:10,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:10,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421533775] [2024-06-28 00:32:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:10,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421533775] [2024-06-28 00:32:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421533775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:17,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:17,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:32:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330970362] [2024-06-28 00:32:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:17,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:32:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:17,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:32:17,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:32:17,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:17,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 258 transitions, 3418 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:17,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:17,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:17,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:19,156 INFO L124 PetriNetUnfolderBase]: 1999/3337 cut-off events. [2024-06-28 00:32:19,156 INFO L125 PetriNetUnfolderBase]: For 288812/288812 co-relation queries the response was YES. [2024-06-28 00:32:19,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29172 conditions, 3337 events. 1999/3337 cut-off events. For 288812/288812 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19861 event pairs, 761 based on Foata normal form. 8/3345 useless extension candidates. Maximal degree in co-relation 29085. Up to 3018 conditions per place. [2024-06-28 00:32:19,190 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 230 selfloop transitions, 34 changer transitions 13/282 dead transitions. [2024-06-28 00:32:19,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 282 transitions, 4097 flow [2024-06-28 00:32:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:32:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:32:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:32:19,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35698447893569846 [2024-06-28 00:32:19,192 INFO L175 Difference]: Start difference. First operand has 249 places, 258 transitions, 3418 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:32:19,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 282 transitions, 4097 flow [2024-06-28 00:32:19,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 282 transitions, 4016 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:32:19,693 INFO L231 Difference]: Finished difference. Result has 254 places, 252 transitions, 3337 flow [2024-06-28 00:32:19,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3337, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3337, PETRI_PLACES=254, PETRI_TRANSITIONS=252} [2024-06-28 00:32:19,694 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-28 00:32:19,694 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 252 transitions, 3337 flow [2024-06-28 00:32:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:19,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:19,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:32:19,695 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:19,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2147200047, now seen corresponding path program 9 times [2024-06-28 00:32:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430053857] [2024-06-28 00:32:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430053857] [2024-06-28 00:32:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430053857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:25,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:25,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463493542] [2024-06-28 00:32:25,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:25,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:25,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:25,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 252 transitions, 3337 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:25,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:25,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:25,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:27,141 INFO L124 PetriNetUnfolderBase]: 1979/3311 cut-off events. [2024-06-28 00:32:27,142 INFO L125 PetriNetUnfolderBase]: For 295942/295942 co-relation queries the response was YES. [2024-06-28 00:32:27,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28793 conditions, 3311 events. 1979/3311 cut-off events. For 295942/295942 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19495 event pairs, 437 based on Foata normal form. 6/3317 useless extension candidates. Maximal degree in co-relation 28705. Up to 2577 conditions per place. [2024-06-28 00:32:27,175 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 235 selfloop transitions, 47 changer transitions 0/287 dead transitions. [2024-06-28 00:32:27,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 287 transitions, 4314 flow [2024-06-28 00:32:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 00:32:27,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853658536585366 [2024-06-28 00:32:27,177 INFO L175 Difference]: Start difference. First operand has 254 places, 252 transitions, 3337 flow. Second operand 10 states and 158 transitions. [2024-06-28 00:32:27,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 287 transitions, 4314 flow [2024-06-28 00:32:27,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 287 transitions, 4217 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 00:32:27,630 INFO L231 Difference]: Finished difference. Result has 247 places, 253 transitions, 3359 flow [2024-06-28 00:32:27,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=247, PETRI_TRANSITIONS=253} [2024-06-28 00:32:27,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 00:32:27,631 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 253 transitions, 3359 flow [2024-06-28 00:32:27,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:27,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:27,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:27,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:32:27,632 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:27,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2147200388, now seen corresponding path program 4 times [2024-06-28 00:32:27,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:27,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704355809] [2024-06-28 00:32:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704355809] [2024-06-28 00:32:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704355809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:33,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132913495] [2024-06-28 00:32:33,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:33,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:33,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:33,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:33,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 253 transitions, 3359 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:33,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:33,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:35,160 INFO L124 PetriNetUnfolderBase]: 2053/3425 cut-off events. [2024-06-28 00:32:35,160 INFO L125 PetriNetUnfolderBase]: For 289177/289177 co-relation queries the response was YES. [2024-06-28 00:32:35,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29708 conditions, 3425 events. 2053/3425 cut-off events. For 289177/289177 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20353 event pairs, 516 based on Foata normal form. 8/3433 useless extension candidates. Maximal degree in co-relation 29623. Up to 2876 conditions per place. [2024-06-28 00:32:35,195 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 239 selfloop transitions, 47 changer transitions 0/291 dead transitions. [2024-06-28 00:32:35,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 291 transitions, 4269 flow [2024-06-28 00:32:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:32:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:32:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 00:32:35,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376940133037694 [2024-06-28 00:32:35,197 INFO L175 Difference]: Start difference. First operand has 247 places, 253 transitions, 3359 flow. Second operand 11 states and 170 transitions. [2024-06-28 00:32:35,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 291 transitions, 4269 flow [2024-06-28 00:32:35,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 291 transitions, 4188 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:35,710 INFO L231 Difference]: Finished difference. Result has 251 places, 255 transitions, 3426 flow [2024-06-28 00:32:35,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3426, PETRI_PLACES=251, PETRI_TRANSITIONS=255} [2024-06-28 00:32:35,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 209 predicate places. [2024-06-28 00:32:35,711 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 255 transitions, 3426 flow [2024-06-28 00:32:35,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:35,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:35,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:35,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:32:35,712 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:35,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1822639838, now seen corresponding path program 5 times [2024-06-28 00:32:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518723508] [2024-06-28 00:32:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:40,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:40,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518723508] [2024-06-28 00:32:40,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518723508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:40,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:40,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686109713] [2024-06-28 00:32:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:40,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:40,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:40,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 255 transitions, 3426 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:40,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:40,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:40,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:41,624 INFO L124 PetriNetUnfolderBase]: 2193/3620 cut-off events. [2024-06-28 00:32:41,624 INFO L125 PetriNetUnfolderBase]: For 335447/335447 co-relation queries the response was YES. [2024-06-28 00:32:41,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32704 conditions, 3620 events. 2193/3620 cut-off events. For 335447/335447 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 21519 event pairs, 536 based on Foata normal form. 8/3628 useless extension candidates. Maximal degree in co-relation 32618. Up to 2152 conditions per place. [2024-06-28 00:32:41,665 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 189 selfloop transitions, 120 changer transitions 0/314 dead transitions. [2024-06-28 00:32:41,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 314 transitions, 4853 flow [2024-06-28 00:32:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 00:32:41,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247967479674797 [2024-06-28 00:32:41,666 INFO L175 Difference]: Start difference. First operand has 251 places, 255 transitions, 3426 flow. Second operand 12 states and 209 transitions. [2024-06-28 00:32:41,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 314 transitions, 4853 flow [2024-06-28 00:32:42,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 314 transitions, 4720 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:42,196 INFO L231 Difference]: Finished difference. Result has 258 places, 264 transitions, 3803 flow [2024-06-28 00:32:42,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3803, PETRI_PLACES=258, PETRI_TRANSITIONS=264} [2024-06-28 00:32:42,197 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-28 00:32:42,197 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 264 transitions, 3803 flow [2024-06-28 00:32:42,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:42,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:42,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:42,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:32:42,198 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:42,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1823026129, now seen corresponding path program 10 times [2024-06-28 00:32:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:42,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475883626] [2024-06-28 00:32:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:47,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475883626] [2024-06-28 00:32:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475883626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:47,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:47,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:47,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240637971] [2024-06-28 00:32:47,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:47,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:47,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:47,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 264 transitions, 3803 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:47,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:47,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:47,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:49,403 INFO L124 PetriNetUnfolderBase]: 2213/3679 cut-off events. [2024-06-28 00:32:49,403 INFO L125 PetriNetUnfolderBase]: For 353288/353288 co-relation queries the response was YES. [2024-06-28 00:32:49,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33633 conditions, 3679 events. 2213/3679 cut-off events. For 353288/353288 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 22060 event pairs, 517 based on Foata normal form. 6/3685 useless extension candidates. Maximal degree in co-relation 33543. Up to 3164 conditions per place. [2024-06-28 00:32:49,440 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 246 selfloop transitions, 43 changer transitions 0/294 dead transitions. [2024-06-28 00:32:49,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 294 transitions, 4637 flow [2024-06-28 00:32:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:32:49,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2024-06-28 00:32:49,442 INFO L175 Difference]: Start difference. First operand has 258 places, 264 transitions, 3803 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:32:49,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 294 transitions, 4637 flow [2024-06-28 00:32:49,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 294 transitions, 4443 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 00:32:49,999 INFO L231 Difference]: Finished difference. Result has 263 places, 265 transitions, 3711 flow [2024-06-28 00:32:49,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3711, PETRI_PLACES=263, PETRI_TRANSITIONS=265} [2024-06-28 00:32:50,000 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-28 00:32:50,000 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 265 transitions, 3711 flow [2024-06-28 00:32:50,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:50,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:50,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:32:50,000 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:50,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1823025788, now seen corresponding path program 6 times [2024-06-28 00:32:50,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:50,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058574632] [2024-06-28 00:32:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:50,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:55,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058574632] [2024-06-28 00:32:55,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058574632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:55,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:55,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:55,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648759712] [2024-06-28 00:32:55,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:55,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:55,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:32:55,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 265 transitions, 3711 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:55,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:55,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:32:55,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:56,740 INFO L124 PetriNetUnfolderBase]: 2208/3674 cut-off events. [2024-06-28 00:32:56,740 INFO L125 PetriNetUnfolderBase]: For 352929/352929 co-relation queries the response was YES. [2024-06-28 00:32:56,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33519 conditions, 3674 events. 2208/3674 cut-off events. For 352929/352929 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 22068 event pairs, 530 based on Foata normal form. 2/3676 useless extension candidates. Maximal degree in co-relation 33427. Up to 3226 conditions per place. [2024-06-28 00:32:56,781 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 244 selfloop transitions, 43 changer transitions 0/292 dead transitions. [2024-06-28 00:32:56,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 292 transitions, 4516 flow [2024-06-28 00:32:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:32:56,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36829268292682926 [2024-06-28 00:32:56,783 INFO L175 Difference]: Start difference. First operand has 263 places, 265 transitions, 3711 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:32:56,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 292 transitions, 4516 flow [2024-06-28 00:32:57,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 292 transitions, 4377 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:57,378 INFO L231 Difference]: Finished difference. Result has 265 places, 266 transitions, 3694 flow [2024-06-28 00:32:57,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3592, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3694, PETRI_PLACES=265, PETRI_TRANSITIONS=266} [2024-06-28 00:32:57,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 00:32:57,382 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 266 transitions, 3694 flow [2024-06-28 00:32:57,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:57,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:57,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:57,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:32:57,382 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:57,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:57,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1826779968, now seen corresponding path program 7 times [2024-06-28 00:32:57,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:57,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734776163] [2024-06-28 00:32:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734776163] [2024-06-28 00:33:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734776163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:01,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:01,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349437928] [2024-06-28 00:33:01,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:01,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:01,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 266 transitions, 3694 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:01,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:01,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:01,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:03,306 INFO L124 PetriNetUnfolderBase]: 2376/3931 cut-off events. [2024-06-28 00:33:03,306 INFO L125 PetriNetUnfolderBase]: For 416940/416940 co-relation queries the response was YES. [2024-06-28 00:33:03,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36449 conditions, 3931 events. 2376/3931 cut-off events. For 416940/416940 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23813 event pairs, 869 based on Foata normal form. 16/3944 useless extension candidates. Maximal degree in co-relation 36356. Up to 3315 conditions per place. [2024-06-28 00:33:03,349 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 208 selfloop transitions, 105 changer transitions 0/318 dead transitions. [2024-06-28 00:33:03,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 318 transitions, 4866 flow [2024-06-28 00:33:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:33:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:33:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 219 transitions. [2024-06-28 00:33:03,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41088180112570355 [2024-06-28 00:33:03,350 INFO L175 Difference]: Start difference. First operand has 265 places, 266 transitions, 3694 flow. Second operand 13 states and 219 transitions. [2024-06-28 00:33:03,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 318 transitions, 4866 flow [2024-06-28 00:33:03,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 318 transitions, 4785 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:33:03,947 INFO L231 Difference]: Finished difference. Result has 273 places, 274 transitions, 4079 flow [2024-06-28 00:33:03,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4079, PETRI_PLACES=273, PETRI_TRANSITIONS=274} [2024-06-28 00:33:03,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-28 00:33:03,948 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 274 transitions, 4079 flow [2024-06-28 00:33:03,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:03,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:03,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:33:03,948 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:03,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1448263458, now seen corresponding path program 8 times [2024-06-28 00:33:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:03,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535662023] [2024-06-28 00:33:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:10,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535662023] [2024-06-28 00:33:10,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535662023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:10,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229167933] [2024-06-28 00:33:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:10,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:10,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 274 transitions, 4079 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:10,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:10,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:10,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:12,037 INFO L124 PetriNetUnfolderBase]: 2371/3929 cut-off events. [2024-06-28 00:33:12,037 INFO L125 PetriNetUnfolderBase]: For 417164/417164 co-relation queries the response was YES. [2024-06-28 00:33:12,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37191 conditions, 3929 events. 2371/3929 cut-off events. For 417164/417164 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23908 event pairs, 924 based on Foata normal form. 2/3931 useless extension candidates. Maximal degree in co-relation 37095. Up to 3642 conditions per place. [2024-06-28 00:33:12,077 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 256 selfloop transitions, 30 changer transitions 1/292 dead transitions. [2024-06-28 00:33:12,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 292 transitions, 4736 flow [2024-06-28 00:33:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:33:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:33:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 00:33:12,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3348115299334812 [2024-06-28 00:33:12,079 INFO L175 Difference]: Start difference. First operand has 273 places, 274 transitions, 4079 flow. Second operand 11 states and 151 transitions. [2024-06-28 00:33:12,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 292 transitions, 4736 flow [2024-06-28 00:33:12,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 292 transitions, 4528 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 00:33:12,745 INFO L231 Difference]: Finished difference. Result has 276 places, 274 transitions, 3946 flow [2024-06-28 00:33:12,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3875, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3946, PETRI_PLACES=276, PETRI_TRANSITIONS=274} [2024-06-28 00:33:12,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 00:33:12,746 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 274 transitions, 3946 flow [2024-06-28 00:33:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:12,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:12,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:12,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:33:12,746 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:12,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1448115588, now seen corresponding path program 9 times [2024-06-28 00:33:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:12,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74335301] [2024-06-28 00:33:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:12,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74335301] [2024-06-28 00:33:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74335301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:19,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829976466] [2024-06-28 00:33:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:19,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 274 transitions, 3946 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:19,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:19,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:19,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:21,833 INFO L124 PetriNetUnfolderBase]: 2355/3896 cut-off events. [2024-06-28 00:33:21,834 INFO L125 PetriNetUnfolderBase]: For 419621/419621 co-relation queries the response was YES. [2024-06-28 00:33:21,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36508 conditions, 3896 events. 2355/3896 cut-off events. For 419621/419621 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23623 event pairs, 905 based on Foata normal form. 2/3896 useless extension candidates. Maximal degree in co-relation 36410. Up to 3546 conditions per place. [2024-06-28 00:33:21,983 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 261 selfloop transitions, 31 changer transitions 1/298 dead transitions. [2024-06-28 00:33:21,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 298 transitions, 4819 flow [2024-06-28 00:33:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:33:21,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-28 00:33:21,985 INFO L175 Difference]: Start difference. First operand has 276 places, 274 transitions, 3946 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:33:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 298 transitions, 4819 flow [2024-06-28 00:33:22,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 298 transitions, 4733 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:33:22,720 INFO L231 Difference]: Finished difference. Result has 277 places, 275 transitions, 3964 flow [2024-06-28 00:33:22,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3860, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3964, PETRI_PLACES=277, PETRI_TRANSITIONS=275} [2024-06-28 00:33:22,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 00:33:22,721 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 275 transitions, 3964 flow [2024-06-28 00:33:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:22,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:22,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:33:22,721 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:22,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash 28430970, now seen corresponding path program 10 times [2024-06-28 00:33:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:22,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569552276] [2024-06-28 00:33:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569552276] [2024-06-28 00:33:26,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569552276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:26,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:26,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406621144] [2024-06-28 00:33:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:26,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:26,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:27,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:27,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 275 transitions, 3964 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:27,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:27,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:28,902 INFO L124 PetriNetUnfolderBase]: 2451/4025 cut-off events. [2024-06-28 00:33:28,903 INFO L125 PetriNetUnfolderBase]: For 479236/479236 co-relation queries the response was YES. [2024-06-28 00:33:28,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38868 conditions, 4025 events. 2451/4025 cut-off events. For 479236/479236 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 24365 event pairs, 908 based on Foata normal form. 8/4028 useless extension candidates. Maximal degree in co-relation 38769. Up to 2986 conditions per place. [2024-06-28 00:33:28,945 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 207 selfloop transitions, 112 changer transitions 0/324 dead transitions. [2024-06-28 00:33:28,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 324 transitions, 5222 flow [2024-06-28 00:33:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:33:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:33:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-28 00:33:28,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052532833020638 [2024-06-28 00:33:28,947 INFO L175 Difference]: Start difference. First operand has 277 places, 275 transitions, 3964 flow. Second operand 13 states and 216 transitions. [2024-06-28 00:33:28,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 324 transitions, 5222 flow [2024-06-28 00:33:29,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 324 transitions, 5086 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 00:33:29,757 INFO L231 Difference]: Finished difference. Result has 281 places, 282 transitions, 4266 flow [2024-06-28 00:33:29,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4266, PETRI_PLACES=281, PETRI_TRANSITIONS=282} [2024-06-28 00:33:29,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-28 00:33:29,758 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 282 transitions, 4266 flow [2024-06-28 00:33:29,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:29,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:29,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:29,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:33:29,758 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:29,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1819161408, now seen corresponding path program 11 times [2024-06-28 00:33:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635966358] [2024-06-28 00:33:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:29,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635966358] [2024-06-28 00:33:34,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635966358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:34,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:34,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069048400] [2024-06-28 00:33:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:34,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:34,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:34,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 282 transitions, 4266 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:34,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:34,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:36,374 INFO L124 PetriNetUnfolderBase]: 2443/4035 cut-off events. [2024-06-28 00:33:36,375 INFO L125 PetriNetUnfolderBase]: For 502222/502222 co-relation queries the response was YES. [2024-06-28 00:33:36,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38768 conditions, 4035 events. 2443/4035 cut-off events. For 502222/502222 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24552 event pairs, 965 based on Foata normal form. 18/4053 useless extension candidates. Maximal degree in co-relation 38669. Up to 3590 conditions per place. [2024-06-28 00:33:36,422 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 218 selfloop transitions, 96 changer transitions 0/319 dead transitions. [2024-06-28 00:33:36,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 319 transitions, 5064 flow [2024-06-28 00:33:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:33:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:33:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-06-28 00:33:36,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39399624765478425 [2024-06-28 00:33:36,424 INFO L175 Difference]: Start difference. First operand has 281 places, 282 transitions, 4266 flow. Second operand 13 states and 210 transitions. [2024-06-28 00:33:36,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 319 transitions, 5064 flow [2024-06-28 00:33:37,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 319 transitions, 4822 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 00:33:37,374 INFO L231 Difference]: Finished difference. Result has 287 places, 283 transitions, 4258 flow [2024-06-28 00:33:37,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4258, PETRI_PLACES=287, PETRI_TRANSITIONS=283} [2024-06-28 00:33:37,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 00:33:37,375 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 283 transitions, 4258 flow [2024-06-28 00:33:37,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:37,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:37,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:33:37,376 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:37,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -935591863, now seen corresponding path program 11 times [2024-06-28 00:33:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573414568] [2024-06-28 00:33:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:42,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:42,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573414568] [2024-06-28 00:33:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573414568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:42,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:42,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745178421] [2024-06-28 00:33:42,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:42,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:42,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 283 transitions, 4258 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:42,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:42,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:42,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:45,134 INFO L124 PetriNetUnfolderBase]: 2463/4073 cut-off events. [2024-06-28 00:33:45,135 INFO L125 PetriNetUnfolderBase]: For 488363/488363 co-relation queries the response was YES. [2024-06-28 00:33:45,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38888 conditions, 4073 events. 2463/4073 cut-off events. For 488363/488363 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24904 event pairs, 912 based on Foata normal form. 6/4079 useless extension candidates. Maximal degree in co-relation 38787. Up to 3739 conditions per place. [2024-06-28 00:33:45,179 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 266 selfloop transitions, 33 changer transitions 0/304 dead transitions. [2024-06-28 00:33:45,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 304 transitions, 4938 flow [2024-06-28 00:33:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:33:45,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35121951219512193 [2024-06-28 00:33:45,180 INFO L175 Difference]: Start difference. First operand has 287 places, 283 transitions, 4258 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:33:45,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 304 transitions, 4938 flow [2024-06-28 00:33:46,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 304 transitions, 4736 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:33:46,111 INFO L231 Difference]: Finished difference. Result has 286 places, 284 transitions, 4140 flow [2024-06-28 00:33:46,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4140, PETRI_PLACES=286, PETRI_TRANSITIONS=284} [2024-06-28 00:33:46,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-28 00:33:46,112 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 284 transitions, 4140 flow [2024-06-28 00:33:46,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:46,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:46,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:46,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:33:46,112 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:46,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:46,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2046631776, now seen corresponding path program 12 times [2024-06-28 00:33:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715316247] [2024-06-28 00:33:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715316247] [2024-06-28 00:33:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715316247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:51,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:51,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399736321] [2024-06-28 00:33:51,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:51,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:51,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:51,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:51,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:33:51,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 284 transitions, 4140 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:51,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:51,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:33:51,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:53,093 INFO L124 PetriNetUnfolderBase]: 2458/4062 cut-off events. [2024-06-28 00:33:53,093 INFO L125 PetriNetUnfolderBase]: For 486416/486416 co-relation queries the response was YES. [2024-06-28 00:33:53,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38619 conditions, 4062 events. 2458/4062 cut-off events. For 486416/486416 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24797 event pairs, 922 based on Foata normal form. 2/4062 useless extension candidates. Maximal degree in co-relation 38517. Up to 3714 conditions per place. [2024-06-28 00:33:53,144 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 267 selfloop transitions, 33 changer transitions 0/305 dead transitions. [2024-06-28 00:33:53,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 305 transitions, 4946 flow [2024-06-28 00:33:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:33:53,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2024-06-28 00:33:53,146 INFO L175 Difference]: Start difference. First operand has 286 places, 284 transitions, 4140 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:33:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 305 transitions, 4946 flow [2024-06-28 00:33:53,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 305 transitions, 4848 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:33:53,921 INFO L231 Difference]: Finished difference. Result has 288 places, 284 transitions, 4113 flow [2024-06-28 00:33:53,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4113, PETRI_PLACES=288, PETRI_TRANSITIONS=284} [2024-06-28 00:33:53,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 00:33:53,922 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 284 transitions, 4113 flow [2024-06-28 00:33:53,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:53,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:53,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:53,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:33:53,923 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:53,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1448269410, now seen corresponding path program 2 times [2024-06-28 00:33:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771787019] [2024-06-28 00:33:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:01,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:01,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771787019] [2024-06-28 00:34:01,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771787019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:01,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:01,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:01,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106465222] [2024-06-28 00:34:01,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:01,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:01,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:01,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 284 transitions, 4113 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:01,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:01,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:01,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:03,688 INFO L124 PetriNetUnfolderBase]: 2466/4072 cut-off events. [2024-06-28 00:34:03,688 INFO L125 PetriNetUnfolderBase]: For 510482/510482 co-relation queries the response was YES. [2024-06-28 00:34:03,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38734 conditions, 4072 events. 2466/4072 cut-off events. For 510482/510482 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24786 event pairs, 943 based on Foata normal form. 8/4080 useless extension candidates. Maximal degree in co-relation 38631. Up to 3759 conditions per place. [2024-06-28 00:34:03,735 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 262 selfloop transitions, 24 changer transitions 13/304 dead transitions. [2024-06-28 00:34:03,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 304 transitions, 4830 flow [2024-06-28 00:34:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:34:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:34:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:34:03,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3685636856368564 [2024-06-28 00:34:03,737 INFO L175 Difference]: Start difference. First operand has 288 places, 284 transitions, 4113 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:34:03,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 304 transitions, 4830 flow [2024-06-28 00:34:04,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 304 transitions, 4756 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:34:04,519 INFO L231 Difference]: Finished difference. Result has 289 places, 278 transitions, 4013 flow [2024-06-28 00:34:04,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4013, PETRI_PLACES=289, PETRI_TRANSITIONS=278} [2024-06-28 00:34:04,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 00:34:04,520 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 278 transitions, 4013 flow [2024-06-28 00:34:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:04,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:04,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:04,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:34:04,520 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:04,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1677396395, now seen corresponding path program 12 times [2024-06-28 00:34:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:04,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051174790] [2024-06-28 00:34:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:09,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051174790] [2024-06-28 00:34:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051174790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:09,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893568722] [2024-06-28 00:34:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:09,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:09,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:09,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:09,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 278 transitions, 4013 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:09,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:09,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:09,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:11,953 INFO L124 PetriNetUnfolderBase]: 2388/3950 cut-off events. [2024-06-28 00:34:11,954 INFO L125 PetriNetUnfolderBase]: For 503379/503379 co-relation queries the response was YES. [2024-06-28 00:34:11,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37413 conditions, 3950 events. 2388/3950 cut-off events. For 503379/503379 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23914 event pairs, 954 based on Foata normal form. 8/3958 useless extension candidates. Maximal degree in co-relation 37309. Up to 3693 conditions per place. [2024-06-28 00:34:12,002 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 268 selfloop transitions, 20 changer transitions 0/293 dead transitions. [2024-06-28 00:34:12,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 293 transitions, 4674 flow [2024-06-28 00:34:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:34:12,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33414634146341465 [2024-06-28 00:34:12,004 INFO L175 Difference]: Start difference. First operand has 289 places, 278 transitions, 4013 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:34:12,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 293 transitions, 4674 flow [2024-06-28 00:34:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 293 transitions, 4608 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:34:12,886 INFO L231 Difference]: Finished difference. Result has 284 places, 279 transitions, 4009 flow [2024-06-28 00:34:12,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3947, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4009, PETRI_PLACES=284, PETRI_TRANSITIONS=279} [2024-06-28 00:34:12,886 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-28 00:34:12,886 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 279 transitions, 4009 flow [2024-06-28 00:34:12,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:12,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:12,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:12,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:34:12,887 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:12,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash -248309982, now seen corresponding path program 13 times [2024-06-28 00:34:12,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:12,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567689860] [2024-06-28 00:34:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:12,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:18,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567689860] [2024-06-28 00:34:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567689860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:18,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:18,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:18,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820975297] [2024-06-28 00:34:18,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:18,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:18,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:18,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 279 transitions, 4009 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:18,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:18,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:18,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:20,197 INFO L124 PetriNetUnfolderBase]: 2396/3962 cut-off events. [2024-06-28 00:34:20,197 INFO L125 PetriNetUnfolderBase]: For 450724/450724 co-relation queries the response was YES. [2024-06-28 00:34:20,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36858 conditions, 3962 events. 2396/3962 cut-off events. For 450724/450724 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23996 event pairs, 956 based on Foata normal form. 2/3964 useless extension candidates. Maximal degree in co-relation 36757. Up to 3728 conditions per place. [2024-06-28 00:34:20,243 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 263 selfloop transitions, 24 changer transitions 0/292 dead transitions. [2024-06-28 00:34:20,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 292 transitions, 4670 flow [2024-06-28 00:34:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 00:34:20,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33170731707317075 [2024-06-28 00:34:20,245 INFO L175 Difference]: Start difference. First operand has 284 places, 279 transitions, 4009 flow. Second operand 10 states and 136 transitions. [2024-06-28 00:34:20,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 292 transitions, 4670 flow [2024-06-28 00:34:21,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 292 transitions, 4627 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:34:21,104 INFO L231 Difference]: Finished difference. Result has 286 places, 281 transitions, 4084 flow [2024-06-28 00:34:21,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4084, PETRI_PLACES=286, PETRI_TRANSITIONS=281} [2024-06-28 00:34:21,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-28 00:34:21,105 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 281 transitions, 4084 flow [2024-06-28 00:34:21,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:21,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:21,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:34:21,106 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:21,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -248457852, now seen corresponding path program 14 times [2024-06-28 00:34:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151693161] [2024-06-28 00:34:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:26,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:26,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151693161] [2024-06-28 00:34:26,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151693161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:26,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:26,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:26,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574419241] [2024-06-28 00:34:26,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:26,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:26,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:26,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:26,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 281 transitions, 4084 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:26,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:28,242 INFO L124 PetriNetUnfolderBase]: 2391/3937 cut-off events. [2024-06-28 00:34:28,243 INFO L125 PetriNetUnfolderBase]: For 456681/456681 co-relation queries the response was YES. [2024-06-28 00:34:28,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36903 conditions, 3937 events. 2391/3937 cut-off events. For 456681/456681 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23682 event pairs, 923 based on Foata normal form. 2/3935 useless extension candidates. Maximal degree in co-relation 36801. Up to 3649 conditions per place. [2024-06-28 00:34:28,295 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 268 selfloop transitions, 26 changer transitions 0/299 dead transitions. [2024-06-28 00:34:28,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 299 transitions, 4945 flow [2024-06-28 00:34:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 00:34:28,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463414634146341 [2024-06-28 00:34:28,297 INFO L175 Difference]: Start difference. First operand has 286 places, 281 transitions, 4084 flow. Second operand 10 states and 142 transitions. [2024-06-28 00:34:28,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 299 transitions, 4945 flow [2024-06-28 00:34:29,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 299 transitions, 4848 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 00:34:29,235 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 4111 flow [2024-06-28 00:34:29,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4111, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2024-06-28 00:34:29,235 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 00:34:29,235 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 4111 flow [2024-06-28 00:34:29,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:29,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:29,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:29,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:34:29,236 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:29,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash 122587968, now seen corresponding path program 15 times [2024-06-28 00:34:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105823868] [2024-06-28 00:34:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105823868] [2024-06-28 00:34:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105823868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:33,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:33,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214749243] [2024-06-28 00:34:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:33,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:33,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:33,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:33,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 4111 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:33,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:33,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:33,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:35,132 INFO L124 PetriNetUnfolderBase]: 2427/3999 cut-off events. [2024-06-28 00:34:35,133 INFO L125 PetriNetUnfolderBase]: For 488588/488588 co-relation queries the response was YES. [2024-06-28 00:34:35,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37662 conditions, 3999 events. 2427/3999 cut-off events. For 488588/488588 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 24178 event pairs, 940 based on Foata normal form. 10/4009 useless extension candidates. Maximal degree in co-relation 37559. Up to 3649 conditions per place. [2024-06-28 00:34:35,180 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 224 selfloop transitions, 80 changer transitions 0/309 dead transitions. [2024-06-28 00:34:35,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 309 transitions, 4883 flow [2024-06-28 00:34:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:34:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:34:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-28 00:34:35,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678861788617886 [2024-06-28 00:34:35,182 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 4111 flow. Second operand 12 states and 181 transitions. [2024-06-28 00:34:35,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 309 transitions, 4883 flow [2024-06-28 00:34:36,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 309 transitions, 4765 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 00:34:36,193 INFO L231 Difference]: Finished difference. Result has 292 places, 284 transitions, 4191 flow [2024-06-28 00:34:36,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3993, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4191, PETRI_PLACES=292, PETRI_TRANSITIONS=284} [2024-06-28 00:34:36,193 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-28 00:34:36,194 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 284 transitions, 4191 flow [2024-06-28 00:34:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:36,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:36,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:36,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:34:36,194 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:36,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash -248458193, now seen corresponding path program 13 times [2024-06-28 00:34:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:36,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447932975] [2024-06-28 00:34:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447932975] [2024-06-28 00:34:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447932975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:41,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432185886] [2024-06-28 00:34:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:41,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:41,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 284 transitions, 4191 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:41,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:41,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:41,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:43,259 INFO L124 PetriNetUnfolderBase]: 2414/3978 cut-off events. [2024-06-28 00:34:43,259 INFO L125 PetriNetUnfolderBase]: For 478852/478852 co-relation queries the response was YES. [2024-06-28 00:34:43,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37244 conditions, 3978 events. 2414/3978 cut-off events. For 478852/478852 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 24028 event pairs, 920 based on Foata normal form. 6/3984 useless extension candidates. Maximal degree in co-relation 37141. Up to 3705 conditions per place. [2024-06-28 00:34:43,302 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 274 selfloop transitions, 22 changer transitions 0/301 dead transitions. [2024-06-28 00:34:43,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 301 transitions, 4877 flow [2024-06-28 00:34:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:34:43,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34146341463414637 [2024-06-28 00:34:43,304 INFO L175 Difference]: Start difference. First operand has 292 places, 284 transitions, 4191 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:34:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 301 transitions, 4877 flow [2024-06-28 00:34:44,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 301 transitions, 4713 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:34:44,232 INFO L231 Difference]: Finished difference. Result has 293 places, 284 transitions, 4075 flow [2024-06-28 00:34:44,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4075, PETRI_PLACES=293, PETRI_TRANSITIONS=284} [2024-06-28 00:34:44,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 00:34:44,233 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 284 transitions, 4075 flow [2024-06-28 00:34:44,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:44,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:44,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:44,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:34:44,234 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:44,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:44,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1476937310, now seen corresponding path program 16 times [2024-06-28 00:34:44,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:44,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481481192] [2024-06-28 00:34:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481481192] [2024-06-28 00:34:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481481192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734334864] [2024-06-28 00:34:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:49,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:49,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:49,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:49,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 284 transitions, 4075 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:49,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:49,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:49,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:51,290 INFO L124 PetriNetUnfolderBase]: 2554/4222 cut-off events. [2024-06-28 00:34:51,291 INFO L125 PetriNetUnfolderBase]: For 603715/603715 co-relation queries the response was YES. [2024-06-28 00:34:51,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38889 conditions, 4222 events. 2554/4222 cut-off events. For 603715/603715 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 26014 event pairs, 953 based on Foata normal form. 44/4266 useless extension candidates. Maximal degree in co-relation 38785. Up to 3656 conditions per place. [2024-06-28 00:34:51,334 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 226 selfloop transitions, 71 changer transitions 13/315 dead transitions. [2024-06-28 00:34:51,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 315 transitions, 4889 flow [2024-06-28 00:34:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 00:34:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 00:34:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 215 transitions. [2024-06-28 00:34:51,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34959349593495936 [2024-06-28 00:34:51,336 INFO L175 Difference]: Start difference. First operand has 293 places, 284 transitions, 4075 flow. Second operand 15 states and 215 transitions. [2024-06-28 00:34:51,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 315 transitions, 4889 flow [2024-06-28 00:34:52,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 315 transitions, 4815 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:34:52,249 INFO L231 Difference]: Finished difference. Result has 299 places, 274 transitions, 4060 flow [2024-06-28 00:34:52,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4001, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4060, PETRI_PLACES=299, PETRI_TRANSITIONS=274} [2024-06-28 00:34:52,250 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-28 00:34:52,250 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 274 transitions, 4060 flow [2024-06-28 00:34:52,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:52,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:52,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:52,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:34:52,251 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:52,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1621920162, now seen corresponding path program 17 times [2024-06-28 00:34:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:52,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496262258] [2024-06-28 00:34:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:57,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496262258] [2024-06-28 00:34:57,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496262258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:57,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:57,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399841306] [2024-06-28 00:34:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:57,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:57,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:57,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:34:57,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 274 transitions, 4060 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:57,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:57,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:34:57,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:59,553 INFO L124 PetriNetUnfolderBase]: 2460/4068 cut-off events. [2024-06-28 00:34:59,554 INFO L125 PetriNetUnfolderBase]: For 529071/529071 co-relation queries the response was YES. [2024-06-28 00:34:59,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38362 conditions, 4068 events. 2460/4068 cut-off events. For 529071/529071 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24777 event pairs, 933 based on Foata normal form. 10/4078 useless extension candidates. Maximal degree in co-relation 38257. Up to 3712 conditions per place. [2024-06-28 00:34:59,605 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 228 selfloop transitions, 69 changer transitions 0/302 dead transitions. [2024-06-28 00:34:59,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 302 transitions, 4826 flow [2024-06-28 00:34:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:34:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:34:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 202 transitions. [2024-06-28 00:34:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519163763066202 [2024-06-28 00:34:59,606 INFO L175 Difference]: Start difference. First operand has 299 places, 274 transitions, 4060 flow. Second operand 14 states and 202 transitions. [2024-06-28 00:34:59,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 302 transitions, 4826 flow [2024-06-28 00:35:00,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 302 transitions, 4611 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-28 00:35:00,505 INFO L231 Difference]: Finished difference. Result has 298 places, 275 transitions, 4028 flow [2024-06-28 00:35:00,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4028, PETRI_PLACES=298, PETRI_TRANSITIONS=275} [2024-06-28 00:35:00,505 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 00:35:00,505 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 275 transitions, 4028 flow [2024-06-28 00:35:00,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:00,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:00,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:00,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:35:00,506 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:00,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1614301602, now seen corresponding path program 18 times [2024-06-28 00:35:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:00,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794316190] [2024-06-28 00:35:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:00,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794316190] [2024-06-28 00:35:05,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794316190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:05,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:05,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601060204] [2024-06-28 00:35:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:05,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:05,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:05,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:05,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 275 transitions, 4028 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:05,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:05,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:05,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:06,975 INFO L124 PetriNetUnfolderBase]: 2608/4282 cut-off events. [2024-06-28 00:35:06,975 INFO L125 PetriNetUnfolderBase]: For 549147/549147 co-relation queries the response was YES. [2024-06-28 00:35:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40383 conditions, 4282 events. 2608/4282 cut-off events. For 549147/549147 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26126 event pairs, 969 based on Foata normal form. 16/4298 useless extension candidates. Maximal degree in co-relation 40277. Up to 3804 conditions per place. [2024-06-28 00:35:07,023 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 231 selfloop transitions, 81 changer transitions 0/317 dead transitions. [2024-06-28 00:35:07,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 317 transitions, 5054 flow [2024-06-28 00:35:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:35:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:35:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 215 transitions. [2024-06-28 00:35:07,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37456445993031356 [2024-06-28 00:35:07,025 INFO L175 Difference]: Start difference. First operand has 298 places, 275 transitions, 4028 flow. Second operand 14 states and 215 transitions. [2024-06-28 00:35:07,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 317 transitions, 5054 flow [2024-06-28 00:35:08,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 317 transitions, 4886 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-06-28 00:35:08,251 INFO L231 Difference]: Finished difference. Result has 302 places, 282 transitions, 4273 flow [2024-06-28 00:35:08,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4273, PETRI_PLACES=302, PETRI_TRANSITIONS=282} [2024-06-28 00:35:08,251 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-28 00:35:08,252 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 282 transitions, 4273 flow [2024-06-28 00:35:08,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:08,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:08,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:08,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:35:08,252 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:08,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash -8321622, now seen corresponding path program 19 times [2024-06-28 00:35:08,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:08,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683151824] [2024-06-28 00:35:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:08,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:12,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:12,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683151824] [2024-06-28 00:35:12,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683151824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:12,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:12,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938995869] [2024-06-28 00:35:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:12,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:12,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:12,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:12,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:12,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 282 transitions, 4273 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:12,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:12,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:12,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:14,498 INFO L124 PetriNetUnfolderBase]: 2759/4515 cut-off events. [2024-06-28 00:35:14,498 INFO L125 PetriNetUnfolderBase]: For 621923/621923 co-relation queries the response was YES. [2024-06-28 00:35:14,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43946 conditions, 4515 events. 2759/4515 cut-off events. For 621923/621923 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 27791 event pairs, 982 based on Foata normal form. 10/4521 useless extension candidates. Maximal degree in co-relation 43837. Up to 3977 conditions per place. [2024-06-28 00:35:14,562 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 241 selfloop transitions, 70 changer transitions 0/316 dead transitions. [2024-06-28 00:35:14,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 316 transitions, 5386 flow [2024-06-28 00:35:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:35:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:35:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 00:35:14,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3858093126385809 [2024-06-28 00:35:14,564 INFO L175 Difference]: Start difference. First operand has 302 places, 282 transitions, 4273 flow. Second operand 11 states and 174 transitions. [2024-06-28 00:35:14,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 316 transitions, 5386 flow [2024-06-28 00:35:15,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 316 transitions, 5170 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-28 00:35:15,684 INFO L231 Difference]: Finished difference. Result has 305 places, 286 transitions, 4342 flow [2024-06-28 00:35:15,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4342, PETRI_PLACES=305, PETRI_TRANSITIONS=286} [2024-06-28 00:35:15,685 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-28 00:35:15,685 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 286 transitions, 4342 flow [2024-06-28 00:35:15,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:15,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:15,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:15,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:35:15,686 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:15,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash -780777856, now seen corresponding path program 20 times [2024-06-28 00:35:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:15,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629775397] [2024-06-28 00:35:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:15,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629775397] [2024-06-28 00:35:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629775397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:21,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509606126] [2024-06-28 00:35:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:21,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:21,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:21,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 286 transitions, 4342 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:21,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:21,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:21,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:22,850 INFO L124 PetriNetUnfolderBase]: 2754/4510 cut-off events. [2024-06-28 00:35:22,850 INFO L125 PetriNetUnfolderBase]: For 592523/592523 co-relation queries the response was YES. [2024-06-28 00:35:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43584 conditions, 4510 events. 2754/4510 cut-off events. For 592523/592523 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27885 event pairs, 1029 based on Foata normal form. 2/4510 useless extension candidates. Maximal degree in co-relation 43473. Up to 4250 conditions per place. [2024-06-28 00:35:22,909 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 279 selfloop transitions, 20 changer transitions 0/304 dead transitions. [2024-06-28 00:35:22,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 304 transitions, 5204 flow [2024-06-28 00:35:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:35:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:35:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:35:22,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33658536585365856 [2024-06-28 00:35:22,911 INFO L175 Difference]: Start difference. First operand has 305 places, 286 transitions, 4342 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:35:22,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 304 transitions, 5204 flow [2024-06-28 00:35:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 304 transitions, 5089 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:23,998 INFO L231 Difference]: Finished difference. Result has 308 places, 288 transitions, 4334 flow [2024-06-28 00:35:23,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4227, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4334, PETRI_PLACES=308, PETRI_TRANSITIONS=288} [2024-06-28 00:35:23,999 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 00:35:23,999 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 288 transitions, 4334 flow [2024-06-28 00:35:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:23,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:35:24,000 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:24,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1306546651, now seen corresponding path program 14 times [2024-06-28 00:35:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648879981] [2024-06-28 00:35:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648879981] [2024-06-28 00:35:29,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648879981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:29,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:29,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228895429] [2024-06-28 00:35:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:29,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:29,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 288 transitions, 4334 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:29,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:29,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:29,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:31,779 INFO L124 PetriNetUnfolderBase]: 2741/4503 cut-off events. [2024-06-28 00:35:31,779 INFO L125 PetriNetUnfolderBase]: For 608541/608541 co-relation queries the response was YES. [2024-06-28 00:35:31,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42982 conditions, 4503 events. 2741/4503 cut-off events. For 608541/608541 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 27871 event pairs, 1009 based on Foata normal form. 6/4509 useless extension candidates. Maximal degree in co-relation 42869. Up to 4184 conditions per place. [2024-06-28 00:35:31,834 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 276 selfloop transitions, 25 changer transitions 0/306 dead transitions. [2024-06-28 00:35:31,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 306 transitions, 5032 flow [2024-06-28 00:35:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:35:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:35:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 00:35:31,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463414634146341 [2024-06-28 00:35:31,836 INFO L175 Difference]: Start difference. First operand has 308 places, 288 transitions, 4334 flow. Second operand 10 states and 142 transitions. [2024-06-28 00:35:31,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 306 transitions, 5032 flow [2024-06-28 00:35:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 306 transitions, 4944 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:33,048 INFO L231 Difference]: Finished difference. Result has 311 places, 288 transitions, 4300 flow [2024-06-28 00:35:33,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4300, PETRI_PLACES=311, PETRI_TRANSITIONS=288} [2024-06-28 00:35:33,049 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2024-06-28 00:35:33,049 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 288 transitions, 4300 flow [2024-06-28 00:35:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:33,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:33,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:33,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:35:33,050 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:33,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:33,050 INFO L85 PathProgramCache]: Analyzing trace with hash 349710778, now seen corresponding path program 21 times [2024-06-28 00:35:33,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:33,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164913335] [2024-06-28 00:35:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:33,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164913335] [2024-06-28 00:35:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164913335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277441068] [2024-06-28 00:35:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:37,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:37,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:37,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 288 transitions, 4300 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:37,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:37,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:39,290 INFO L124 PetriNetUnfolderBase]: 2756/4506 cut-off events. [2024-06-28 00:35:39,290 INFO L125 PetriNetUnfolderBase]: For 620480/620480 co-relation queries the response was YES. [2024-06-28 00:35:39,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43137 conditions, 4506 events. 2756/4506 cut-off events. For 620480/620480 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 27730 event pairs, 1007 based on Foata normal form. 8/4510 useless extension candidates. Maximal degree in co-relation 43023. Up to 3454 conditions per place. [2024-06-28 00:35:39,345 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 229 selfloop transitions, 90 changer transitions 0/324 dead transitions. [2024-06-28 00:35:39,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 324 transitions, 5447 flow [2024-06-28 00:35:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:35:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:35:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 00:35:39,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37601626016260165 [2024-06-28 00:35:39,347 INFO L175 Difference]: Start difference. First operand has 311 places, 288 transitions, 4300 flow. Second operand 12 states and 185 transitions. [2024-06-28 00:35:39,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 324 transitions, 5447 flow [2024-06-28 00:35:40,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 324 transitions, 5336 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:35:40,479 INFO L231 Difference]: Finished difference. Result has 314 places, 293 transitions, 4580 flow [2024-06-28 00:35:40,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4580, PETRI_PLACES=314, PETRI_TRANSITIONS=293} [2024-06-28 00:35:40,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-28 00:35:40,480 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 293 transitions, 4580 flow [2024-06-28 00:35:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:40,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:40,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:35:40,481 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:40,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1016799797, now seen corresponding path program 1 times [2024-06-28 00:35:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:40,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339602842] [2024-06-28 00:35:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339602842] [2024-06-28 00:35:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339602842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:46,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:46,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:35:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703091072] [2024-06-28 00:35:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:35:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:46,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:35:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:35:47,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:47,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 293 transitions, 4580 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:47,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:47,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:47,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:49,384 INFO L124 PetriNetUnfolderBase]: 2761/4519 cut-off events. [2024-06-28 00:35:49,384 INFO L125 PetriNetUnfolderBase]: For 625116/625116 co-relation queries the response was YES. [2024-06-28 00:35:49,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44046 conditions, 4519 events. 2761/4519 cut-off events. For 625116/625116 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27922 event pairs, 1038 based on Foata normal form. 1/4520 useless extension candidates. Maximal degree in co-relation 43929. Up to 4295 conditions per place. [2024-06-28 00:35:49,441 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 269 selfloop transitions, 33 changer transitions 0/307 dead transitions. [2024-06-28 00:35:49,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 307 transitions, 5428 flow [2024-06-28 00:35:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:35:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:35:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:35:49,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34146341463414637 [2024-06-28 00:35:49,443 INFO L175 Difference]: Start difference. First operand has 314 places, 293 transitions, 4580 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:35:49,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 307 transitions, 5428 flow [2024-06-28 00:35:50,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 307 transitions, 5081 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-28 00:35:50,857 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 4366 flow [2024-06-28 00:35:50,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4366, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-28 00:35:50,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-28 00:35:50,858 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 4366 flow [2024-06-28 00:35:50,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:50,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:50,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:50,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:35:50,869 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:50,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1017128087, now seen corresponding path program 2 times [2024-06-28 00:35:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609294249] [2024-06-28 00:35:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:58,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609294249] [2024-06-28 00:35:58,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609294249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:58,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:58,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:35:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968918933] [2024-06-28 00:35:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:58,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:35:58,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:58,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:35:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:35:58,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:35:58,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 4366 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:58,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:58,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:35:58,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:00,198 INFO L124 PetriNetUnfolderBase]: 2758/4531 cut-off events. [2024-06-28 00:36:00,199 INFO L125 PetriNetUnfolderBase]: For 641799/641799 co-relation queries the response was YES. [2024-06-28 00:36:00,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43302 conditions, 4531 events. 2758/4531 cut-off events. For 641799/641799 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28082 event pairs, 1019 based on Foata normal form. 1/4532 useless extension candidates. Maximal degree in co-relation 43184. Up to 4292 conditions per place. [2024-06-28 00:36:00,258 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 268 selfloop transitions, 33 changer transitions 0/306 dead transitions. [2024-06-28 00:36:00,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 306 transitions, 4992 flow [2024-06-28 00:36:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:36:00,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35772357723577236 [2024-06-28 00:36:00,260 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 4366 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:36:00,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 306 transitions, 4992 flow [2024-06-28 00:36:01,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 306 transitions, 4907 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:36:01,787 INFO L231 Difference]: Finished difference. Result has 317 places, 296 transitions, 4355 flow [2024-06-28 00:36:01,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4355, PETRI_PLACES=317, PETRI_TRANSITIONS=296} [2024-06-28 00:36:01,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 00:36:01,788 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 296 transitions, 4355 flow [2024-06-28 00:36:01,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:01,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:01,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:01,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:36:01,789 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:01,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash 122968710, now seen corresponding path program 3 times [2024-06-28 00:36:01,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:01,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877222119] [2024-06-28 00:36:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877222119] [2024-06-28 00:36:07,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877222119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:07,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:07,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:36:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94207464] [2024-06-28 00:36:07,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:07,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:36:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:36:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:36:08,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:36:08,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 296 transitions, 4355 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:08,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:08,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:36:08,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:10,098 INFO L124 PetriNetUnfolderBase]: 2740/4489 cut-off events. [2024-06-28 00:36:10,098 INFO L125 PetriNetUnfolderBase]: For 624096/624096 co-relation queries the response was YES. [2024-06-28 00:36:10,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42394 conditions, 4489 events. 2740/4489 cut-off events. For 624096/624096 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27684 event pairs, 1038 based on Foata normal form. 8/4497 useless extension candidates. Maximal degree in co-relation 42276. Up to 4129 conditions per place. [2024-06-28 00:36:10,151 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 247 selfloop transitions, 68 changer transitions 0/320 dead transitions. [2024-06-28 00:36:10,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 320 transitions, 5125 flow [2024-06-28 00:36:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:36:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:36:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 00:36:10,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376940133037694 [2024-06-28 00:36:10,153 INFO L175 Difference]: Start difference. First operand has 317 places, 296 transitions, 4355 flow. Second operand 11 states and 170 transitions. [2024-06-28 00:36:10,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 320 transitions, 5125 flow [2024-06-28 00:36:11,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 320 transitions, 5040 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:36:11,611 INFO L231 Difference]: Finished difference. Result has 319 places, 296 transitions, 4415 flow [2024-06-28 00:36:11,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4415, PETRI_PLACES=319, PETRI_TRANSITIONS=296} [2024-06-28 00:36:11,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 00:36:11,611 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 296 transitions, 4415 flow [2024-06-28 00:36:11,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:11,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:11,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:11,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:36:11,612 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:11,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash -645527057, now seen corresponding path program 3 times [2024-06-28 00:36:11,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:11,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111878157] [2024-06-28 00:36:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:11,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111878157] [2024-06-28 00:36:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111878157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:17,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:36:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629231690] [2024-06-28 00:36:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:36:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:36:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:36:17,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:36:17,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 296 transitions, 4415 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:17,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:17,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:36:17,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:19,096 INFO L124 PetriNetUnfolderBase]: 2737/4503 cut-off events. [2024-06-28 00:36:19,096 INFO L125 PetriNetUnfolderBase]: For 627532/627532 co-relation queries the response was YES. [2024-06-28 00:36:19,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42632 conditions, 4503 events. 2737/4503 cut-off events. For 627532/627532 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27928 event pairs, 1008 based on Foata normal form. 1/4504 useless extension candidates. Maximal degree in co-relation 42513. Up to 4144 conditions per place. [2024-06-28 00:36:19,152 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 217 selfloop transitions, 93 changer transitions 0/315 dead transitions. [2024-06-28 00:36:19,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 315 transitions, 5083 flow [2024-06-28 00:36:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:36:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:36:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 00:36:19,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376940133037694 [2024-06-28 00:36:19,154 INFO L175 Difference]: Start difference. First operand has 319 places, 296 transitions, 4415 flow. Second operand 11 states and 170 transitions. [2024-06-28 00:36:19,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 315 transitions, 5083 flow [2024-06-28 00:36:20,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 315 transitions, 4926 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:36:20,622 INFO L231 Difference]: Finished difference. Result has 321 places, 296 transitions, 4457 flow [2024-06-28 00:36:20,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4258, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4457, PETRI_PLACES=321, PETRI_TRANSITIONS=296} [2024-06-28 00:36:20,623 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-28 00:36:20,623 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 296 transitions, 4457 flow [2024-06-28 00:36:20,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:20,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:20,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:20,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:36:20,624 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:20,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1844735012, now seen corresponding path program 4 times [2024-06-28 00:36:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:20,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753494531] [2024-06-28 00:36:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:20,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:26,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:26,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753494531] [2024-06-28 00:36:26,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753494531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:26,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:26,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:36:26,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282980414] [2024-06-28 00:36:26,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:26,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:36:26,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:36:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:36:26,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:36:26,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 296 transitions, 4457 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:26,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:26,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:36:26,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:29,213 INFO L124 PetriNetUnfolderBase]: 2865/4737 cut-off events. [2024-06-28 00:36:29,213 INFO L125 PetriNetUnfolderBase]: For 763494/763494 co-relation queries the response was YES. [2024-06-28 00:36:29,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44113 conditions, 4737 events. 2865/4737 cut-off events. For 763494/763494 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 29900 event pairs, 1022 based on Foata normal form. 36/4773 useless extension candidates. Maximal degree in co-relation 43993. Up to 3935 conditions per place. [2024-06-28 00:36:29,275 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 246 selfloop transitions, 75 changer transitions 11/337 dead transitions. [2024-06-28 00:36:29,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 337 transitions, 5467 flow [2024-06-28 00:36:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:36:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:36:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 211 transitions. [2024-06-28 00:36:29,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367595818815331 [2024-06-28 00:36:29,277 INFO L175 Difference]: Start difference. First operand has 321 places, 296 transitions, 4457 flow. Second operand 14 states and 211 transitions. [2024-06-28 00:36:29,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 337 transitions, 5467 flow [2024-06-28 00:36:30,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 337 transitions, 5170 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:36:30,751 INFO L231 Difference]: Finished difference. Result has 324 places, 294 transitions, 4330 flow [2024-06-28 00:36:30,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4330, PETRI_PLACES=324, PETRI_TRANSITIONS=294} [2024-06-28 00:36:30,751 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-28 00:36:30,751 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 294 transitions, 4330 flow [2024-06-28 00:36:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:30,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:30,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:36:30,752 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:30,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1016799394, now seen corresponding path program 5 times [2024-06-28 00:36:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:30,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918375620] [2024-06-28 00:36:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:30,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:37,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:37,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918375620] [2024-06-28 00:36:37,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918375620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:37,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:37,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:36:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166279296] [2024-06-28 00:36:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:37,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:36:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:36:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:36:37,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:36:37,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 294 transitions, 4330 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:37,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:37,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:36:37,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:38,847 INFO L124 PetriNetUnfolderBase]: 2708/4446 cut-off events. [2024-06-28 00:36:38,848 INFO L125 PetriNetUnfolderBase]: For 621871/621871 co-relation queries the response was YES. [2024-06-28 00:36:38,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41892 conditions, 4446 events. 2708/4446 cut-off events. For 621871/621871 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27472 event pairs, 1039 based on Foata normal form. 8/4454 useless extension candidates. Maximal degree in co-relation 41771. Up to 4198 conditions per place. [2024-06-28 00:36:38,905 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 280 selfloop transitions, 23 changer transitions 0/308 dead transitions. [2024-06-28 00:36:38,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 308 transitions, 5004 flow [2024-06-28 00:36:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:36:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:36:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:36:38,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33902439024390246 [2024-06-28 00:36:38,907 INFO L175 Difference]: Start difference. First operand has 324 places, 294 transitions, 4330 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:36:38,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 308 transitions, 5004 flow [2024-06-28 00:36:40,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 308 transitions, 4808 flow, removed 20 selfloop flow, removed 15 redundant places. [2024-06-28 00:36:40,509 INFO L231 Difference]: Finished difference. Result has 319 places, 294 transitions, 4187 flow [2024-06-28 00:36:40,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4134, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4187, PETRI_PLACES=319, PETRI_TRANSITIONS=294} [2024-06-28 00:36:40,509 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 00:36:40,509 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 294 transitions, 4187 flow [2024-06-28 00:36:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:40,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:40,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:40,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:36:40,510 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:40,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1917890202, now seen corresponding path program 6 times [2024-06-28 00:36:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:40,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262969360] [2024-06-28 00:36:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:45,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:45,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262969360] [2024-06-28 00:36:45,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262969360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:45,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:45,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:36:45,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147285669] [2024-06-28 00:36:45,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:45,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:36:45,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:36:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:36:45,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:36:45,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 294 transitions, 4187 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:45,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:45,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:36:45,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:47,919 INFO L124 PetriNetUnfolderBase]: 2743/4503 cut-off events. [2024-06-28 00:36:47,919 INFO L125 PetriNetUnfolderBase]: For 626023/626023 co-relation queries the response was YES. [2024-06-28 00:36:47,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41805 conditions, 4503 events. 2743/4503 cut-off events. For 626023/626023 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 27850 event pairs, 1023 based on Foata normal form. 8/4511 useless extension candidates. Maximal degree in co-relation 41685. Up to 3878 conditions per place. [2024-06-28 00:36:47,977 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 250 selfloop transitions, 71 changer transitions 0/326 dead transitions. [2024-06-28 00:36:47,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 326 transitions, 5027 flow [2024-06-28 00:36:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:36:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:36:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 203 transitions. [2024-06-28 00:36:47,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2024-06-28 00:36:47,979 INFO L175 Difference]: Start difference. First operand has 319 places, 294 transitions, 4187 flow. Second operand 14 states and 203 transitions. [2024-06-28 00:36:47,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 326 transitions, 5027 flow [2024-06-28 00:36:49,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 326 transitions, 4986 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:36:49,843 INFO L231 Difference]: Finished difference. Result has 326 places, 296 transitions, 4377 flow [2024-06-28 00:36:49,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4377, PETRI_PLACES=326, PETRI_TRANSITIONS=296} [2024-06-28 00:36:49,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-28 00:36:49,844 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 296 transitions, 4377 flow [2024-06-28 00:36:49,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:49,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:49,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:49,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:36:49,845 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:49,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash 649391770, now seen corresponding path program 7 times [2024-06-28 00:36:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588434523] [2024-06-28 00:36:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:55,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588434523] [2024-06-28 00:36:55,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588434523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:55,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:55,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:36:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683477176] [2024-06-28 00:36:55,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:55,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:36:55,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:55,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:36:55,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:36:55,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:36:55,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 296 transitions, 4377 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:55,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:55,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:36:55,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:57,720 INFO L124 PetriNetUnfolderBase]: 2763/4535 cut-off events. [2024-06-28 00:36:57,720 INFO L125 PetriNetUnfolderBase]: For 635980/635980 co-relation queries the response was YES. [2024-06-28 00:36:57,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42629 conditions, 4535 events. 2763/4535 cut-off events. For 635980/635980 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 28069 event pairs, 958 based on Foata normal form. 6/4539 useless extension candidates. Maximal degree in co-relation 42507. Up to 3527 conditions per place. [2024-06-28 00:36:57,781 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 244 selfloop transitions, 84 changer transitions 0/333 dead transitions. [2024-06-28 00:36:57,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 333 transitions, 5457 flow [2024-06-28 00:36:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:36:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:36:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 203 transitions. [2024-06-28 00:36:57,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2024-06-28 00:36:57,783 INFO L175 Difference]: Start difference. First operand has 326 places, 296 transitions, 4377 flow. Second operand 14 states and 203 transitions. [2024-06-28 00:36:57,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 333 transitions, 5457 flow [2024-06-28 00:36:59,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 333 transitions, 5301 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-28 00:36:59,653 INFO L231 Difference]: Finished difference. Result has 328 places, 299 transitions, 4501 flow [2024-06-28 00:36:59,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4225, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4501, PETRI_PLACES=328, PETRI_TRANSITIONS=299} [2024-06-28 00:36:59,654 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-28 00:36:59,654 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 299 transitions, 4501 flow [2024-06-28 00:36:59,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:59,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:59,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:59,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:36:59,655 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:59,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 643677850, now seen corresponding path program 8 times [2024-06-28 00:36:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751046178] [2024-06-28 00:36:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751046178] [2024-06-28 00:37:04,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751046178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:04,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:04,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:37:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818068198] [2024-06-28 00:37:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:37:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:37:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:37:04,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:37:04,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 299 transitions, 4501 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:04,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:04,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:37:04,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:07,285 INFO L124 PetriNetUnfolderBase]: 2750/4518 cut-off events. [2024-06-28 00:37:07,285 INFO L125 PetriNetUnfolderBase]: For 602469/602469 co-relation queries the response was YES. [2024-06-28 00:37:07,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42031 conditions, 4518 events. 2750/4518 cut-off events. For 602469/602469 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 27983 event pairs, 898 based on Foata normal form. 6/4520 useless extension candidates. Maximal degree in co-relation 41909. Up to 3521 conditions per place. [2024-06-28 00:37:07,345 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 243 selfloop transitions, 86 changer transitions 0/334 dead transitions. [2024-06-28 00:37:07,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 334 transitions, 5423 flow [2024-06-28 00:37:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:37:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:37:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 204 transitions. [2024-06-28 00:37:07,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3554006968641115 [2024-06-28 00:37:07,347 INFO L175 Difference]: Start difference. First operand has 328 places, 299 transitions, 4501 flow. Second operand 14 states and 204 transitions. [2024-06-28 00:37:07,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 334 transitions, 5423 flow [2024-06-28 00:37:09,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 334 transitions, 5292 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:37:09,179 INFO L231 Difference]: Finished difference. Result has 332 places, 299 transitions, 4546 flow [2024-06-28 00:37:09,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4546, PETRI_PLACES=332, PETRI_TRANSITIONS=299} [2024-06-28 00:37:09,180 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-28 00:37:09,180 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 299 transitions, 4546 flow [2024-06-28 00:37:09,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:09,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:09,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:37:09,182 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:09,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash 722548153, now seen corresponding path program 1 times [2024-06-28 00:37:09,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:09,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806657151] [2024-06-28 00:37:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:14,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806657151] [2024-06-28 00:37:14,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806657151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:14,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:14,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:37:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189296362] [2024-06-28 00:37:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:37:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:37:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:37:14,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:37:14,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 299 transitions, 4546 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:14,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:14,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:37:14,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:16,773 INFO L124 PetriNetUnfolderBase]: 2798/4606 cut-off events. [2024-06-28 00:37:16,774 INFO L125 PetriNetUnfolderBase]: For 661512/661512 co-relation queries the response was YES. [2024-06-28 00:37:16,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42642 conditions, 4606 events. 2798/4606 cut-off events. For 661512/661512 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 28799 event pairs, 965 based on Foata normal form. 18/4624 useless extension candidates. Maximal degree in co-relation 42519. Up to 4104 conditions per place. [2024-06-28 00:37:16,842 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 275 selfloop transitions, 30 changer transitions 15/325 dead transitions. [2024-06-28 00:37:16,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 325 transitions, 5387 flow [2024-06-28 00:37:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:37:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:37:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-28 00:37:16,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434959349593496 [2024-06-28 00:37:16,844 INFO L175 Difference]: Start difference. First operand has 332 places, 299 transitions, 4546 flow. Second operand 12 states and 169 transitions. [2024-06-28 00:37:16,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 325 transitions, 5387 flow [2024-06-28 00:37:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 325 transitions, 5223 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:37:18,662 INFO L231 Difference]: Finished difference. Result has 332 places, 290 transitions, 4359 flow [2024-06-28 00:37:18,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4359, PETRI_PLACES=332, PETRI_TRANSITIONS=290} [2024-06-28 00:37:18,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-28 00:37:18,663 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 290 transitions, 4359 flow [2024-06-28 00:37:18,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:18,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:18,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:37:18,664 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:18,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 760362117, now seen corresponding path program 1 times [2024-06-28 00:37:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:18,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962141084] [2024-06-28 00:37:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:26,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:26,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962141084] [2024-06-28 00:37:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962141084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:26,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:37:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015218382] [2024-06-28 00:37:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:37:26,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:26,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:37:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:37:26,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:37:26,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 290 transitions, 4359 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:26,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:26,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:37:26,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:28,164 INFO L124 PetriNetUnfolderBase]: 2682/4343 cut-off events. [2024-06-28 00:37:28,164 INFO L125 PetriNetUnfolderBase]: For 620951/620951 co-relation queries the response was YES. [2024-06-28 00:37:28,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40749 conditions, 4343 events. 2682/4343 cut-off events. For 620951/620951 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 26513 event pairs, 908 based on Foata normal form. 6/4340 useless extension candidates. Maximal degree in co-relation 40626. Up to 3910 conditions per place. [2024-06-28 00:37:28,220 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 269 selfloop transitions, 33 changer transitions 15/322 dead transitions. [2024-06-28 00:37:28,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 322 transitions, 5299 flow [2024-06-28 00:37:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:37:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:37:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:37:28,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:37:28,222 INFO L175 Difference]: Start difference. First operand has 332 places, 290 transitions, 4359 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:37:28,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 322 transitions, 5299 flow [2024-06-28 00:37:29,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 322 transitions, 5079 flow, removed 7 selfloop flow, removed 19 redundant places. [2024-06-28 00:37:29,697 INFO L231 Difference]: Finished difference. Result has 317 places, 285 transitions, 4144 flow [2024-06-28 00:37:29,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4141, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4144, PETRI_PLACES=317, PETRI_TRANSITIONS=285} [2024-06-28 00:37:29,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 00:37:29,697 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 285 transitions, 4144 flow [2024-06-28 00:37:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:29,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:29,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:37:29,698 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:29,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash 151068707, now seen corresponding path program 2 times [2024-06-28 00:37:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979974476] [2024-06-28 00:37:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979974476] [2024-06-28 00:37:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979974476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:37:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331815513] [2024-06-28 00:37:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:37:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:37:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:37:37,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:37:37,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 285 transitions, 4144 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:37,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:37,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:37:37,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:39,629 INFO L124 PetriNetUnfolderBase]: 2579/4171 cut-off events. [2024-06-28 00:37:39,630 INFO L125 PetriNetUnfolderBase]: For 582937/582937 co-relation queries the response was YES. [2024-06-28 00:37:39,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38884 conditions, 4171 events. 2579/4171 cut-off events. For 582937/582937 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 25199 event pairs, 900 based on Foata normal form. 6/4175 useless extension candidates. Maximal degree in co-relation 38763. Up to 3952 conditions per place. [2024-06-28 00:37:39,686 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 262 selfloop transitions, 23 changer transitions 18/308 dead transitions. [2024-06-28 00:37:39,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 308 transitions, 4826 flow [2024-06-28 00:37:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:37:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:37:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:37:39,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36097560975609755 [2024-06-28 00:37:39,688 INFO L175 Difference]: Start difference. First operand has 317 places, 285 transitions, 4144 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:37:39,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 308 transitions, 4826 flow [2024-06-28 00:37:41,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 308 transitions, 4696 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 00:37:41,077 INFO L231 Difference]: Finished difference. Result has 307 places, 278 transitions, 3979 flow [2024-06-28 00:37:41,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4014, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3979, PETRI_PLACES=307, PETRI_TRANSITIONS=278} [2024-06-28 00:37:41,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 00:37:41,077 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 278 transitions, 3979 flow [2024-06-28 00:37:41,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:41,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:41,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:41,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:37:41,097 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:41,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1968622177, now seen corresponding path program 1 times [2024-06-28 00:37:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784501356] [2024-06-28 00:37:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:41,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:47,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:47,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784501356] [2024-06-28 00:37:47,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784501356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:47,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:47,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:37:47,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885014639] [2024-06-28 00:37:47,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:47,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:37:47,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:37:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:37:47,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:37:47,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 278 transitions, 3979 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:47,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:47,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:37:47,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:50,026 INFO L124 PetriNetUnfolderBase]: 2754/4470 cut-off events. [2024-06-28 00:37:50,026 INFO L125 PetriNetUnfolderBase]: For 689070/689070 co-relation queries the response was YES. [2024-06-28 00:37:50,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43336 conditions, 4470 events. 2754/4470 cut-off events. For 689070/689070 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 27326 event pairs, 542 based on Foata normal form. 6/4476 useless extension candidates. Maximal degree in co-relation 43218. Up to 3208 conditions per place. [2024-06-28 00:37:50,081 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 275 selfloop transitions, 55 changer transitions 0/335 dead transitions. [2024-06-28 00:37:50,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 335 transitions, 5531 flow [2024-06-28 00:37:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:37:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:37:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 215 transitions. [2024-06-28 00:37:50,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37456445993031356 [2024-06-28 00:37:50,083 INFO L175 Difference]: Start difference. First operand has 307 places, 278 transitions, 3979 flow. Second operand 14 states and 215 transitions. [2024-06-28 00:37:50,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 335 transitions, 5531 flow [2024-06-28 00:37:51,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 335 transitions, 5389 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 00:37:51,275 INFO L231 Difference]: Finished difference. Result has 303 places, 279 transitions, 4013 flow [2024-06-28 00:37:51,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4013, PETRI_PLACES=303, PETRI_TRANSITIONS=279} [2024-06-28 00:37:51,276 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-28 00:37:51,276 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 279 transitions, 4013 flow [2024-06-28 00:37:51,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:51,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:51,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:51,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:37:51,277 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:51,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1960290307, now seen corresponding path program 2 times [2024-06-28 00:37:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008674348] [2024-06-28 00:37:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:57,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008674348] [2024-06-28 00:37:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008674348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:57,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:37:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122142688] [2024-06-28 00:37:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:37:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:37:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:37:57,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:37:57,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 279 transitions, 4013 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:57,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:57,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:37:57,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:59,335 INFO L124 PetriNetUnfolderBase]: 2888/4714 cut-off events. [2024-06-28 00:37:59,336 INFO L125 PetriNetUnfolderBase]: For 762915/762915 co-relation queries the response was YES. [2024-06-28 00:37:59,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46878 conditions, 4714 events. 2888/4714 cut-off events. For 762915/762915 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 29363 event pairs, 537 based on Foata normal form. 6/4720 useless extension candidates. Maximal degree in co-relation 46762. Up to 3208 conditions per place. [2024-06-28 00:37:59,399 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 282 selfloop transitions, 38 changer transitions 0/325 dead transitions. [2024-06-28 00:37:59,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 325 transitions, 5539 flow [2024-06-28 00:37:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:37:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:37:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 00:37:59,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2024-06-28 00:37:59,401 INFO L175 Difference]: Start difference. First operand has 303 places, 279 transitions, 4013 flow. Second operand 11 states and 179 transitions. [2024-06-28 00:37:59,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 325 transitions, 5539 flow [2024-06-28 00:38:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 325 transitions, 5404 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 00:38:00,805 INFO L231 Difference]: Finished difference. Result has 304 places, 280 transitions, 4006 flow [2024-06-28 00:38:00,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3878, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4006, PETRI_PLACES=304, PETRI_TRANSITIONS=280} [2024-06-28 00:38:00,805 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 00:38:00,805 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 280 transitions, 4006 flow [2024-06-28 00:38:00,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:00,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:00,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:00,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:38:00,806 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:00,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2138703435, now seen corresponding path program 3 times [2024-06-28 00:38:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:00,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371120779] [2024-06-28 00:38:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:00,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:07,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:07,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371120779] [2024-06-28 00:38:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371120779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:07,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:07,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:38:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375405049] [2024-06-28 00:38:07,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:07,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:38:07,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:38:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:38:08,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:38:08,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 280 transitions, 4006 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:08,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:08,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:38:08,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:10,067 INFO L124 PetriNetUnfolderBase]: 2875/4685 cut-off events. [2024-06-28 00:38:10,068 INFO L125 PetriNetUnfolderBase]: For 767698/767698 co-relation queries the response was YES. [2024-06-28 00:38:10,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46281 conditions, 4685 events. 2875/4685 cut-off events. For 767698/767698 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 29053 event pairs, 613 based on Foata normal form. 6/4691 useless extension candidates. Maximal degree in co-relation 46164. Up to 3208 conditions per place. [2024-06-28 00:38:10,121 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 276 selfloop transitions, 41 changer transitions 0/322 dead transitions. [2024-06-28 00:38:10,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 322 transitions, 5302 flow [2024-06-28 00:38:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:38:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:38:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 00:38:10,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38802660753880264 [2024-06-28 00:38:10,123 INFO L175 Difference]: Start difference. First operand has 304 places, 280 transitions, 4006 flow. Second operand 11 states and 175 transitions. [2024-06-28 00:38:10,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 322 transitions, 5302 flow [2024-06-28 00:38:11,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 322 transitions, 5186 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:38:11,322 INFO L231 Difference]: Finished difference. Result has 306 places, 281 transitions, 4026 flow [2024-06-28 00:38:11,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4026, PETRI_PLACES=306, PETRI_TRANSITIONS=281} [2024-06-28 00:38:11,322 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 00:38:11,323 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 281 transitions, 4026 flow [2024-06-28 00:38:11,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:11,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:11,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:11,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:38:11,323 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:11,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash -641102213, now seen corresponding path program 4 times [2024-06-28 00:38:11,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:11,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242083090] [2024-06-28 00:38:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242083090] [2024-06-28 00:38:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242083090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:15,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:15,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:38:15,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261970323] [2024-06-28 00:38:15,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:15,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:38:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:38:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:38:15,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:38:15,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 281 transitions, 4026 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:15,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:15,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:38:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:17,510 INFO L124 PetriNetUnfolderBase]: 3153/5191 cut-off events. [2024-06-28 00:38:17,510 INFO L125 PetriNetUnfolderBase]: For 997037/997037 co-relation queries the response was YES. [2024-06-28 00:38:17,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52654 conditions, 5191 events. 3153/5191 cut-off events. For 997037/997037 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 33477 event pairs, 1055 based on Foata normal form. 24/5215 useless extension candidates. Maximal degree in co-relation 52536. Up to 3280 conditions per place. [2024-06-28 00:38:17,582 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 201 selfloop transitions, 112 changer transitions 7/325 dead transitions. [2024-06-28 00:38:17,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 325 transitions, 5552 flow [2024-06-28 00:38:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:38:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:38:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 00:38:17,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:38:17,584 INFO L175 Difference]: Start difference. First operand has 306 places, 281 transitions, 4026 flow. Second operand 12 states and 195 transitions. [2024-06-28 00:38:17,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 325 transitions, 5552 flow [2024-06-28 00:38:19,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 325 transitions, 5431 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:38:19,362 INFO L231 Difference]: Finished difference. Result has 310 places, 276 transitions, 4085 flow [2024-06-28 00:38:19,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4085, PETRI_PLACES=310, PETRI_TRANSITIONS=276} [2024-06-28 00:38:19,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 00:38:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 276 transitions, 4085 flow [2024-06-28 00:38:19,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:19,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:19,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:19,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:38:19,363 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:19,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:19,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1985308327, now seen corresponding path program 3 times [2024-06-28 00:38:19,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299545559] [2024-06-28 00:38:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299545559] [2024-06-28 00:38:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299545559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:38:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943393166] [2024-06-28 00:38:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:38:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:38:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:38:24,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:38:24,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 276 transitions, 4085 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:24,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:24,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:38:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:26,406 INFO L124 PetriNetUnfolderBase]: 2988/4902 cut-off events. [2024-06-28 00:38:26,406 INFO L125 PetriNetUnfolderBase]: For 875663/875663 co-relation queries the response was YES. [2024-06-28 00:38:26,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49234 conditions, 4902 events. 2988/4902 cut-off events. For 875663/875663 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 31258 event pairs, 842 based on Foata normal form. 6/4908 useless extension candidates. Maximal degree in co-relation 49115. Up to 2932 conditions per place. [2024-06-28 00:38:26,475 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 177 selfloop transitions, 119 changer transitions 9/310 dead transitions. [2024-06-28 00:38:26,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 310 transitions, 5233 flow [2024-06-28 00:38:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:38:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:38:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 00:38:26,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968957871396896 [2024-06-28 00:38:26,477 INFO L175 Difference]: Start difference. First operand has 310 places, 276 transitions, 4085 flow. Second operand 11 states and 179 transitions. [2024-06-28 00:38:26,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 310 transitions, 5233 flow [2024-06-28 00:38:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 310 transitions, 4987 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 00:38:28,313 INFO L231 Difference]: Finished difference. Result has 308 places, 271 transitions, 4036 flow [2024-06-28 00:38:28,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4036, PETRI_PLACES=308, PETRI_TRANSITIONS=271} [2024-06-28 00:38:28,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 00:38:28,314 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 271 transitions, 4036 flow [2024-06-28 00:38:28,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:28,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:28,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:28,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:38:28,315 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:28,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -373721415, now seen corresponding path program 5 times [2024-06-28 00:38:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542228406] [2024-06-28 00:38:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542228406] [2024-06-28 00:38:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542228406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:34,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:38:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55083248] [2024-06-28 00:38:34,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:38:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:38:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:38:34,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:38:34,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 271 transitions, 4036 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:34,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:34,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:38:34,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:37,094 INFO L124 PetriNetUnfolderBase]: 2803/4583 cut-off events. [2024-06-28 00:38:37,094 INFO L125 PetriNetUnfolderBase]: For 784121/784121 co-relation queries the response was YES. [2024-06-28 00:38:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46501 conditions, 4583 events. 2803/4583 cut-off events. For 784121/784121 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28509 event pairs, 564 based on Foata normal form. 6/4589 useless extension candidates. Maximal degree in co-relation 46383. Up to 3664 conditions per place. [2024-06-28 00:38:37,149 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 267 selfloop transitions, 42 changer transitions 0/314 dead transitions. [2024-06-28 00:38:37,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 314 transitions, 5320 flow [2024-06-28 00:38:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:38:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:38:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 192 transitions. [2024-06-28 00:38:37,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602251407129456 [2024-06-28 00:38:37,151 INFO L175 Difference]: Start difference. First operand has 308 places, 271 transitions, 4036 flow. Second operand 13 states and 192 transitions. [2024-06-28 00:38:37,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 314 transitions, 5320 flow [2024-06-28 00:38:38,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 314 transitions, 5060 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 00:38:38,601 INFO L231 Difference]: Finished difference. Result has 304 places, 272 transitions, 3928 flow [2024-06-28 00:38:38,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3928, PETRI_PLACES=304, PETRI_TRANSITIONS=272} [2024-06-28 00:38:38,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 00:38:38,602 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 272 transitions, 3928 flow [2024-06-28 00:38:38,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:38,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:38,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:38,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:38:38,602 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:38,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -679223733, now seen corresponding path program 6 times [2024-06-28 00:38:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66292746] [2024-06-28 00:38:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66292746] [2024-06-28 00:38:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66292746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:44,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:44,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:38:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422569545] [2024-06-28 00:38:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:38:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:44,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:38:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:38:44,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:38:44,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 272 transitions, 3928 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:44,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:44,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:38:44,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:46,906 INFO L124 PetriNetUnfolderBase]: 2790/4560 cut-off events. [2024-06-28 00:38:46,906 INFO L125 PetriNetUnfolderBase]: For 728354/728354 co-relation queries the response was YES. [2024-06-28 00:38:46,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44942 conditions, 4560 events. 2790/4560 cut-off events. For 728354/728354 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 28187 event pairs, 578 based on Foata normal form. 6/4566 useless extension candidates. Maximal degree in co-relation 44826. Up to 3664 conditions per place. [2024-06-28 00:38:46,967 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 264 selfloop transitions, 42 changer transitions 0/311 dead transitions. [2024-06-28 00:38:46,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 311 transitions, 4982 flow [2024-06-28 00:38:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:38:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:38:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 00:38:46,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-28 00:38:46,969 INFO L175 Difference]: Start difference. First operand has 304 places, 272 transitions, 3928 flow. Second operand 12 states and 180 transitions. [2024-06-28 00:38:46,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 311 transitions, 4982 flow [2024-06-28 00:38:48,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 311 transitions, 4858 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 00:38:48,213 INFO L231 Difference]: Finished difference. Result has 306 places, 273 transitions, 3942 flow [2024-06-28 00:38:48,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3942, PETRI_PLACES=306, PETRI_TRANSITIONS=273} [2024-06-28 00:38:48,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 00:38:48,214 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 273 transitions, 3942 flow [2024-06-28 00:38:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:48,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:48,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:48,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:38:48,215 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:48,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash -990549469, now seen corresponding path program 4 times [2024-06-28 00:38:48,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:48,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058529507] [2024-06-28 00:38:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:48,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058529507] [2024-06-28 00:38:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058529507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:54,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:38:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674700959] [2024-06-28 00:38:54,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:54,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:38:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:38:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:38:54,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:38:54,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 273 transitions, 3942 flow. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:54,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:54,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:38:54,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:56,184 INFO L124 PetriNetUnfolderBase]: 2777/4547 cut-off events. [2024-06-28 00:38:56,184 INFO L125 PetriNetUnfolderBase]: For 725552/725552 co-relation queries the response was YES. [2024-06-28 00:38:56,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44437 conditions, 4547 events. 2777/4547 cut-off events. For 725552/725552 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 28446 event pairs, 713 based on Foata normal form. 6/4553 useless extension candidates. Maximal degree in co-relation 44320. Up to 4162 conditions per place. [2024-06-28 00:38:56,240 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 256 selfloop transitions, 36 changer transitions 0/297 dead transitions. [2024-06-28 00:38:56,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 297 transitions, 4604 flow [2024-06-28 00:38:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:38:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:38:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 00:38:56,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36341463414634145 [2024-06-28 00:38:56,241 INFO L175 Difference]: Start difference. First operand has 306 places, 273 transitions, 3942 flow. Second operand 10 states and 149 transitions. [2024-06-28 00:38:56,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 297 transitions, 4604 flow [2024-06-28 00:38:57,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 297 transitions, 4477 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:38:57,478 INFO L231 Difference]: Finished difference. Result has 307 places, 273 transitions, 3892 flow [2024-06-28 00:38:57,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3892, PETRI_PLACES=307, PETRI_TRANSITIONS=273} [2024-06-28 00:38:57,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 00:38:57,479 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 273 transitions, 3892 flow [2024-06-28 00:38:57,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:57,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:57,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:57,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:38:57,479 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:57,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash 685793215, now seen corresponding path program 5 times [2024-06-28 00:38:57,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:57,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954822343] [2024-06-28 00:38:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:57,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:02,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954822343] [2024-06-28 00:39:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954822343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:02,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:02,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:39:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529715178] [2024-06-28 00:39:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:39:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:39:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:39:02,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:39:02,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 273 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:02,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:02,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:39:02,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:03,976 INFO L124 PetriNetUnfolderBase]: 2797/4561 cut-off events. [2024-06-28 00:39:03,989 INFO L125 PetriNetUnfolderBase]: For 736560/736560 co-relation queries the response was YES. [2024-06-28 00:39:04,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44538 conditions, 4561 events. 2797/4561 cut-off events. For 736560/736560 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 28421 event pairs, 1049 based on Foata normal form. 6/4557 useless extension candidates. Maximal degree in co-relation 44420. Up to 3675 conditions per place. [2024-06-28 00:39:04,040 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 202 selfloop transitions, 96 changer transitions 0/303 dead transitions. [2024-06-28 00:39:04,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 303 transitions, 4987 flow [2024-06-28 00:39:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:39:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:39:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 00:39:04,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 00:39:04,042 INFO L175 Difference]: Start difference. First operand has 307 places, 273 transitions, 3892 flow. Second operand 12 states and 189 transitions. [2024-06-28 00:39:04,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 303 transitions, 4987 flow [2024-06-28 00:39:05,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 303 transitions, 4906 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:39:05,342 INFO L231 Difference]: Finished difference. Result has 309 places, 274 transitions, 4043 flow [2024-06-28 00:39:05,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4043, PETRI_PLACES=309, PETRI_TRANSITIONS=274} [2024-06-28 00:39:05,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-28 00:39:05,343 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 274 transitions, 4043 flow [2024-06-28 00:39:05,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:05,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:05,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:39:05,343 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:05,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1314613833, now seen corresponding path program 6 times [2024-06-28 00:39:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:05,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814683221] [2024-06-28 00:39:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15